@article { ISI:000258037300073, title = {RuO(2) doped SnO(2) nanobipyramids on Si (100) as a field emitter}, journal = {Thin Solid Films}, volume = {516}, number = {18}, year = {2008}, month = {JUL}, pages = {6388-6391}, publisher = {ELSEVIER SCIENCE SA}, address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND}, abstract = {

Thin films of RuO(2): SnO(2) nanobipyramids have been grown on silicon (100) flat substrates, and their field emission behavior has been investigated. The field emission experiments have been performed in parallel plate configuration. In this experiment, the onset field for 0. 1 gA/ cm 2 current density has been found to be 0.2 V/mu m. The Fowler-Nordheim plot shows non-linear nature typical that of a semiconductor. The field enhancement factor has been estimated to be 35,600 cm(-1), indicating that the field emission originates from the nanometric features of the emitter. The current stability recorded at a preset value of I tA is observed to be good. Our field emission results on RuO(2): SnO(2) nanobipyramids indicate that, RuO(2): SnO(2) nanobipyramids are a potential candidate for futuristic field emission based devices. (c) 2008 Elsevier B.V. All rights reserved.

}, keywords = {doped semiconductor, field emitter, field enhancement factor, ruthenium oxide, tin oxide}, issn = {0040-6090}, doi = {10.1016/j.tsf.2007.12.160}, author = {Bhise, Ashok B. and Late, Dattatray J. and Ramgir, Niranjan S. and More, Mahendra A. and Mulla, Imtiaz S. and Pillai, Vijayamohanan K. and Joag, Dilip S.} } @article { ISI:000355985200027, title = {Role of the molecular structure of carboxylate-alumoxanes in the enhanced nucleation of polypropylene}, journal = {Chemical Communications}, volume = {51}, number = {49}, year = {2015}, month = {MAY}, pages = {10026-10029}, publisher = {ROYAL SOC CHEMISTRY}, address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND}, abstract = {

We have reported the use of carboxylate-alumoxanes as efficient nucleating agents for isotactic polypropylene (iPP) with a possible structural correlation to the nucleation efficiency. The unique, butterfly-like structure of carboxylate-alumoxanes correlates well with the nucleation characteristics of iPP and, for the first time, the impact of a thermally induced, crystalline transition of carboxylate-alumoxanes, which alters neither the structural conformation nor the nucleation efficiency of the transformed material, is demonstrated.

}, issn = {1359-7345}, doi = {10.1039/c5cc01327e}, author = {Mani, Mohan Raj and Chellaswamy, Ramesh and Marathe, Yogesh N. and Pillai, Vijayamohanan K.} } @article {46169, title = {Role of structural distortion in stabilizing electrosynthesized blue emitting phosphorene quantum dots}, journal = {Journal of Physical Chemistry Letters}, volume = {10}, year = {2019}, month = {MAR }, pages = {973-980}, type = {Article}, abstract = {

Luminescent phosphorene quantum dots (PQDs) have emerged as fascinating nanomaterials for potential applications in optoelectronics, catalysis, and sensing. Herein, we investigate the structural distortion of black phosphorus (BP) under an applied electric field to yield blue luminescent PQDs [average diameter 8 +/- 1.5 nm (N = 60)]. The electrosynthesized PQDs exhibit photoluminescence emission independent of excitation wavelength with 84\% quantum efficiency. Structural distortion that occurred during the transformation of BP to PQDs is confirmed by results obtained during transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. Further, using first-principles-based density functional theory, calculations on oxygenated and nonoxygenated PQDs augment the experimental observations that an optimum oxygen content maintains the structural integrity of PQDs, above which the structural robustness of PQDs is drastically diminished.

}, issn = {1948-7185}, doi = {10.1021/acs.jpclett.8b03600}, author = {Valappil, Manila Ozhukil and Joshi, Krati and John, Lisa and Krishnamurthy, Sailaja and Jana, Bikash and Patra, Amitava and Pillai, Vijayamohanan K. and Alwarappan, Subbiah} }