@article { ISI:000348455100007, title = {Spectral analysis of the emission current noise exhibited by few layer WS2 nanosheets emitter}, journal = {Ultramicroscopy}, volume = {149}, year = {2015}, month = {FEB}, pages = {51-57}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Spectral analysis of the field emission (FE) current fluctuations has been carried out at the base pressure similar to 1 x 10(-8) mbar. The emission current stability investigated at preset value of 2 mu A is characterized by {\textquoteleft}step like fluctuation. The spectral analysis performed on a FFT (Fast Fourier Transform) analyzer revealed that the observed noise is of 1/f(alpha) type, with the value of alpha as similar to 1.05. The estimated value of alpha implies that the current fluctuations are mainly due the various processes occurring on atomic scale like adsorption, migration, and/or desorption of the residual gas species on the emitter surface. (C) 2014 Elsevier B.V. All rights reserved.

}, keywords = {Current fluctuations, field emission, Noise, WS2 nanosheets}, issn = {0304-3991}, doi = {10.1016/j.ultramic.2014.10.004}, author = {Suryawanshi, Sachin R. and Kolhe, Pankaj S. and Rout, Chandra S. and Late, Dattatray J. and More, Mahendra A.} } @article { ISI:000375270600080, title = {Surface modification of aligned CdO nanosheets and their enhanced field emission properties}, journal = {RSC Advances}, volume = {6}, number = {47}, year = {2016}, month = {APR}, pages = {41261-41267}, publisher = {ROYAL SOC CHEMISTRY}, address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND}, abstract = {

Porous aligned CdO nanosheets were grown on a cadmium (Cd) substrate by the simple and cost effective method of thermal annealing. Further, decoration of gold (Au) nanoparticles on the porous aligned CdO nanosheets (specimen A) was achieved by coating with a Au thin film and subsequent annealing treatment. The average diameters of decorated Au nanoparticles were found to be 15 nm, 21 nm and 28 nm for the Au thin films with 20 s, 40 s and 60 s (specimens B, C, and D) coating times. Detailed characterizations, such as structural and morphological analysis of porous CdO nanosheets and Au/CdO nanocomposite (Au decorated porous CdO nanosheets), have been carried out using a Field Emission Scanning Electron Microscope (FESEM), X-ray diffraction (XRD) and a Transmission Electron Microscope (TEM). Field emission studies of specimens A, B, C and D were carried out in the planar diode configuration. Turn-on fields of 1.9 V mu m(-1), 1.1 V mu m(-1), 2.4 V mu m(-1) and 2.8 V mu m(-1) have been found for the emission current density of 10 RA cm(-2) for specimens A, B, C and D, respectively. The observed low turn -on field of specimen B (Au diameter of 15 nm) was found to be superior to other semiconducting nanostructures reported in the literature. The field emission current stability over a period of 3 h at the preset current density of 1 RA cm(-2) is found to be excellent for all specimens. To the best of our knowledge, field emission studies along with surface modification of porous aligned CdO nanosheets have not been reported in the literature. The simple synthesis route, facile surface modification and the superior field emission results make the present emitter very suitable for micro/nano electronic devices.

}, issn = {2046-2069}, doi = {10.1039/c5ra28000a}, author = {Bagal, Vivekanand S. and Patil, Girish P. and Deore, Amol B. and Suryawanshi, Sachin R. and Late, Dattatray J. and More, Mahendra A. and Chavan, Padmakar G.} } @article { ISI:000373619000021, title = {Synthesis, microstructure, optical and field emission studies of iron vanadium oxide nanosheets}, journal = {Journal of Physics D-Applied Physics}, volume = {49}, number = {14}, year = {2016}, month = {APR}, pages = {145301}, publisher = {IOP PUBLISHING LTD}, address = {TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND}, abstract = {

We report a single step growth of thin graphene-like, densely packed FeV3O8 (FVO) nanosheets on silicon substrates via facile hydrothermal synthesis. These nanosheets have dimensions of a few microns with thin edges, offering very high aspect ratio. These FVO nanosheets exhibit excellent field emission behaviour with low turn on and threshold voltages of 1.3 V mu m(-1) and 1.7 V mu m(-1), respectively. The corresponding emitter delivers high emission current density of (similar to 1.650 mA cm(-2)) at fairly low applied field (similar to 4.00 V mu m(-1)).

}, keywords = {FeV3O8, field emission, nanosheets}, issn = {0022-3727}, doi = {10.1088/0022-3727/49/14/145301}, author = {Badadhe, Satish S. and Suryawanshi, Sachin R. and Naphade, Rounak A. and Chaudhary, Minakshi V. and More, Mahendra A. and Shelke, Manjusha V. and Ogale, Satishchandra B.} }