Publications                         

 

Research Papers                                     : 80

Review Articles                                         : 10

Papers in International Conferences  : 37

                                                                                     

 

Impact of Publications           

 

Citations ~ 2400 (research papers) + 250 (reviews)

h-index: 25     ;   m-index : 1.1

Highly Cited (> 100) Publications: 5

    

 

 

 

Contributions

1. field-induced transition from power-law to exponential-law at the critical regime of 
metal-insulator transition, and facial tuning of the critical regime by pressure and
magnetic field in conducting polymers.  (Phy. Rev. B, 47, 1758, 1993 ; Phy. Rev. B, 48, 17685, 1993 ; Synth. Metals,
65, 167, 1994)

2. very low percolation threshold in fractal-networks of conducting polymer nanocomposites. 

   (Phy. Rev. B, 50, 13931, 1994 ; Macromolecules, 26, 7245, 1993)

3. anisotropic magnetoconductance due to the  interplay of weak localization and electron-electron interaction in low-dimensional systems. (Phy. Rev. B, 49, 16162, 1994 ;
Phy. Rev. B,
53, 15529, 1996 ; Phy. Rev. B, 76, 235432, 2007)

4. direct determination of mobility, carrier density and relaxation time in conducting   
 polymers by terahertz-time domain spectroscopy. (Appl. Phys. Lett.,
77, 2452,  2000 ;  
 Appl. Phys. Lett.,
79,  4142,  2001)

 

 

Intrinsic metallic nature in conducting polymers

Although doped polyacetylene [PA, conductivity ~ 1000 S/cm], polyaniline (PANI) and polypyrrole (PPy) [conductivity ~ 100 S/cm] have been investigated during the 1980’s, hardly any positive temperature coefficient of resistivity (TCR) was observed. Our early 90’s work on a new type of PANI has helped to resolve the role of disorder in charge transport, and the subsequent work on PPy could reveal the positive TCR in these systems. Furthermore, the facile tuning of the critical regime to metallic and insulating regimes by pressure and magnetic field has been shown in several conducting polymers. The novel electrochemically gated transistor studies could show the evolution of the density of states and conductivity in conducting polymers. Recently (Nature Mat. 8, 572, 2009) the Luttinger liquid scenario has been demonstrated in a semiconducting polymer.

 

Percolation in  fractal networks               

The classical percolation problem has been studied for several years, and the observed percolation threshold is ~ 16 % volume fraction; however, this value is expected to be lowered as the aspect ratio of the conducting particle increases. Nevertheless rarely the percolation threshold is observed below 1 %. In our work on interpenetrating fractal networks of PANI in insulating polymer matrix, percolation thresholds as low as 0.1 % was observed, with a large conductivity (~ 1 mS/cm). This has opened up new frontiers on conducting polymer nanocomposites.

 

Anisotropic charge transport in highly oriented conducting polymers

The intra versus inter chain charge transport properties, in aligned conducting polymers like polyacetylene and poly-p-phenylenevinylene (PPV), are quite significant to probe the anisotropic features. These studies have shown that the transverse versus longitudinal magnetotransport can determine the nanoscopic scale charge transport parameters. How the quantum effects, due to the interplay of weak localization and electron-electron interactions, contribute to the anisotropic magnetoconductance have been revealed from these studies. Furthermore, determining the temperature dependence of inelastic scattering length is of considerable importance to identify the charge carrier scattering mechanisms.

 

Poly(3,4- ethylenedioxythiophene)-polystyrenesulfonic acid (PEDOT-PSS)

In the initial years of polymer light emitting diodes (LED), the indium-tin oxide (ITO) –semiconducting polymer interface was causing severe stability problems. Our pioneering work on covering the ITO surface by spin coating the aqueous based PEDOT-PSS, and then the semiconducting polymer on top of the PEDOT-PSS layer has significantly enhanced the life-time of polymer LEDs and other polymer devices. This work has received over 250 citations. Since PEDOT-PSS being a complex system, the nanomorphology determines the electrical properties. Recently this aspect has been thoroughly investigated, and shown that grain size play a major role in the charge transport properties. This work is published as an IOP-Select paper.            

            

Metallic state in disordered quasi-one-dimensional conductors

The metallic state in conducting polymers and single-walled carbon nanotubes is studied by dielectric spectroscopy (8-600 GHz). An intriguing correlation between scattering time (t ) and plasma frequency (wp): t µ wp-1.3 has been observed. Based on the observed parallels with doped semiconductors, the interchain coupling t^, plays a role comparable to the doping level, and that the unusual free-carrier dynamics in the metallic state can be explained by including the role of t^ in the conventional models. In polymers and nanotubes, the competition between interchain charge transfer and localization onto 1D chains plays a role comparable to that of doping level. The empirical correlation between t and wp for both conducting polymers and doped semiconductors is an important result of this work. Also, the phase-sensitive sub-THz data have assisted to resolve the discrepancies in Kramers-Kronig analysis in earlier studies.

 

THz-time domain sepectroscopy

Especially, in the case of conducting polymers, charge carrier dynamics is dominated by the contributions at low energies, which can be probed only by THz complex dielectric spectroscopy. Analysis of the complex conductance data in the THz frequency range directly gives the carrier mobility, density and relaxation time. For metallic conducting polymers the Drude model is quite appropriate, and for insulating systems the localization-modified Drude model is used. The low-energy carrier dynamics is determined by the combination of coherent and incoherent transport channels between conjugated chain segments. However, the interplay between electronic correlations and interchain charge transfer is found to play a major role.

