Viswanath Pasumarthi

All Publications

• Charge carrier transport dynamics in W/Mo-doped BiVO4: first principles-based mesoscale characterization JOURNAL OF MATERIALS CHEMISTRY A Pasumarthi, V., Liu, T., Dupuis, M., Li, C. 2019; 7 (7): 3054–65

  View details for DOI 10.1039/c8ta09899a

  View details for Web of Science ID 000458682100053

• Bimodal hole transport in bulk BiVO4 from computation JOURNAL OF MATERIALS CHEMISTRY A Liu, T., Pasumarthi, V., LaPorte, C., Feng, Z., Li, Q., Yang, J., Li, C., Dupuis, M. 2018; 6 (8): 3714–23

  View details for DOI 10.1039/c7ta10170h

  View details for Web of Science ID 000425623600046

• Multiscale modelling strategies and experimental insights for the solvation of cellulose and hemicellulose in ionic liquids Mohan, M., Viswanath, P., Banerjee, T., Goud, V. V. TAYLOR & FRANCIS LTD. 2018: 2108–28

  View details for DOI 10.1080/00268976.2018.1447152

  View details for Web of Science ID 000437722400019

• Interfacial insights on the dibenzo-based crown ether assisted cesium extraction in [BMIM][Tf2N]-water binary system JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY Biswas, R., Pasumarthi, V., Banerjee, T., Ghosh, P., Ali, S., Joshi, J. M. 2017; 311 (1): 427–38

  View details for DOI 10.1007/s10967-016-5050-8

  View details for Web of Science ID 000392075200045

• Self-spinning nanoparticle laden microdroplets for sensing and energy harvesting NANOSCALE Bhattacharjee, M., Pasumarthi, V., Chaudhuri, J., Singh, A., Nemade, H., Bandyopadhyay, D. 2016; 8 (11): 6118–28

  Abstract

  Exposure of a volatile organic vapour could set in powerful rotational motion a microdroplet composed of an aqueous salt solution loaded with metal nanoparticles. The solutal Marangoni motion on the surface originating from the sharp difference in the surface tension of water and organic vapour stimulated the strong vortices inside the droplet. The vapour sources of methanol, ethanol, diethyl ether, toluene, and chloroform stimulated motions of different magnitudes could easily be correlated to the surface tension gradient on the drop surface. Interestingly, when the nanoparticle laden droplet of aqueous salt solution was connected to an external electric circuit through a pair of electrodes, an ∼85-95% reduction in the electrical resistance was observed across the spinning droplet. The extent of reduction in the resistance was found to have a correlation with the difference in the surface tension of the vapour source and the water droplet, which could be employed to distinguish the vapour sources. Remarkably, the power density of the same prototype was estimated to be around 7 μW cm(-2), which indicated the potential of the phenomenon in converting surface energy into electrical in a non-destructive manner and under ambient conditions. Theoretical analysis uncovered that the difference in the ζ-potential near the electrodes was the major reason for the voltage generation. The prototype could also detect the repeated exposure and withdrawal of vapour sources, which helped in the development of a proof-of-concept detector to sense alcohol issuing out of the human breathing system.

  View details for DOI 10.1039/c6nr00217j

  View details for Web of Science ID 000372245900040

  View details for PubMedID 26931770

• Detection of organic vapours employing droplets having nanoparticles Bhattacharjee, M., Pasumarthi, V., Chaudhuri, J., Singh, A., Nemade, H., Bandyopadhyay, D., IEEE IEEE. 2016: 110–13

  View details for Web of Science ID 000402621300020