Periodic Reporting for period 1 - 2DSi (Magnetic Sensors based on Two-Dimensional Materials/Si)
Reporting period: 2015-08-03 to 2017-08-02
Controlling the capillary/channel dimensions in a flexible and controllable way is still a dream as the demonstrated nanochannels are made using nanotubes, nanopores or graphene oxide, which lack the scalability required for large scale nanofluidic applications. To remove this bottleneck, we have taken lessons from the recent discovery of graphene which was produced by peeling monolayers from graphite crystals. To create scalable nanofluidic channels, we have aimed to utilize the mechanical peeling capability of van der Waals crystals and lithographic techniques. The aim is to fabricate atomically thin fluidic channels so as to have these membranes either performing desalination or isolate individual ions from a mixture of ions, for example, industrial waste.
 J. Abraham, K. S. Vasu, C. D. Williams, K. Gopinadhan, Y. Su, C. T. Cherian, J. Dix, E. Prestat, S. J. Haigh, I. V. Grigorieva, P. Carbone, A. K. Geim, R. R. Nair, Tunable sieving of ions using graphene oxide membranes. Nat. Nanotechnol. 12, 546-550 (2017).
 B. Radha, A. Esfandiar, F. C. Wang, A. P. Rooney, K. Gopinadhan, A. Keerthi, A. Mishchenko, A. Janardanan, P. Blake, L. Fumagalli, M. Lozada-Hidalgo, S. Garaj, S. J. Haigh, I. V. Grigorieva, H. A. Wu, A. K. Geim, Molecular transport through capillaries made with atomic-scale precision. Nature 538, 222-225 (2016).
 A. Esfandiar, B. Radha, F. C. Wang, Q. Yang, S. Hu, S. Garaj, R. R. Nair, A. K. Geim, K. Gopinadhan, Size effect in ion transport through angstrom-scale slits, Science (Accepted) (2017).