 

Charge transport in carbon nanotubes

Charge transport in a novel form of transparent single-wall carbon nanotubes (SWNT) shows that the localization-delocalization transition is quite sensitive to the intertube transport. Hopping transport dominates in transparent SWNT network. The transparency of this network can be tuned in a gated device by controlling the doping level. Since transparent SWNT has strong potential for applications in flexible organic / polymer electronic devices, a comparative investigation on the charge transport properties with respect to other transparent electrodes like PEDOT-PSS and conventional ITO indicates that the nanomorphology of SWNT network should improve for optimizing the charge transport properties. In bulk SWNTs, both weak localization and electron-electron interactions are found to play significant role in the low temperature transport. The temperature dependence of inelastic scattering length indicates non-Fermi liquid behavior, especially in case of aligned SWNTs.    

 

 

 

 

Top Ten Cited Papers

 

1. Polymer light emitting diodes with polyethylene dioxythiophene polystyrene

sulfonate as the transparent anode: 

Y. Cao, G. Yu, C. Zhang, Reghu Menon, and A.J. Heeger, Synth. Met., V 87, 171, (1997).  Citations: 270

 

2. Counterion-induced precessibility of polyaniline: Transport at the metal-

Insulator boundary:

     Reghu Menon, Y. Cao, D. Moses and A.J. Heeger, Phys. Rev.B, V 47, 1758 (1993).     
     Citations: 210

 

3. Transport near the metal-insulator transition: Polypyrrole doped with PF6:

    C.O. Yoon, Reghu Menon, D. Moses and A.J. Heeger, Phys. Rev.B, V 49, 10851,

    (1994).  Citations: 147

4. Transport in polyaniline networks near the percolation threshold:

      Reghu Menon, C.O. Yoon, C.Y. Yang, Y. Cao, D. Moses and A.J. Heeger, Phys. 
      Rev.B
,  V 50, 13931, (1994).  Citations : 110

 

5. Reflectance of conducting polypyrrole: Obeservation of the metal-insulator

     transition driven by disorder:

     Kwanghee Lee, Reghu Menon, C.O. Yoon and A.J. Heeger, Phys. Rev. B, V 52,
     4779, (1995).  Citations :  83

 

6. Transport in polyaniline near the critical regime of the metal-insulator

     transition:

    Reghu Menon, C.O.Yoon, D. Moses, A.J. Heeger and Y. Cao, Phys. Rev.B, V 48

    17685 (1993).  Citations :  81

 

7. Electrical transport in conducting polymer blends of polyaniline in poly-methyl

    methacrylate:

    C.O. Yoon, Reghu Menon, D. Moses, A.J. Heeger and Y. Cao, Synth. Met., V 63, 
    47, (1994).  Citations:  74

 

8. Hopping transport in doped conducting polymers in the insulating regime near   
    the metal-insulator boundary: polypyrrole, polyaniline and polyalkylthiophenes

    C.O. Yoon, Reghu Menon, D.Moses, A.J. Heeger, Y. Cao, T.A. Chen, X. Wu, R.D. 
     Rieke, Synth. Met., V 75, 229, (1995).  Citations:  69

 

9. Superlocalization of the electronic wave function in conductive polymer blends

      at concentrations near the percolation threshold:

     Reghu Menon, C.O.Yoon, D. Moses, A.J. Heeger and Y. Cao, Macromolecules, V

     26, 7245, (1993).  Citations:  64

 

10. Electronic transport in doped poly(3,4-ethylenedioxythiophene) near the metal

insulator transtion:

      A.N. Aleshin, R. Kiebooms, Reghu Menon and A.J. Heeger, Synth. Met., V 90, 61,    
     (1997).
Citations:  55

 

 

 

 

 

 

 

 

List of publications:

 

 

 

 

1. Charge transport in functionalized multi-wall carbon nanotube-Nafion composite

    C.S.S. Sangeeth, R. Kannan, V.K. Pillai and Reghu Menon

 

2. High emission currents and low threshold fields in multi-wall carbon nanotube-polymer
    composites in the vertical configuration

    Sameera,. R. Bhatia, Prasad V and Reghu Menon, J App Phy., 109, 044307 (2012)

 

3. Carrier density dependent transport in doped poly-3-methylthiophene:
    from injection-limited to space-charge limited current

    P. Anjaneyulu, C.S.S. Sangeeth, and Reghu Menon

    J. Phys D – App. Phys, 44, 315101 (2011)

 

4. Theshold-like features in the magnetic response of iron filled multi-walled carbon 
    nanotube and polymer composite

    R. Bhatia, Sameera,. Prasad V and Reghu Menon

    J. Phys D – App. Phys, 43, 415001 (2011)

 

5. Correlated conformation and charge transport in multiwall carbon nanotube-PEDOT-
    PSS composites

    Choudhury PK, Ramesh, Ramaprabhu and  Menon R , J. of Phys: Cond. Matt.,

     V 23, 265303 (2011).

 

6. Preparation and characterization of multiwall carbon nanotube / polypyrrole coaxial  
    fibrils
  R. Bhatia, C.S.S. Sangeeth, Prasad V and Reghu Menon

    Physica B, V 406 1727 (2010)

 

7. Probing the inter-tube transport in aligned and random mutilwall-carbon nanotubes

    R. Bhatia R, V. Prasad V and  Reghu Menon   

    J App Phy., 109, 053713 (2011)

 

8. Modifed conformation and physical properties in conducting polymers due to varying    
    conjugation and solvent interactions

    P.K. Choudhury, D. Bagchi, C.S.S. Sangeeth and Reghu Menon

    J. Mater. Chem, 21, 1607 (2011).

 

9. Characterization, electrical percolation and magnetization studies of  
    polystyrene/multiwall carbon nanotube composite films

    R. Bhatia R, V. Prasad V and 
Reghu Menon   

    Mat. Sci. & Eng. B, 175, 189 (2010)

 

10. Interfaces and traps in pentacene field-effect transistor

     C.S.S. Sangeeth, P. Stadler, S. Schaur, N.S. Sariciftici and Reghu Menon

     J. App. Phys.  108, 113703 (2010)

 

11. Nonlinear transport in hybrid polypyrrole-gold nanostructures
      D. Mtsuko, M.A. Ahlskog and
Reghu Menon   

      J Nanosci & Nanotech., 10, 8185 (2010).

