130 citations · 626 across the 19 of their papers we have counts for
19 papers
Localized tip enhanced Raman spectroscopic study of impurity incorporated single GaN nanowire in the sub-diffraction limit
A. Patsha, S. Dhara, A. K. Tyagi
The localized effect of impurities in single GaN nanowires in the sub-diffraction limit is reported using the study of lattice vibrational modes in the evanescent field of Au nanop…
Nonpolar p-GaN/n-Si heterojunction diode characteristics: A comparison between ensemble and single nanowire devices
Avinash Patsha, Ramanathaswamy Pandian, Sandip Dhara +1
The electrical and photodiode characteristics of ensemble and single p-GaN nanowire and n-Si heterojunction devices were studied. Ideality factor of the single nanowire p-GaN/n-Si…
Carrier mediated reduction of stiffness in nanoindented crystalline Si(100)
S. Kataria, Sandip Dhara, S. Dash +1
We report the observation of carrier mediated decrease in the stiffness of crystalline (c)-Si(100) under nanoindentation. The apparent elastic modulii of heavily dopes (1E21 cm-3)…
XPS studies on AlN thin films grown by ion beam sputtering in reactive assistance of N+/N2+ ions: Substrate temperature induced compositional variations
Neha Sharma, S. Ilango, S. Dash +1
We report on an XPS study of AlN thin films grown on Si(100) substrates by ion beam sputter deposition (IBSD) in reactive assistance of N+/N2+ ions to unravel the compositional var…
Invoking forbidden modes in SnO_2 nanoparticles using tip enhanced Raman spectroscopy
Venkataramana Bonu, A. Das, A. K. Sivadasan +2
Raman forbidden modes and surface defect related Raman features in SnO_2 nanostructures carry information about disorder and surface defects which strongly influence important tech…
Surface functionalization enhanced magnetism in SnO_2 nanoparticles and its correlation to photoluminescence properties
Venkataramana Bonu, Arindam Das, Manas Sardar +2
High value of magnetic moment 0.08 emu/g at room temperature for SnO_2 nanoparticles (NPs) was observed. Surface functionalization with octadecyltrichlorosilane (OTS) enhanced the…