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Metasurface Colloidal Quantum Dot Photodetectors


Abstract: "Efficient photodetectors that can be easily engineered for a specific spectral window are of high interest. Here, we report on the design, fabrication, and characterization of metasurface-enhanced photodetectors and photodiodes using colloidal quantum dots. We fabricate photoconductors optimized for the wavelength range around 1550 nm featuring responsivities of up to 8000 A/W wit... » read more

Recent Advances in Thermal Metamaterials and Their Future Applications for Electronics Packaging


Abstract: "Thermal metamaterials exhibit thermal properties that do not exist in nature but can be rationally designed to offer unique capabilities of controlling heat transfer. Recent advances have demonstrated successful manipulation of conductive heat transfer and led to novel heat guiding structures such as thermal cloaks, concentrators, etc. These advances imply new opportunities to gui... » read more

What’s After 5G


This year’s IEEE Symposia on VLSI Technology and Circuits (VLSI 2020) included a presentation by NTT Docomo that looked far into the future of cellular communications, setting the stage for a broad industry shift in communication. This is far from trivial. 5G only just recently entered the commercial world, and — especially with the higher millimeter-wave (mmWave) frequencies — it has ... » read more

Manufacturing Bits: May 21


World’s loudest underwater sound A group of researchers hit tiny jets of water with a high-power X-ray laser, creating a record for the world’s loudest underwater sound. The intensity of the blast resulted in an underwater sound with an intensity greater than 270 decibels (dB). That’s greater than the intensity of a rocket launch or equivalent of creating electrical power for a city o... » read more

System Bits: April 8


Computers trained to design materials Researchers in the University of Missouri’s College of Engineering are applying deep learning technology to educate high-performance computers in the field of materials science, with the goal of having those computers design billions of potential materials. “You can train a computer to do what it would take many years for people to otherwise do,” ... » read more

Power/Performance Bits: June 7


Tiny lasers on silicon A group of scientists from Hong Kong University of Science and Technology, the University of California, Santa Barbara, Sandia National Laboratories, and Harvard University were able to fabricate tiny lasers directly on silicon. To do this, they first had to resolve silicon crystal lattice defects to a point where the cavities were essentially equivalent to those gr... » read more

Power/Performance Bits: Jan. 6


3D nanoshaping A team of researchers led by Purdue University report they’ve developed a method for creating large-area patterns of 3D nanoshapes from metal sheets. They believe this represents a potential manufacturing system to inexpensively mass produce innovations such as "plasmonic metamaterials" for advanced technologies, and could enable high-speed electronics, advanced sensors and so... » read more

Power/Performance Bits: Dec. 10


Optical Metamaterial with a Refractive Index of Zero Most of the time we hear about the need for coherent light sources, such as those produced by lasers, but there may be equal promise looking in the other direction. Quantum processors promise to be many times faster and more powerful than today’s supercomputers, but to get to that point they will need fast and efficient multi-directiona... » read more

System Bits Nov 26


Scaling The Quantum Slopes Like any task, there are easy and hard ways to control atoms and molecules as quantum systems, which are driven by tailored radiation fields. More efficient methods for manipulating quantum systems could help scientists realize the next generation of technology by harnessing atoms and molecules to create small but incredibly powerful devices, such as molecular electr... » read more

Manufacturing Bits: Oct. 15


Better Beer Rice University has devised a polymer material that could boost the properties of natural gas, beer and soda. By adding modified, single-atom-thick graphene nanoribbons (GNRs) to thermoplastic polyurethane (TPU), Rice’s polymer material could make it more practical for vehicles to run on compressed natural gas. The material is far more impermeable to pressurized gas and lighte... » read more