 

12. Negative differential resistance in doped poly(3-methylthiophene) devices
      P. Anjaneyulu, C.S.S. Sangeeth, and
Reghu Menon
      J. Phys D – App. Phys, 43, 425103 (2010)

 

13. Unusual metallic-like transport near the percolation threshold
      R. Bhatia, C.S.S. Sangeeth, V. Prasad V and
Reghu Menon
      App Phys. Lett, 96, 242113 (2010)

 

14. Charge transport properties of water dispersible multiwall carbon nanotube-polyaniline   
      composites

     
C.S.S. Sangeeth, P. Jimenez, A.M. Benito, W.K. Maser and Reghu Menon
      J App Phy.   V 107, 103719 (2010)

 

 15. Space-charge limited conduction in doped polypyrrole devices
      
P. Anjaneyulu P, C.S.S. Sangeeth  and Reghu Menon
       J App Phy.   V 107, 093716 (2010)

 

16. Nonlinear transport in semiconducting polymers at high carrier densities
      
J. D. Yuen, Reghu Menon, N. E. Coates, E. B. Namdas, S. Cho, S. T. Hannahs, D.
       Moses, A. J. Heeger, Nature Materials  V 8, No.7, p:
572-575, (2009).

 

17. Electroconductance in single-wall carbon nanotubes

     Manu Jaiswal, C.S. Suchand Sangeeth and Reghu Menon. App. Phys. Lett, 95, 032111
     (2009). 

 

18. Photo-impedance characterization of polymer field-effect transistor

      C.S. Suchand Sangeeth, Manu Jaiswal and Reghu Menon , App. Phys. Lett, 95, 093308   
      (2009).

 

 19. p-conjugation and conformation in a semiconducting polymer: small angle x-ray  
      scattering study

      Paramita Kar Choudhury, Debjani Bagchi, and Reghu Menon, J. Phys: Cond. Matt.,
V 21,195801, (2009).

 

 

 

 

20.  Charge transport in transparent conductors: a comparison

      C.S. Suchand Sangeeth, Manu Jaiswal and Reghu Menon , J. App. Phys., V 105, 063713,  
      (2009).

 

21.  Field-effect and frequency dependent transport in semiconductor-enriched single-wall  
      carbon nanotube network device

      Manu Jaiswal, C.S. Suchand Sangeeth, Wei Wang, Ya-Ping Sun and  Reghu Menon, 
      
J.  Nanoscience and Nanotech. V 9, 9533, (2009).

 

22. Correlation of morphology and charge transport in poly(3,4-ethylenedioxythiophene)-
      polystyrenesulfonic acid (PEDOT-PSS) films

      C.S.S.Sangeeth. M. Jaiswal and  R. Menon,  J. Phys: Cond. Matt., V 21, 072101, (2009).

23. H1-NMR and charge transport in metallic polypyrrole at ultra-low temperatures and 
       high magnetic fields

      K.J. Singh, W.G. Clark, K.P. Ramesh and R. Menon, J. Phys: Cond. Matt., V 20, 465208,
       (2008).

 

24. Electrochemical deposition of polypyrrole nanolayers on discontinous ultrathin gold
     films

     Mtsuko D , Avnon A , Lievonen J , Ahlskog M and Menon R

     Nanotechnology, V 19, 125304, (2008).

 

25. Probing the aging effect in metallic polypyrrole by terahertz time-domain spectroscopy

      T.I. Jeon, J.H. Son and R. Menon , J. Appl. Phys. V 101, 093713, (2007).

 

26. Magnetotransport in transparent single-wall carbon-nanotube networks

     Jaiswal M, Wang W, Fernando K.A.S, Sun Y-P and Menon R, Phys. Rev. B V 76, 113401,  
     (2007).

 

27.  Magnetoconductance in single-wall carbon nanotubes: electron-electron interaction  
      and  weak localization contributions

     Paramita K Choudhury, M. Jaiswal and Menon R, Phys. Rev. B V 76, 235432, (2007).

 

28. Charge transport in transparent single-wall carbon nanotube networks

      Jaiswal M, Wang W, Fernando K.A.S, Sun YP and Menon R, J. of Phy: Cond. Mat., V 19,  
      446006, (2007).

29. Ion-induced multiply reentrant liquid-liquid transitions and the nature of criticality in 
     ethanol-water mixture

     Debjani Bagchi  Anil Kumar and Reghu Menon, J. of Chem. Phys.  V 125, 034511 (2006).

 

30. Conformational modification of conducting polymer chains by solvents:
      small-angle X-ray scattering study

      Debjani Bagchi  and Reghu Menon, Chem. Phys. Lett. V 425, 114 (2006).

 

31. Equivalent circuit for organic field-effect transistor from impedance measurements 
      under DC bias:

       Manu Jaiswal and Reghu Menon, App. Phys. Lett. V 88, 123504 (2006).

 

32. Resonantly enhanced transmission through a periodic array of subwavelength
      apertures in heavily doped conducting polymer films :

      Tatsunosuke Matsui and Z. Valy Vardeny, Amit Agrawal and Ajay Nahata and
      Reghu Menon, App. Phys. Lett. V 88, 071101 (2006).

 

33. Electron spin resonance in doped polyaniline:

      V. Sitaram, A. Sharma, S.V. Bhat, K. Mizoguchi and Reghu Menon

      Phys. Rev. B V 72, 035209 (2005).

