@article{ISI:000447239100031, abstract = {The ubiquitous nature of water invariably leads to a variety of physical scenarios that can result in many intriguing properties. We investigate the thermodynamics and associated phase transitions for a water monolayer confined within a quasi-two-dimensional nanopore. An asymmetric nanopore constructed by combining a hydrophilic (hexagonal boron nitride) sheet and a hydrophobic (graphene) sheet leads to an ordered water structure at much higher temperatures compared to a symmetric hydrophobic nano pore consisting of two graphene sheets. The discontinuous change in the thermodynamic quantities, potential energy (U), and entropy (S) of confined water molecules computed from the all-atom molecular dynamics simulation trajectories, uncovers a first-order phase transition in the temperature range of T = 320-330 K. Structural analysis reveals that water molecules undergo a disorder-to-order phase transformation in this temperature range with a 4-fold symmetric phase persisting at lower temperatures. Our findings predict a novel confinement system which has the melting transition for monolayer water above the room temperature, and provide a microscopic understanding which will have important implications for other nanofludic systems as well.}, author = {Kumar, Hemant and Dasgupta, Chandan and Maiti, Prabal K.}, doi = {10.1021/acs.langmuir.8b02147}, issn = {0743-7463}, journal = {LANGMUIR}, month = {OCT 9}, number = {40}, orcid-numbers = {Kumar, Arun/0000-0001-8422-0219 Maiti, Prabal K/0000-0002-9956-1136 Kumar, Hemant/0000-0003-4339-5711}, pages = {12199-12205}, researcherid-numbers = {Dasgupta, Chandan/R-4852-2019 Kumar, Arun/C-9149-2009 }, times-cited = {7}, title = {Phase Transition in Monolayer Water Confined in Janus Nanopore}, unique-id = {ISI:000447239100031}, volume = {34}, year = {2018} }