User profiles for Rajkumar Patra

Rajkumar Patra

Institut für Festkörperphysik, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
Verified email at uni-jena.de
Cited by 236

Vertically aligned cerium hexaboride nanorods with enhanced field emission properties

M Jha, R Patra, S Ghosh, AK Ganguli - Journal of Materials Chemistry, 2012 - pubs.rsc.org
Cerium hexaboride is a well-known material for the filaments of electron microscopes due to
its field emission properties (high brightness electron source) and its long service life. The …

Enhanced field emission from lanthanum hexaboride coated multiwalled carbon nanotubes: Correlation with physical properties

R Patra, S Ghosh, E Sheremet, M Jha… - Journal of Applied …, 2014 - pubs.aip.org
Detailed results from field emission studies of lanthanum hexaboride (LaB 6) coated multiwalled
carbon nanotube (MWCNT) films, pristine LaB 6 films, and pristine MWCNT films are …

Vertically aligned nanorods of lanthanum hexaboride with efficient field emission properties

M Jha, R Patra, S Ghosh, AK Ganguli - Solid state communications, 2013 - Elsevier
The present study describes a borothermal reduction process to obtain nanostructured
lanthanum hexaboride (LaB 6 ) particles and their films. The morphology (nanorods and …

High stability field emission from zinc oxide coated multiwalled carbon nanotube films

R Patra, S Ghosh, H Sharma… - Advanced Materials …, 2013 - aml.iaamonline.org
A comparative study of electron field emission (FE) property of pristine mutiwalled carbon
nanotubes (p-CNTs), zinc (Zn) coated CNTs (Zn-CNT), zinc oxide (ZnO) coated CNTs (ZnO-…

Novel borothermal route for the synthesis of lanthanum cerium hexaborides and their field emission properties

R Patra, S Ghosh, AK Ganguli - Journal of Solid State Chemistry, 2012 - Elsevier
The present study describes the development of a simple approach to stabilize polycrystalline
lanthanum cerium hexaborides without using any flux and at ambient pressure. The …

Enhanced field emission from cerium hexaboride coated multiwalled carbon nanotube composite films: A potential material for next generation electron sources

R Patra, S Ghosh, E Sheremet, M Jha… - Journal of Applied …, 2014 - pubs.aip.org
Intensified field emission (FE) current from temporally stable cerium hexaboride (CeB 6)
coated carbon nanotubes (CNTs) on Si substrate is reported aiming to propose the new …

Electroforming-free resistive switching in yttrium manganite thin films by cationic substitution

VR Rayapati, D Bürger, N Du, R Patra… - Journal of Applied …, 2019 - pubs.aip.org
We report unipolar resistive switching in polycrystalline, hexagonal yttrium manganite thin
films grown on unpatterned Pt metal coated SiO2/Si substrates with circular Al top electrodes. …

[HTML][HTML] Level-set based adaptive-active contour segmentation technique with long short-term memory for diabetic retinopathy classification

A Bhansali, R Patra, M Abouhawwash… - Frontiers in …, 2023 - ncbi.nlm.nih.gov
Diabetic Retinopathy (DR) is a major type of eye defect that is caused by abnormalities in
the blood vessels within the retinal tissue. Early detection by automatic approach using …

Assessment Methods of Cognitive Ability of Human Brains for Inborn Intelligence Potential Using Pattern Recognitions

R Raja, H Raja, RK Patra, K Mehta, A Gupta… - Biometric …, 2020 - books.google.com
This research aims to examine the scientific study related to fingerprint patterns and brains
lobes. Generally, this method is used to find and develop the inborn potential and personality …

Manipulating the anisotropy and field emission of lanthanum hexaboride nanorods

R Patra, S Ghosh, AK Ganguli - RSC advances, 2012 - pubs.rsc.org
The present study describes the controlled synthesis of lanthanum hexaboride nanostructures
with efficient field emission properties. The synthesis is mediated by a nanostructured …