Manufacturing Bits: Dec. 6


China’s rare earth power play Rare earth elements (REEs) are back in the news. China, the world’s largest supplier of rare earths, plans to combine three domestic vendors to create a large state-owned company with a nearly 70% share of the REE market, according to reports from Nikkei and others. In 2020, China in total accounted for 85% of global production of refined REEs, accordi... » read more

Power/Performance Bits: Nov. 16


Light-emitting memory Researchers from Kyushu University and National Taiwan Normal University propose a 'light-emitting memory' based on a perovskite that can simultaneously store and visually transmit data. The team used the idea in conjunction with resistive RAM (RRAM), in which states of high and low resistance represent ones and zeros. "The electrical measurements needed to check the r... » read more

Power/Performance Bits: Oct. 26


Printing circuits on irregular shapes Researchers at Pennsylvania State University propose a way to print biodegradable circuits on irregular, complex shapes. “We are trying to enable direct fabrication of circuits on freeform, 3-D geometries,” said Huanyu “Larry” Cheng, professor in Penn State's Department of Engineering Science and Mechanics (ESM). “Printing on complicated objec... » read more

A quantitative model for the bipolar amplification effect: A new method to determine semiconductor/oxide interface state densities


Abstract "We report on a model for the bipolar amplification effect (BAE), which enables defect density measurements utilizing BAE in metal–oxide–semiconductor field-effect transistors. BAE is an electrically detected magnetic resonance (EDMR) technique, which has recently been utilized for defect identification because of the improved EDMR sensitivity and selectivity to interface defects.... » read more

Graphene-based PUFs that are reconfigurable and resilient to ML attacks


Researchers at Pennsylvania State University propose using graphene to create physically unclonable functions (PUFs) that are energy efficient, scalable, and secure against AI attacks. Abstract "Graphene has a range of properties that makes it suitable for building devices for the Internet of Things. However, the deployment of such devices will also likely require the development of s... » read more

Power/Performance Bits: July 27


Amplifying light for lidar Engineers at University of Texas at Austin and University of Virginia developed a light detector that can amplify weak light signals and reduce noise to improve the accuracy of lidar. "Autonomous vehicles send out laser signals that bounce off objects to tell you how far away you are. Not much light comes back, so if your detector is putting out more noise than th... » read more

Power/Performance Bits: July 13


Graphene PUFs Researchers at Pennsylvania State University propose using graphene to create physically unclonable functions (PUFs) that are energy efficient, scalable, and secure against AI attacks. The team first fabricated nearly 2,000 identical graphene transistors. Despite their structural similarity, the transistors' electrical conductivity varied due to the inherent randomness arising... » read more

Power/Performance Bits: June 7


Commercializing photonic MEMS Researchers from the University of California Berkeley, Daegu Gyeongbuk Institute of Science & Technology, SUSS MicroOptics, TSI Semiconductors, Gwangju Institute of Science and Technology, KAIST, Ecole Polytechnique Fédérale de Lausanne (EPFL), and Korea Polytechnic University demonstrated a path for commercial fabrication of photonic MEMS. Photonic MEMS... » read more

Power/Performance Bits: April 27


Energy-harvesting shirt Engineers at the University of California San Diego developed a 'wearable microgrid' that harvests and stores energy from the human body to power small electronics. The microgrid consists of three main parts: sweat-powered biofuel cells, motion-powered triboelectric generators, and energy-storing supercapacitors. All parts are flexible, washable and can be screen pri... » read more

Power/Performance Bits: March 2


Fast-charging EV battery Electric vehicle adoption faces challenges from consumers' range anxiety and the extended lengths of time needed to charge a car's battery. Researchers at Pennsylvania State University are trying to address this by developing lithium iron phosphate EV batteries that have a range of 250 miles with the ability to charge in 10 minutes. It also is expected to have a lifeti... » read more

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