 

34. Correlation between morphology and ambipolar transport in organic-field effect
      transistors:                                    

      T. B. Singh, S. Gunes, N. Marjanovic, N. S. Sariciftci and Reghu  Menon

         J. Applied Phys., V 97, 114508 (2005).

 

35. Magnetotransport in doped polyaniline:

       A.K. Mukherjee, and Reghu Menon , J. of Phys: Cond. Matt. V 17, 1947 (2005).

 

36. THz time-domain spectroscopy in doped poly-p- phenylene vinylene (MEH-PPV):

Tae-In Jeon, Keun-Ju Kim,  A.K. Mukherjee, and Reghu Menon, Synth. Met. V 150, 53 (2005).

 

37. Charge carrier dynamics  in conducting polymers: case of PF6 doped  polypyrrole:

       I.G. Romijn, H.J. Hupkes, H.C.F. Martins, H.B. Brom, A.K.Mukherjee and Reghu Menon

       Physical Review Letters , V 90, 176602-1, (2003).

 

38.  Electrical and optical characterization of conducting poly-3-methylthiophene film by  
       THz time-domain spectroscopy:

       Tae-In Jeon, D. Grischkowsky, A.K. Mukherjee, and Reghu Menon

Appl. Phys. Letts., V 79, 4142,  (2001).

 

39.  Metal-Insulator transition in doped polypyrrole: Failure of disorder-only models:

H.C.F. Martens,  H.B. Brom, and Reghu Menon, Phys. Rev. B, V 64, 201102 (R), (2001).

 

40. The Metallic state in disordered quasi-one-dimensional conductors:

      H.C.F. Martens, J.A. Reedijk, H.B. Brom, D.M. de Leeuw, and Reghu Menon, Phys. Rev. B,

        V 63, 073203, (2001).

 

41. Electrical characterization of conducting polypyrrole by THz Time-Domain    
      Spectroscopy:

       Tae-In Jeon, D. Grischkowsky, A.K. Mukherjee and Reghu Menon, Appl. Phys. Letts.,

       V 77, 2452,  (2000).

 

42. Density-wave charge dynamics in conducting polypyrrole:

K.H. Lee, Reghu Menon, A.J. Heeger, K.H. Kim, Y.H. Kim, A. Schwartz, M. Dressel and G. Gruner, Phys. Rev. B, V 61, 1635 (2000).

 

43. Processing magnetoresistive thin  films via chemical solution deposition:

A.D. Polli, F.F. Lange, M.A. Ahlskog, Reghu Menon and A.K. Cheetham, J. Mater. Res.

V 24, 1337, (1999).

 

44. The localization-interaction model for conductivity and magnetoconductance in

metallic conducting polymers:

M.A. Ahlskog and Reghu Menon, J. of Phys. Cond. Matter, V 10, 7171, (1998).

 

45.  Nature of metallic state in conducting polypyrrole:

      K.H. Lee, E.K. Miller, A.N. Aleshin, Reghu Menon, A.J. Heeger, J.H. Kim, C.O. Yoon and H.  
      Lee, Adv. Mat., V 10, 456, (1998).

 

46. Magnetoconductivity in doped poly(p-paraphenylenevinylene):

      M.A. Ahlskog and Reghu Menon, J. of Phys. Cond. Matter, V 10, 833, (1998).

 

47. Electronic transport in doped poly(3,4-ethylenedioxythiophene) near the metal

insulator transtion:

A.N. Aleshin, R. Kiebooms, Reghu Menon and A.J. Heeger, Synth. Met., V 90, 61-68, (1997).

 

48. Doping and conductivity studies of poly(p-paraphenylenevinylene):

      M.A. Ahlskog, Reghu Menon, T. Naguchi and T. Ohnishi, Synth. Met., V 89, 11-15, 

      (1997).  

 

49. Metallic conductivity at low temperatures in poly(3,4-ethylenedioxythiophene)

doped with PF6:

A.N. Aleshin, R. Kiebooms, Reghu Menon, F. Wudl and A.J. Heeger, Phys. Rev. B, V 56, 3659, (1997).

 

50.  Polymer light emitting diodes with polyethylene dioxythiophene polystyrene

sulfonate as the transparent anode:

Y. Cao, G. Yu, C. Zhang, Reghu Menon, and A.J. Heeger, Synth. Met., V 87, 171-174  (1997).

 

51.  Transport near the critical regime of M-I transition in conducting polymers:

M.A. Ahlskog, Reghu Menon and A.J. Heeger, J. of Phys. Cond. Matter, V 9, 4145,

(1997).

 

52. Metal-Insulator transition in sulfuric acid doped in polyparaphenylenevinylene:

      M.A. Ahlskog, Reghu Menon, A.J. Heeger, T. Naguchi and T. Ohnishi, Phys. Rev. 
      B
, V 55, 6777, (1997).

 

53.  A pressure sensitive 2-D TCNQ  salt of a stable free radiacal:

K.A. Hutchison, G. Sradanov, Reghu Menon, J.C. Grabiel, B. Knight and F. Wudl, J. of Am. Chem. Soc. (Rap. Com.), 118, 13081, (1996).

 

54.  Pressure dependence of conductivity and magneto-conductivity in irradiated

Polyimide films:

A.N. Aleshin, M.A. Ahlskog and Reghu Menon, J. of Phys. Cond. Matter, V 9, 3601,

(1997).

 

55. Conductivity and magnetoconductivity of iodine doped polyacetylene:

      Reghu Menon,  Synth. Met., V 80, 223, (1996).

 

56. Electronic transport in the metallic state of oriented poly(p-phenylenevinylene):

      M.A. Ahlskog, Reghu Menon, A.J. Heeger, T. Naguchi and T. Ohnishi, Phys. Rev.   
       B
, V 53, 15529, (1996).

