179 citations · 949 across the 23 of their papers we have counts for
24 papers
A Single Sensor Based Multispectral Imaging Camera using a Narrow Spectral Band Colour Mosaic Integrated on the Monochrome CMOS Image Sensor
Xin He, Yajing Liu, Kumar Ganesan +8
A multispectral image camera captures image data within specific wavelength ranges in narrow wavelength bands across the electromagnetic spectrum. Images from a multispectral camer…
Feasibility Assessment of an Optically Powered Digital Retinal Prosthesis Architecture for Retinal Ganglion Cell Stimulation
William Lemaire, Maher Benhouria, Konin Koua +12
Clinical trials previously demonstrated the notable capacity to elicit visual percepts in blind patients affected with retinal diseases by electrically stimulating the remaining ne…
Structural, optical and mechanical properties of Y2Ti2O7 single crystal
M. Suganya, K. Ganesan, P. Vijayakumar +3
We report on the growth of Y2Ti2O7 single crystals by optical floating zone technique. X-ray diffraction and Raman spectroscopy studies confirm the structural quality of the crysta…
Structural and optical properties of beta irradiated YAlO3 single crystals
M. Suganya, K. Ganesan, P. Vijayakumar +6
We report on the growth, structural and optical properties of YAlO3 single crystals grown by optical floating zone technique. Powder X-ray diffraction and Raman spectroscopic studi…
Structural, Raman and photoluminescence studies on nanocrystalline diamond films: Effects of ammonia in feedstock
K. Ganesan, P. K. Ajikumar, S. K. Srivatava +1
Herein, we report on the improvement of structural quality and enhancement of photoluminescence (PL) emission for an optimally N doped nanocrystalline diamond (NCD) film. Pure and…
Anisotropic three-dimensional weak localization in ultrananocrystalline diamond films with nitrogen inclusions
L. H. Willems van Beveren, D. L. Creedon, N. Eikenberg +6
We present a study of the structural and electronic properties of ultra-nanocrystalline diamond films that were modified by adding nitrogen to the gas mixture during chemical vapou…
Photonic devices fabricated from (111) oriented single crystal diamond
Blake Regan, Sejeong Kim, Anh Tu Huy Ly +5
Diamond is a material of choice in the pursuit of integrated quantum photonic technologies. So far, the majority of photonic devices fabricated from diamond, are made from (100)-or…
Role of microstructure and structural disorder on tribological properties of polycrystalline diamond films
P. K. Ajikumar, K. Ganesan, N. Kumar +3
Polycrystalline diamond films with systematic change in microstructure that varies from microcrystalline to nanocrystalline structure are synthesized on Si by hot filament chemical…
Si and N - vacancy color centers in discrete diamond nanoparticles: Raman and fluorescence spectroscopic studies
K. Ganesan, P. K. Ajikumar, S. Ilango +2
The present study reports on an innovative method to prepare discrete diamond nanoparticles or nanodiamonds (NDs) with high structural and optical quality through top-down approach…
Irradiation induced modification of the superconducting properties of heavily boron doped diamond
Daniel Creedon, Yi Jiang, Kumaravelu Ganesan +7
Diamond, a wide band-gap semiconductor, can be engineered to exhibit superconductivity when doped heavily with boron. The phenomena has been demonstrated in samples grown by chemic…
Single crystal diamond membranes containing germanium vacancy color centers
Kerem Bray, Blake Regan, Aleksandra Trycz +6
Single crystal diamond membranes that host optically active emitters are highly attractive components for integrated quantum nanophotonics. In this work we demonstrate bottom-up sy…
Single crystal diamond membranes for nanoelectronics
K. Bray, H. Kato, R. Previdi +8
Single crystal, nanoscale diamond membranes are highly sought after for a variety of applications including nanophotonics, nanoelectronics and quantum information science. However,…
Flipping growth orientation of nanographitic structures by plasma enhanced chemical vapor deposition
Subrata Ghosh, K. Ganesan, S. R. Polaki +5
Nanographitic structures (NGSs) with multitude of morphological features are grown on SiO2/Si substrates by electron cyclotron resonance - plasma enhanced chemical vapor deposition…
The role of substrate bias and nitrogen doping on the structural evolution and local elastic modulus of diamond-like carbon films
S. R. Polaki, K. Ganesan, S. K. Srivastava +2
Diamond-like carbon (DLC) films are synthesized on Si using plasma enhanced chemical vapor deposition. The role of substrate bias and nitrogen doping on the structural evolution an…
Nanomechanical sensing using spins in diamond
Michael S. J. Barson, Phani Peddibhotla, Preeti Ovartchaiyapong +15
Nanomechanical sensors and quantum nanosensors are two rapidly developing technologies that have diverse interdisciplinary applications in biological and chemical analysis and micr…
An upper limit on the lateral vacancy diffusion length in diamond
J. O. Orwa, K. Ganesan, J. Newnham +9
Ion implantation is widely used to modify the structural, electrical and optical properties of materials. By appropriate masking, this technique can be used to define nano- and mic…
A comparative study on defect estimation using XPS and Raman spectroscopy in few layer nanographitic structures
K. Ganesan, Subrata Ghosh, Nanda Gopala Krishna +3
Defects in planar and vertically oriented nanographitic structures (NGSs) synthesized by plasma enhanced chemical vapor deposition (PECVD) has been investigated using Raman and X-r…
A route towards controlling the morphology of vertical graphene nanosheets
Subrata Ghosh, K. Ganesan, S. R. Polaki +1
Herein, an effort has given to sheds light on the effects of plasma process parameters on the growth of vertical graphene nanosheets (VGNs) by plasma enhanced chemical vapor deposi…
Magneto-optical imaging of thin magnetic films using spins in diamond
David A. Simpson, Jean-Philippe Tetienne, Julia McCoey +5
Imaging the fields of magnetic materials provides crucial insight into the physical and chemical processes surrounding magnetism, and has been a key ingredient in the spectacular d…
Evolution and defect analysis of vertical graphene nanosheets
Subrata Ghosh, K. Ganesan, Shyamal R. Polaki +4
We report catalyst-free direct synthesis of vertical graphene nanosheets (VGNs) on SiO2/Si and quartz substrates using microwave electron cyclotron resonance - plasma enhanced chem…
Low temperature transport on surface conducting diamond
Mark T. Edmonds, Laurens H. Willems van Beveren, Kumar Ganesan +6
Magneto-transport measurements were performed on surface conducting hydrogen-terminated diamond (100) hall bars at temperatures between 0.1-5 K in magnetic fields up to 8T.
Fabrication and Investigation of Nitrogen doped Ultra-Nano-Crystalline Diamond Hall-bar Devices
Nina Eikenberg, Kumar Ganesan, Kin Kiong Lee +3
Using microwave-assisted plasma chemical vapour deposition (CVD) a layer of Nitrogen doped ultra-nano-crystalline diamond (N-UNCD) is deposited on top of a non-conducting diamond l…
Ambient Nanoscale Sensing with Single Spins Using Quantum Decoherence
L. P. McGuinness, L. T. Hall, A. Stacey +11
Magnetic resonance detection is one of the most important tools used in life-sciences today. However, as the technique detects the magnetization of large ensembles of spins it is f…
Dynamic stabilization of the optical resonances of single nitrogen-vacancy centers in diamond
V. M. Acosta, C. Santori, A. Faraon +9
We report electrical tuning by the Stark effect of the excited-state structure of single nitrogen-vacancy (NV) centers located less than ~100 nm from the diamond surface. The zero-…