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The comparative defect study on the polymeric transfer of MoS2 monolayers
C. Abinash Bhuyan, Kishore K. Madapu, Sandip Dhara
The defect-free transfer of chemical vapour deposition (CVD) grown monolayer MoS2 is important for both fabrication of 2D devices and fundamental point of view for various studies…
Role of polarized tip-enhanced Raman spectroscopy in the enhancement of interface optical phonon modes in AlGaN multi-quantum wells
A. K. Sivadasan, Prajit Dhara, Chirantan Singha +5
Group III nitride based two-dimensional multi-quantum well (MQW) nanostructures find remarkable applications in the visible to ultraviolet light sources. The interface optical (IFO…
Surface enhanced Raman spectroscopy using 2D plasmons of InN nanostructures
Kishore K. Madapu, Sandip Dhara
We explored the surface enhanced Raman scattering (SERS) activity of the InN nanostructures, possessing surface electron accumulation (SEA), using the Rhodamine 6G (R6G) molecules.…
In-situ formation of SiGe alloy by electron beam evaporation and the effect of post deposition annealing on the energy band gap
Twisha Tah, Ch. Kishan Singh, S. Amirthapandian +5
We report the synthesis of polycrystalline (poly)-SiGe alloy thin films through solid state reaction of Si/Ge multilayer thin films on Si and glass substrates at low temperature of…
Optical imaging of metallic and semiconductor nanostructures at sub wavelength regime
A. K. Sivadasan, Kishore K. Madapu, Prajit Dhara
The near field scanning optical microscopy (NSOM) is not only a tool for imaging of objects in the sub wavelength limit but also a prominent characteristic tool for understanding t…
Effect of Strain Relaxation and the Burstein-Moss Energy Shift on the Optical Properties of InN Films Grown in the Self-Seeded Catalytic Process
K. K. Madapu, S. Dhara
For the first time, high optical quality InN films were grown on sapphire substrate using atmospheric chemical vapour deposition technique in the temperature range of 560-650 oC. S…