 

57. Thermal stability of polyaniline networks in the blends with poly(methyl

Methacrylate) and polyester studies by TEM, spectroscopy and transport:

C.Y. Yang, Y. Cao, Reghu Menon and A.J. Heeger, Synth. Met., V 79, 27, (1996).

 

58. Conducting polymers at low temperatures and high magnetic fields:

J.C. Clark, G.G. Ihas, Reghu Menon, C.O. Yoon, Y. Cao and A.J. Heeger, J. of Low Temp. Phys., V 101, 605, (1995).

 

59. Hopping transport in doped conducting polymers in the insulating regime near the  
      metal-insulator boundary: polypyrrole, polyaniline and polyalkylthiophenes

C.O. Yoon, Reghu Menon, D.Moses, A.J. Heeger, Y. Cao, T.A. Chen, X. Wu, R.D. Rieke, Synth. Met., V 75, 229, (1995).

 

60. Reflectance of conducting polypyrrole: Obeservation of the metal-insulator

transition driven by disorder:

Kwanghee Lee, Reghu Menon, C.O. Yoon and A.J. Heeger, Phys. Rev. B, V 52, 4779, (1995).

 

61. Infrared reflectance of  polypyrrole: ‘metal’ with a gap in the spectrum of

charged excitations:

Kwanghee Lee, Reghu Menon, E.L. Yuh, N.S. Sacrifitci, and A..J. Heeger, Synth. Met.,
V 68, 287, (1995).

 

62. Transport in polyaniline networks near the percolation threshold:

      Reghu Menon, C.O. Yoon, C.Y. Yang, Y. Cao, D. Moses and A.J. Heeger, Phys. 
      Rev.B
,  V 50, 13931, (1994).

 

63. Tuning through the critical regime of the metal-insulator transition in

conducting polymers by pressure and magnetic field:

Reghu Menon, K. Vakiparta, C.O. Yoon, Y. Cao, D. Moses and A.J. Heeger, Synth. Met.,
V 65, 167, (1994).

 

64. Pressure and magnetic field dependence of the low temperature resistivity of PF6

      doped polypyrrole:

      Reghu Menon, C.O. Yoon, D. Moses and A.J. Heeger, Synth. Met., V 64, 53,   
      (1994).

 

65. Electrical transport in conducting polymer blends of polyaniline in poly(methyl

methacrylate):

C.O. Yoon, Reghu Menon, D. Moses, A.J. Heeger and Y. Cao, Synth. Met., V 63, 47, (1994).

 

66. Effect of ageing on the temperature dependence of conductivity of poly

      (3-hexylthiophene) doped by FeCl3:

      K. Vakiparta, Reghu Menon, M.R. Andersson, J. Moulton and T. Taka, Solid State

      Commun., V 87, 619, (1993).

 

67. Pressure dependence of conductivity and magnetoresistance in oriented iodine

doped polyacetylene:

Reghu Menon, K. Vakiparta, Y. Cao and D. Moses, Phys. Rev.B, V 49, 16162, (1994).

 

68. Transport near the metal-insulator transition: Polypyrrole doped with PF6:

C.O. Yoon, Reghu Menon, D. Moses and A.J. Heeger, Phys. Rev.B, V 49, 10851,

(1994).

 

69. Spectroscopic characterization of soluble and stable polyacetylene blend:

N.S. Sariciftci, V. Kobryanskii, Reghu Menon, M.L. Smilowitz, C. Halvorson, T.W. Hagler, D. Mihailovic and A.J. Heeger, , Synth. Met., V 53, 161, (1993).

 

70. Superlocalization of the electronic wave function in conductive polymer blends

      at concentrations near the percolation threshold:

     Reghu Menon, C.O.Yoon, D. Moses, A.J. Heeger and Y. Cao, Macromolecules, V

     26, 7245, (1993).

 

71. Transport in polyaniline near the critical regime of the metal-insulator

Transition:

Reghu Menon, C.O.Yoon, D. Moses, A.J. Heeger and Y. Cao, Phys. Rev.B, V 48

17685 (1993).

 

72. Counterion-induced precessibility of polyaniline: Thermoelectric power:

      C.O.Yoon, Reghu Menon, D. Moses, A.J. Heeger and Y. Cao, Phys. Rev.B, V 48,

      14080, (1993).

 

73. Temperature dependence of the electrical conductivity of potassium-doped

Polyacetylene as a function of pressure and magnetic field:

K. Vakiparta, Reghu Menon, M.R. Andersson, Y. Cao, D. Moses and A.J. Heeger,

Phys. Rev.B, V 47, 9977, (1993).

 

74. Conductivity of oriented polyacetylene doped by alkali metals: Time,

Temperature and pressure dependence:

M.R. Andersson, K. Vakiparta, Reghu Menon, Y. Cao, D. Moses and A.J. Heeger,

Phys. Rev.B, V 47, 9238, (1993).

 

75. Counterion-induced precessibility of polyaniline: Transport at the metal-

Insulator boundary:

Reghu Menon, Y. Cao, D. Moses and A.J. Heeger, Phys. Rev.B, V 47, 1758, (1993).

 

76. The contribution of polarons and bipolarons to low temperature conductivity in

doped polypyrrole:

 Reghu Menon, S.V. Subramanyam and S. Chatterjee, Phys. Rev.B, V 43, 4236, (1991).

 

77. Miniature high pressure cell for transport property measurements down to 2 K:

      Reghu Menon, R.S. Vidyanathan, V. Prasad and S.V. Subramanyam, Rev. of Sci.

      Instru., V 61, 1336 (1990).

 

78. Suppression of tunnel transport by magnetic field in doped polypyrrole:

     Reghu Menon and S.V. Subramanyam, Phys. Lett. A, V 145, 371 (1990).

 

79. Tunnel transport in doped polypyrrole at low temperatures:

     Reghu Menon and S.V. Subramanyam, Solid State Commun., V 72, 325 (1989).

