A5013640474- Advanced Materials Characterization Techniques
- High Temperature Alloys and Creep
- Intermetallics and Advanced Alloy Properties
- Advancements in Battery Materials
- Aluminum Alloy Microstructure Properties
- High-Temperature Coating Behaviors
- Microstructure and mechanical properties
- Electronic and Structural Properties of Oxides
- Aluminum Alloys Composites Properties
- Magnetic Properties and Synthesis of Ferrites
- Solar Thermal and Photovoltaic Systems
- Electron and X-Ray Spectroscopy Techniques
- Semiconductor materials and devices
- Ion-surface interactions and analysis
- Anodic Oxide Films and Nanostructures
- Advanced Thermoelectric Materials and Devices
- Magnetic Properties and Applications
- Phase Change Materials Research
- Advanced Battery Materials and Technologies
- Graphene research and applications
- Electrodeposition and Electroless Coatings
- Electromagnetic wave absorption materials
- Advancements in Solid Oxide Fuel Cells
- Electronic Packaging and Soldering Technologies
- Nanoporous metals and alloys
Indian Institute of Science Bangalore
2014-2024
Max-Planck-Institut für Nachhaltige Materialien
2022-2024
Bangalore University
2015
New York Blood Center
2015
Himachal Pradesh University
2011
Punjabi University
2008
Agricultural Research Service
2007
United States Department of Agriculture
2007
Purdue University West Lafayette
1968
Two unique materials were developed, like graphene oxide (GO) sheets covalently grafted on to barium titanate (BT) nanoparticles and cobalt nanowires (Co-NWs), attenuate the electromagnetic (EM) radiations in poly(vinylidene fluoride) (PVDF)-based composites. The rationale behind using either a ferroelectric or ferromagnetic material combination with intrinsically conducting (multiwall carbon nanotubes, CNTs), is induce both electrical magnetic dipoles system. key properties, namely,...
Synthesis and electrochemical properties of highly corrosion resistant Zn–graphene composite coating.
Repeatable and reliable site-specific preparation of specimens for atom probe tomography (APT) at cryogenic temperatures has proven challenging. A generalized workflow is required specimen including lift-out via focused ion beam in situ deposition capping layers, to strengthen that will be exposed high electric field stresses during evaporation APT protect them from environment transfer into the probe. Here, we build on existing protocols showcase analysis a variety metals, oxides, supported...
Atom probe tomography requires needle-shaped specimens with a diameter typically below 100 nm, making them both very fragile and reactive, defects (notches at grain boundaries or precipitates) are known to affect the yield data quality. The use of conformal coating directly on sharpened specimen has been proposed increase reduce background. However, date, these coatings have applied ex situ mostly not uniform. Here, we report controlled focused-ion beam in deposition thin metal film...
Carbon fibres in structural batteries are multifunctional by acting both as reinforcement and lithium (Li)-ion battery electrode. The relationship between the microstructure mechanical capabilities of carbon well established, but much remains unexplored regarding their electrochemical properties. Specifically needed is a nanoscale understanding how Li atoms distribute interact fibres. Atom probe tomography (APT) uniquely positioned to provide subnanometre resolution three dimensions....
Co base superalloys strengthened by coherent L1 2 ordered γ′ precipitate in a disordered face-centered cubic γ matrix represent new opportunity for high-temperature alloy development. The emergence of alloys with low density and high specific yield strength at elevated temperatures has further energized the research development efforts last 5 years. Initially stabilized addition small amounts Nb Ta, these generations multiple alloying additions to form basic quaternary ternary have steadily...
Carbon nanotubes have been explored in various fields of science and technology due to their unique properties. However, toxic nature put limitations its consideration for the bio-medical applications. In our work, we report synthesis paramagnetic CNT/Gd2O3 hybrid nanostructures through easily scalable electrochemical deposition technique. The nanostructure has shown significant longitudinal relaxivity 18.93 mM−1s−1 water protons indicating possibility be used as an MRI contrast agent....
Through its capability for 3D mapping of Li at the nanoscale, atom probe tomography (APT) is poised to play a key role in understanding microstructural degradation lithium-ion batteries (LIB) during successive charge and discharge cycles. However, APT application materials LIB plagued by field induced delithiation (deintercalation) Li-ions analysis itself that prevents precise assessment distribution. Here, we showcase how thin Cr-coating, in-situ formed on specimens NMC811 focused-ion beam...
Abstract Through its capability for 3D mapping of Li at the nanoscale, atom probe tomography (APT) is poised to play a key role in understanding microstructural degradation lithium‐ion batteries (LIB) during successive charge‐ and discharge cycles. However, APT application materials LIB plagued by field induced delithiation (deintercalation) Li‐ions analysis itself that prevents precise assessment distribution. Here, we showcase how thin Cr‐coating, in‐situ formed on specimens NMC811...
Abstract The development of sustainable transportation and communication systems requires an increase in both energy density capacity retention Li‐batteries. Using substrates forming a solid solution with body‐centered cubic Li enhances the cycle stability anode‐less batteries. However, it remains unclear how substrate microstructure affects lithiation behavior. Here, correlative, near‐atomic scale probing approach is deployed through combined ion‐ electron‐microscopy to examine distribution...
Abstract Solar selective coating with good thermal stability is the primary requirement for a concentrated solar power (CSP) plant to function better photothermal efficiency. In recent years, ultra‐high‐temperature ceramic‐based coatings have been explored as potential materials coatings. this context, NbB 2 /Nb(BN)/Al O 3 tandem absorber was designed be fabricated on stainless‐steel substrate by radio frequency magnetron sputtering of spark plasma sintered ceramic target. bulk form,...