An international team led by University of Toronto physicists has developed a simple new technique using Scotch poster tape that has enabled them to induce high-temperature superconductivity in a semiconductor for the first time. The method paves the way for novel new devices that could be used in quantum computing and to improve energy efficiency.
Scientists at the Norwegian University of Science and Technology report they have patented and are commercializing gallium arsenide (GaAs) nanowires grown on graphene. These semiconductors, which are being developed for market by the the company CrayoNano, are grown on atomically-thin graphene using molecular beam epitaxy.
An international research collaboration led by scientists in the U.K. has developed a new approach to quantum computing that could lead more widespread use of new quantum technologies. The breakthrough has been a move from glass-based circuitry that allowed circuits to manipulate photons to a silicon-based technology that accomplishes the same calculations using quantum mechanical effects.
On Tuesday IBM introduced a new line of mainframe computers the company calls its most powerful and technologically advanced ever. The zEnterprise EC12 mainframe server is designed to help users securely and quickly sift through massive amounts of data. Running at 5.5 GHz, IBM said the microprocessor that powers the mainframe is the fastest chip in the world.
A research team at the University of Santa Barbara has designed and fabricated a quantum processor capable of factoring a composite number—in this case the number 15—into its constituent prime factors, 3 and 5. Although modest compared to, say, a 600-digit number, the algorithm they developed was right about half the time, matching theoretical predictions and marking a milestone on the trail of building a stronger quantum computer.
Films made of semiconductor nanocrystals are seen as a promising new material for a wide range of applications. The size of a semiconductor nanocrystal determines its electrical and optical properties. But it's hard to control the placement of nanocrystals on a surface in order to make structurally uniform films. Now, researchers at Massachusetts Institute of Technology say they have found ways of making defect-free patterns of nanocrystal films where the shape and position of the films are controlled with nanoscale resolution.
If recent research in Italy is an indication, the next generation of computing could be performed with silicene, an atomically thin form of silicon. The silicene structure consists of one atomic layer of silicon atoms and in this way it is analogous to graphene. With silicene, however, no modification is necessary to create a bandgap.
A group of Massachusetts Institute of Technology engineers has discovered a way of making perfectly ordered and repeatable surfaces with patterns of microscale wrinkles. The method involves chemical vapor deposition of a layer onto a stretched silicon-polymer substrate. When tension is released first one way, then the other, a perfectly ordered wrinkled pattern emerges.
R&D laboratories take on challenges of terrorism, energy, and communications in the new millennium.
Lawrence Berkeley National Laboratory researchers have developed a technology that enables low-cost, high-efficiency solar cells to be made from virtually any semiconductor material. This opens the door to the use of plentiful, relatively inexpensive semiconductors previously considered unsuitable for photovoltaics.
A new semiconductor laser device, the smallest ever built, was created at the University of Texas at Austin and is constructed of a gallium nitride nanorod that is partially filled with indium gallium nitride. Operating below the 3D diffraction limit, the nanolaser emits a green light that is too small to be visible to the naked eye.
A new manufacturing process called “micropunching” lithography can be used to create lightweight, low-cost, and flexible polymer-based devices, such as sensors, actuators, or even a cellular telephone. According to its inventor, the technique has the potential to replace silicon-based materials commonly used in computers and other electronic devices.
Researchers in National Physical Laboratory's Quantum Detection Group have demonstrated, for the first time, a monolithic 3D ion microtrap array which could be scaled up to handle several tens of ion-based quantum bits. The research shows how it is possible to realize this device embedded in a semiconductor chip, and demonstrates the device's ability to confine individual ions at the nanoscale.
Though smartphones and tablets are hailed as the hardware of the future, their present-day incarnations have some flaws. Most notoriously, low RAM memory limits the number of applications that can be run at one time and quickly consumes battery power. Researchers in Israel have used carbon molecules to build a sophisticated memory transistor that can both transfer and store energy, eliminating the need for a capacitor.
With the placement of a sheet of graphene, researchers at Columbia University have transformed an originally passive photonic integrated circuit into an active generator of microwave photonic signals. The device performs parametric wavelength conversion at telecommunication wavelengths, offering a glimpse at communications using very little power.
Materials experts in Japan have recently developed an advanced self-assembling technology for semiconductor quantum dots called droplet epitaxy. This method has produced quantum dots with the world’s highest surface density, greatly exceeding the previously reported value.
As electronic devices get smaller, they are becoming more vulnerable to contamination through the presence of impurities. Using a Fourier transform infrared (FT-IR) microscope such as Bruker Optics’ LUMOS, contaminations in the low micrometer range can be identified. In this white paper, Bruker demonstrates how FT-IR can be used to determine surface contamination on the soldering contact of a surface mounted device.
Soitec and Chongqing Silian Optoelectronics Science & Technology Co. Ltd. have partnered to jointly develop gallium nitride (GaN) template wafers using hydride vapor phase epitaxy (HVPE). The resulting GaN template wafers present cost savings in manufacturing light-emitting diodes.
TEL NEXX Inc., a wholly owned subsidiary of Tokyo Electron U.S. Holdings, has announced a new multi-year joint development program in 3D semiconductor packaging with IBM. The program focuses on meeting IBM's rigorous technology requirements through its partners in the Semiconductor Research and Development Alliance.
One bit of digital information stored on a hard disk currently consists of about 3 million magnetic atoms. Researchers in Germany and Japan have now developed a magnetic memory with one bit per molecule. Using an electric pulse deliver by atomic force microscopy, the metal-organic molecule can be switched reliably between a conductive, magnetic state and a low-conductive, non-magnetic state.
Memory-chip maker Micron Technology Inc. has agreed to buy Elpida Memory Inc. for approximately $750 million in cash in a deal that would boost its wafer manufacturing capacity by about 50%. Elpida specializes in dynamic random access memory chips used in mobile phones and computers, and has been developing a plan of reorganization since filing for the largest manufacturing bankruptcy ever in Japan earlier this year.
Melanin could soon be the face of a new generation of biologically friendly electronic devices used in applications such as medical sensor and tissue stimulation treatments. An international team of scientists has published a study that, for the first time, gives insight into the electrical properties of this pigment and its biologically compatible "bioelectronic" features.
Long-time Japanese rivals Sony Corp. and Panasonic Corp. are working together to develop next-generation TV panels based on organic light-emitting diode technology. The move is a reversal of decades of rivalry as they try to catch up with South Korea's Samsung Electronics.
A drawing program and a 3D printer: These might be the only tools necessary for production of microstructures and nanostructures for devices and sensors of the future. With a new printed 3D silicon manufacturing technology, researchers at Sweden hope to greatly reduce the cost and complexity of creating these building blocks.
In the not-too-distant future, scientists may be able to use DNA to grow their own specialized materials, thanks to the concept of directed evolution. University of California, Santa Barbara scientists have, for the first time, used genetic engineering and molecular evolution to develop the enzymatic synthesis of a semiconductor.