 

80. Pressure induced incommensurate to commonsurate transition in K3Cu8S6:

     Reghu Menon, S.V. Subramanyam and S. Chatterjee, Solid State Commun., V 69,

     949 (1989).

 

 

    International conference papers (referred) :

 

81. Estimation of Charge Transport Parameters and Equivalent Circuit for Polyalkyl 
       thiophene Field-Effect Transistors

      C.S.S. Sangeeth, M.Jaiswal, and Reghu Menon

      AIP Conf. Proce. V 1313, 140-142, (2010) (PEFM- 2010)

 

82. Electrical Percolation studies of Polystyrene-multi wall carbon nanotubes Composites
      R. Bhatia R, V. Prasad V and 
Reghu Menon   

     AIP Conf. Proce.   V 1147, 402-408   (2009)

   

83. THz time-domain spectroscopy studies of subwavelength hole arrays in metallic films,

      T. Masui, A. Agrawal, A. Nahata, R. Menon and V.Z. Vardeny,  Physica B V 394, 363 (2007).

 

84. Tuning phase transitions and realizations of special thermodynamic states in alcohol- 
      water mixtures by the additions of ions

      Bagchi D, Kumar A, Menon R, Physica A, V 384, 1, (2007).

85. Physical, chemical and theoretical aspects of conducting polymer electrochromics

      in the visible, IR and microwave regions:                                                              

      P. Chandrasekhar, B. J. Zay, T. McQueeney, G. C. Birur, V. Sitaram,  Reghu Menon,
      M. Coviello and R. L. Elsenbaumer, Synth. Met., V155, 623 (2005).

 

86. Charge carrier properties below and above the metal-insulator transition in conjugated 
      polymers – recent results

      Brom HB, Martens HCF, Romijn IG and Menon R
     
Proceedings of 10th Conference on Hopping and Related Phenomena, Trieste, Italy, 2004     
       Phys. Stat. Sol (c), 1, 144-147, (2004).

87. The Drude parameters for metallic PF6 doped polypyrrole:

       I.G. Romijn, H.B. Brom, H.J. Hupkes, A.K.Mukherjee and Reghu  Menon, Synth.  Met.,

       V 135-136, 243 (2003).

 

88.  Electrical and optical characterization of conducting polymers by THz time-domain
       spectroscopy:

T-I.Jeon, D.Grischkowsky, A.K.Mukherjee and Reghu Menon, Synth. Met., V 135 -  
136, 451 (2003).

 

89. Role of mesoscopic morphology in charge transport of doped polyaniline:

      A.K. Mukherjee and Reghu Menon, Pramana  V 58, 233 (2002).

 

90. Study of electrical conduction in polypyrrole by varying the doping level

      Sutar D, Menon R and  Subramanyam S.V

      Thin Solid Films, 417, 40 (2002).

 

91. The role of molecular recognition in charge transport properties of doped polyaniline:    
      A.K.Mukherjee and Reghu Menon, Applied Biochemistry & Biotechnology , V 96, 145,   
     (2001).

 

92. Low temperature conductivity of metallic conducting polymers:

M.A. Ahlskog, A.K. Mukherjee and Reghu Menon,  Synth. Met., V 119, 457 (2001).

 

 

93. Magnetoresistance in doped polyaniline:

Reghu Menon and A.K. Mukherjee, Synth. Met., V 119, 427 (2001).

 

94. Unusual carrier dynamics in disordered quasi-1D systems:

      H.C.F. Martens, JO. Hilt, H.B. Brom, D.M. de Leeuw, and Reghu Menon,

       Synth. Met.,, V 119, 423 (2001).

 

95. Density wave dynamics in doped polyprrole:

K.H. Lee, Reghu Menon, A.J. Heeger, Synth. Met., V 119, 653  (2001).

 

96. Conductivity and magnetoresistance in polypyrrole-PF6 at  various doping levels

      Sutar D, Mithra M, Menon R and  Subramanyam S.V

      Synth. Met., 119, 455 (2001).

 

97. Electrical transport and reflectance studies on polypyrrole-CF3SO3 in the vicinity of  
      metal-insulator transition

     Mithra M, Cao Y, Cho S, Sutar D, Lee K, Menon R and Subramanyam S.V

     Synth. Met., 119, 437 (2001).

 

98. The localization-interaction model for the dc- conductivity of metallic conducting
      polymers:

 M.A. Ahlskog and Reghu Menon,  Synth. Met., V 101, 367  (1999).

 

99. Magnetoconductivity in doped poly(p-phenylenevinylene):

 M.A. Ahlskog and Reghu Menon,  Synth. Met., V 101, 344  (1999).

 

100.  High field NMR Studies of Conduction Elelctron Dynamics in Doped Polypyrrole-PF6:

        W.G. Clark, K.B. Tanaka, S.E. Brown, Reghu Menon, F. Wudl, W.G. Moulton, and P.  
        Kuhns,(a) Synth. Met., V 101, 343  (1999); (b) published in Physical Phenomena at High  
        Magnetic Fields
, (eds. Z. Fisk, L. Gorkov and R. Schrieffer),
World Scientific, Singapore,  
        p. 223-6 (1999).

 

101. Transport near the critical regime of metal-insulator transition in conducting

 polymers:

       M.A. Ahlskog and Reghu Menon (Proc. Of 7th Int. Conf. Of Hopping and Related     
       Phenomena, Aug. 1997), Phys. Stat. Sol
. (b), V 205, 305, (1998).

 

102. Electronic transport in sulfuric acid doped poly ( p-phenylenevinlylene):

        M.A. Ahlskog, Reghu Menon, A.J. Heeger, T. Naguchi and T. Ohnishi, Synth. Met. V 84,

        619, (1997).

