ASSISTANT PROFESSOR
OF
ELECTRONICS AND ELECTRICAL ENGINEERING
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Indian Institute of Technology Guwahati
Dr. Debabrata Sikdar
PhD, ME, MSc, BE
Major Press Releases / Media Buzz
‘Plasmene: Artificial Graphene’ in
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Gold origami exerts strange power over light
“That amazed me,” says Michael Cortie at the University of Technology Sydney in Australia. The bendy material may also find uses in medical materials and wearable technology.
Giant Plasmene Nanosheets, Nanoribbons, and Origami could lead to new optical effects like invisibility cloaks
"Sheets of gold one nano-particle thick have been folded into tiny origami. Dubbed plasmene, the material has some of the weirdest optical properties around. It could someday enable things like invisibility cloaks and super-efficient solar cells."
Ultra-thin Plasmene offers new scope for sensing devices and nano electronics​
"...this folding ability will be useful for future optoelectronics. As Plasmene is cost effective to make, this could see the development of a range of cheap, new, nanoscale electronic devices."
‘Lossless directional nanoantenna’ in
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AIP News - American Institute of Physics
Optical Nanoantennas Set the Stage for a NEMS Lab-on-a-Chip Revolution
"New research shows how cubic nanostructures made of insulating materials overcome the heating, fabrication and intensity challenges of nanonantenna technology, paving the way for NEMS applications in biomedicine, nanolasers and photovoltaics."
Cubic Nanoantennas Eyed for NEMS Biosensors
"Analogous to nanoscale spotlights, the cubic antennas focus light with precise control over direction and beam width"
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Indian Along with Australian Researchers Invents Nano Optical Antennas
"The newly developed tiny optical antennas function like spotlights at the nanoscale."
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Australian researchers among Indian invent key tiny optical antennas
"The new cubic antennas are envisioned for 'laboratories-on -a- chip' applications."
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​Aus researchers among Indian invent key tiny optical antenna
"Three researchers including an Indian student in Australia have invented tiny optical antennas which offer the potential to measure food safety,identify air pollutants and treat deadly diseases like cancer."
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"They can also potentially replace the lossy on-chip IC (integrated circuit) interconnects, via transmitting optical signals within and among ICs, to ensure ultrafast data processing while minimising device heating."
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"The cubic antennas focus light with precise control over direction and beam width"
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OSA Optics & Photonics News
Optical Nanoantennas Square Up the Light​
"As the old saying goes, you can't fit a square peg into a round hole. Passing a beam of light through a square—or cubic— antenna may, however, improve the performance of future “labs on a chip” for biomedical applications."
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Steerable optical nanoantennas light the way for practical lab-on- a-chip devices
"Apart from the nanoscale light being used as an illumination source in microfluidic analysis, it may also find use in other NEMS mechanisms being developed, such as in the minute deflection registers of ultra-sensitive force detectors or even providing the motivation for light-powered spinning devices to drive these micro- machines."
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Optical nanocubes have utility in biosensors​
"The "nanocubes" direct an ultra-narrow beam of light where it is needed, with little or no loss due to heating and scattering."
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New Cubic Nanoantennas Hold Potential to Revolutionize Nano- Electromechanical Systems
"Newly developed tiny antennas, likened to spotlights on the nanoscale, offer the potential to measure food safety, identify pollutants in the air and even quickly diagnose and treat cancer"
"The cubes, composed of insulating, rather than conducting or semiconducting materials as were the spherical versions, are easier to fabricate as well as more effective"
Cubic nanoantennas (nanocubes) efficiently direct light
“Their nanofocusing capability even has applications in futuristic high-density 5D optical data storage, where data can be manipulated by selectively focusing light into a small portion of the memory elements, or these nanocubes can serve as ‘optical vias’ providing interlayer connectivity between 3D-integrated multicore ICs of the future, replacing the lossy interconnects to ensure ultrafast loss-less computing.”
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‘Electrotunable plasmonic window/mirror’
in
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Now you see this nanoplasmonic mirror. Now you don’t.
“A tunable assembly of gold nanoparticles can go from reflective to transparent with the flip of a switch….”
Nanoparticles Shift From Mirror to Window
“Single-layer nanoparticles are enabling researchers to convert mirrors into windows and vice versa….”
Self-assembling nanoparticle arrays can switch between a mirror and a window
“By finely tuning the distance between nanoparticles in a single layer, researchers have made a filter that can change between a mirror and a window….”
Scientists Used Nanoparticles to Turn a Window Into a Mirror and Back Again
“For the first time, a reversible nanoparticle array can transition between a window and a mirror…”
Nanoparticles turn a clear window into a mirror and back again
“Creating a material that can alter its optical properties in real time has proved challenging for scientists, but a team at Imperial College London has finally achieved a major breakthrough by developing a material that can transition from clear to…”
New Tunable Nanoparticle Layer can Switch Between a Mirror and Window
“Researchers have made a filter capable of changing between a window and a mirror by finely tuning the distance between nanoparticles in a single layer…”
Tunable Nanoparticle Layer Switches Between a ‘Mirror’ and a ‘Window’
“Researchers have made a reversible electrotunable filter that can change between a reflective ‘mirror’ and a transmissive ‘window’….”
Wonder material that switches from being a mirror to a window devised by scientists
“Researchers from Imperial College London (ICL) have developed a new technique which causes a special material to change from being reflective, like a mirror, to becoming see-through, like a window…”
Wonder material that switches from being a mirror to a window devised by scientists
“…The development could enable scientists to develop technology whose optical properties can be manipulated in real-time…”
Self-assembling gold nanoparticles
“Scientists have created a 'wonder material' that changes between being a mirror and a window….”
Gold nanoparticles form mirror that can be switched on and off
“Metamaterial device reversibly changes its optical properties in response to voltage changes Depending on whether the device is in a window state or a mirror state….”
Gold nanoparticles turn mirrors into windows at the touch of a switch
“By using electrical current to change the spacing of a layer of floating nanoparticles, researchers can change its reflectivity at will…”
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