 

103. A stable free radical as donor: A layer structure organic pressure sensor:

 K.A. Hutchinson, G. Sradanov, Reghu Menon, J.C. Grabiel, B. knight and F. Wudl,

 Synth. Met., Synth. Met. V 86, 2147 (1997).

 

104. Oscillations in resistivity of an organic polymer at low temperatures:

  E.J. Boettcher, G.G. Ihas, Reghu Menon and A.J. Heeger,Czech. J. of Phys. , V 46,

 2605, (1996), (Proc. of LT 21, July 1996).

 

105.  Resistivity and magnetoresistance of metallic polyaniline and polypyrrole at

  millikelvin temperatures:

  J.C. Clark, A.J. Rafenello, m.W. Meisel, G.G. Ihas, Reghu Menon, C.O.Yoon,

 Y. Cao and A.J. Heeger, Synth. Met., V 69, 215, (1995).

 

106. Thermoelectric power of doped polyaniline near the metal-insulator transition:

        C.O.Yoon, Reghu Menon, D. Moses, Y. Cao and A.J. Heeger, Synth. Met., V 69,

        273, (1995).

 

107. Characteristic temperature dependence of resistivity in PPy-PF6 near the metal-

        insulator transition:

       C.O.Yoon, Reghu Menon, Y. Cao and A.J. Heeger, Synth. Met., V 69, 369, (1995).

 

108. Effect of anisotropy of conductivity and magnetoresistance in heavily doped

        polyacetylene:

       C.O.Yoon, Reghu Menon, A.J. Heeger, E.B. Park, Y.W. Park, K. Akagi and

     H. Shirakawa, Synth. Met., V 69, 79, (1995).

 

109. Transport in blends of conducting polymers:

       C.O.Yoon, Reghu Menon, D. Moses, Y. Cao and A.J. Heeger, Synth. Met., V 69,

       255, (1995).

 

110. Magnetoresistance in polyaniline networks near the percolation threshold:

       C.O.Yoon, Reghu Menon, D. Moses, Y. Cao and A.J. Heeger, Synth. Met., V 69,

       271, (1995).

 

111. Tuning through the critical regime of the metal-insulator transition in

       conducting polymers by pressure and magnetic field:

       Reghu Menon, C.O.Yoon, D. Moses, Y. Cao and A.J. Heeger, Synth. Met., V 69,

       329, (1995).

 

112.  Spectroscopic characterization of new, stable and soluble polyacetylene blend:

         N.S. Sariciftci, Reghu Menon, C. Halvorson, A.J. Heeger, V. Kobryanskii,

        Synth. Met., 55-57, 153, (1993).

 

113. Temperature dependence of conductivity of potassium doped polyacetylene:

       M.R. Andersson, Reghu Menon, K. Vakiparta, Y. Cao, D. Moses and A.J. Heeger,

       Synth. Met., 55-57, 4882, (1993).

 

114. Anisotropy in magnetoconductivity in oriented polyacetylene doped with iodine:

        K. Vakiparta, Reghu Menon, M.R. Andersson, Y. Cao, D. Moses and A.J. Heeger,

        Synth. Met., 55-57, 4860, (1993).

 

115. Metal-insulator transition in polyaniline doped with surfactant counterion:

       Reghu Menon, Y. Cao, D. Moses and A.J. Heeger, Synth. Met., V 55-57, 5020,

       Synth. Met., V 86, 2147, (1993).

 

116. The contribution of polarons, bipolarons and tunnel transport to low

 temperature conductivity in doped polypyrrole:

 Reghu Menon and S.V. Subramanyam, Synth. Met., V 41, 455, (1991).

 

 

 

      Invited contribution in books / Journals:

 

117. Title:  Nanocomposites  of conducting polymers and carbon nanotubes :

       P.K. Chaudhury, K.P. Ramesh and Reghu Menon 

       Encyclopedia of Nanoscience and Nanotechnology, Chapter 219, American Scientific  
      Publishers
,  Los Angeles, in print (2011).

 

118. Title: Organic Field Effect Transistors:  from materials to device physics

      T.B. Singh, N.S. Sariciftci, M. Jaiswal and Reghu Menon,

      Handbook of Organic Electronics and Photonics, Ed. H.S. Nalwa, ASP, LA, Vol. 3, 11153-176, (2008).  

 

119. Title: Polymer electronic materials: a review of charge transport

        Manu Jaiswal and Reghu Menon, Polymer International, 55, 1371 (2006).

 

120. Title:  Polyaniline fractal nanocomposites

       Reghu Menon and A.K. Mukherjee

       Encyclopedia of Nanoscience and Nanotechnology, Vol 8, American Scientific  
       Publishers
,  Los Angeles, p: 715- 729 (2004).

 

121. Title: Charge Transport in Conducting Polymers and Carbon Nanotubes: A Comparision
       Reghu Menon
and A.K. Mukherjee 

        in “Electronic and Optical Properties of Conjugated Molecular Systems 
        Ed. by Shu Hotta, Research Signpost, p: 287-306 (2003).

 

122. Title: Transport Properties in Doped Conducting Polymers by Reghu Menon

  (in “Organic Photovoltaics  Eds. by C. Brabec, V. Dyakonov, J. Parisi and N.S. Sariciftci,
  Springer-Verlag, p: 91-117 (2003)

 

123. Title: Electrical properties of doped conjugated polymers  by Reghu Menon

  (in Handbook of Polymer in Electronics, Ed. by B.D. Malhotra, Rapra Tech, UK, p: 35-66   
 (2002). 

 

124.  Title: “Synthesis, electrical and optical properties of conjugated polymers” by

R. Kiebooms, Reghu Menon and K.H. Lee (in Handbook of Advanced  Materials for Electronics and Photonics, Vols, 1-10. Ed. by H.S. Nalwa, Academic Press, Vol. 8,
p:
1-102, (2001).

 

125. Title: “Transport near the metal-insulator transition in conducting polymers” by

        Reghu Menon, C.O.Yoon, D. Moses and A.J. Heeger.                                [citations ~ 105]

        (in Handbook of conducting polymers, 2nd Revised and Expanded Ed. {Eds.

        Skotheim, J. Reynolds and R. Elsenbaumer}, Marcel Dekker, p: 27- 84, (1998).

 

126. Title: “Charge transport in conducting polymers” by Reghu Menon       [citations ~40]

        (in Handbook of conductive organic molecules and polymers (Vols. 1-4), Ed. H.S.

        Nalwa, J. Wiley & Sons, Vol. 4, p: 47 – 146, (1997).

 

 

      Popular science article:

 

127. Conducting polymers - Nobel Prize in Chemistry : Reghu Menon, Current Science, V   
   79, 1632 (2000). 

 

 

Invited talks in international conferences:

 

1.     Title: Magnetoconductance and electroconductance in SWNT:

      Presented at the 22nd  Int. Conf. of Synthetic Metals (ICSM 2010) at Kyoto, Japan (July 2010).

2.   Title: High frequency charge transport in conducting polymers

Presented at the International Conference of Electrical Properties of Organic Soilds (ERPOS), at Cargese, Corsica ( July 2005).

3,   Title: High frequency charge transport and ESR in conducting polymers: (20 min).

Presented at the International Conference on QTSM & QFS at Seoul, South Korea (Nov 19th 2003).

4. Title: Electron spin resonance in doped polyaniline: (20 min). Presented at the 18th Int.   
    Conf. of Synthetic Metals (ICSM 2002) at Shanghai, China (July 2002).

5. Title: GHz dielectric response and magnetoresistance in conducting polymers and
    carbon nanotubes: (20 min).
Presented at the International Conference on QTSM & QFS 
    at Seoul, South Korea (June 2001).

6. Title: Metal-Insulator transition in conducting polymers: (20 mts). Presented at the 
    International discussion meeting on mesoscopic and disordered systems at Bangalore , India
   
(Dec. 2001).

7. Title: Magnetoresistance in doped polyaniline: (20 min). Presented at the 17th Int. Conf. of  
    Synthetic Metals (ICSM 2000) at Gastein, Austria (July, 2000).

8. Title; Transport near the critical regime of metal-insulator transition in conducting

    polymers: (40 min). Presented at the 7th. Int. Conf. for Hopping and Related

    Phenomena at Raackeve, Hungary (Aug. 1997).

9. Title: Transport in conducting polymers: metallic, critical and insulating regimes:

    (20 min). Presented at the 15th Int. Conf. of Synthetic Metals (ICSM 96) at Snowbird,

    Utah, USA (July, 1996).

10. Title: Tuning through the critical regime of the metal-insulator transition in

     conducting polymers by pressure and magnetic field: (20 min).

    Presented at the 14th Int. Conf. of Synthetic Metals (ICSM 94) at Seoul, South Korea

    (July, 1994).

11. Title: Metal-Insulator transition in polyaniline doped with surfactant counterion:

    (20 min). Presented at the 13th Int. Conf. of Synthetic Metals (ICSM 92) at Gotenborg

    Sweden, (Aug. 1992).

12. Title: Charge transport in doped conducting polymers: (20 min).

     Presented at the First Int. Conf. for Advanced Materials at New Delhi (Jan. 1991).

 

Invited talks at national conferences

 

1.     Title: Metal-Insulator transition in conducting polymers: (30 mts)

Solid State Physics Symposium, BARC- Mumbai, Dec 26, 2001.

2.     Title: Charge Transport in Doped Conjugated Polymers:  (25 mts)

National Symposium of Biomolecular Electronics, NPL, New Delhi, Oct 1999.

 

 

 

 

 Visiting Positions:

 

1.    Guest Professor: Institut for Chemie, Abt. Physikal Chemie, Johannes Kepler Univ., Linz, Austria, (summers of 1997, 2000, 2004, 2005, 2006, 2008, autumn 2010, summer 2011, 2012).

2.   Guest Professor:  Dept. of Physics, Seoul National University, Seoul, Korea (May
      2001).

3.  Guest Professor: Department of Physics, Univ. of Jyvaskyla, Finland, (Summer 
     2005).

3.     On Sabbatical: CPOS, Univ. of California at Santa Barbara (2007).  

 

 

 

 

Awards/ Honors:

 

1.    Martin Foster Gold Medal  for the best Ph.D thesis in Division of Math. &  Phys.Sci. (1990-91).

2.    Associated with Nobel Laureate Alan J. Heeger, at University of California at Santa Barbara  (1991-97); and coauthored  26 research papers (citations / paper ~ 55),
14 international conference papers and 1 review article.  

3.    In the International Advisory Board of the 15-22th International  Conference on Science and Technology of Synthetic Metals (ICSM 2000 to 2010)* .

      Chaired the following sessions:   
     “ Structure and Related Properties ” at ICSM 2000 - Gastein 

      “ Transport Properties ” at ICSM 2002 - Shanghai

      “ Molecular & Polymeric Materials for Photonics & Displays “ at ICSM 2006 - Dublin.

      “ Next-generation organic materials and device applications“ at ICSM 2010 - Kyoto

4.    Nominated to the Editorial  Board of Journal of Nanoscience and Nanotechnology (published by American Scientific Publishers, Los Angeles, USA; website: http://www.aspbs.com/journals/jnn)

5.    Nominated to the International Advisory Board of Encyclopedia of Nanoscience and Nanotechnology (published by American Scientific Publishers, 2003, Los Angeles, USA;

      website: http://www.aspbs.com).

6.    Referee for American Physical Society journals, etc.