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Category: Electrical Engineering

Discovery leads to promising new materials for converting waste heat to power — ScienceDaily

The promise of thermoelectric materials as a source of clean energy has driven the search for materials that can efficiently produce substantial amounts of power from waste heat. Researchers reported a major step forward Friday, publishing in Science Advances the discovery of a new explanation for asymmetrical thermoelectric performance, the phenomenon that occurs when a material that is highly efficient in a form which carries a positive charge is far less efficient in the form which carries a negative charge,…

A device emerges from the fusion of IGZO and ferroelectric-HfO2

(a) Schematic of ferroelectric-HfO2 based FeFET with 3D vertical stack structure for high memory capacity. Poly-silicon is typically used as a channel material. In this work, we propose to use IGZO as a channel material. (b) Schematic illustration of current challenges of poly-silicon channel and possible solution by IGZO channel. Poly-silicon has low mobility in nanometer thickness region and forms low-k interfacial layer which causes voltage loss and charge trapping. As a part of JST PRESTO program, Associate professor Masaharu…

Drones for early detection of forest fires

Credit: CC0 Public Domain The UC3M’s researchers coordinating the scientific part of the project, Fernando García y Abdulla al-Kaff, from the Department of Systems Engineering and Automation, have developed the complete automatic flight system, as well as the interface with which the emergency service can access information about what is occurring in real time. “The drone we have developed for the project has a thermal camera, an optical camera, and four sensors which allow us to identify the temperature of…

Wind tunnel tests could help kites become a clean energy high-flier

Credit: CC0 Public Domain The use of kites to capture wind energy and turn it into cost-effective ‘green’ electricity could be coming within reach, with EPSRC-funded research at Imperial College London playing an important role in making it possible. Linked to a wider Innovate UK-funded project, a team at Imperial’s Department of Aeronautics has put a kite-energy device through its paces using a wind tunnel that is part of the EPSRC-supported National Wind Tunnel Facility (NWTF). The data produced has…

Clarifying the economic value of adjusting power consumption

Credit: CC0 Public Domain Since the output of renewable energy such as photovoltaic generation tends to fluctuate, the power system can be viewed as a large-scale complex system with uncertainty. To stabilize the balance of supply and demand of electricity, we need an energy management system to control this. In recent years, energy management systems have been actively researched against the background of the liberalization of power and the spread of smart meters that visualize the power consumption. Koichi Kobayashi,…

Researchers create soft, flexible materials with enhanced properties — ScienceDaily

A team of polymer chemists and engineers from Carnegie Mellon University have developed a new methodology that can be used to create a class of stretchable polymer composites with enhanced electrical and thermal properties. These materials are promising candidates for use in soft robotics, self-healing electronics and medical devices. The results are published in the May 20 issue of Nature Nanotechnology. In the study, the researchers combined their expertise in foundational science and engineering to devise a method that uniformly…

Scientists develop material that can drive mechanical systems — ScienceDaily

New research from the laboratory of Ozgur Sahin, associate professor of biological sciences and physics at Columbia University, shows that materials can be fabricated to create soft actuators — devices that convert energy into physical motion — that are strong and flexible, and, most important, resistant to water damage. “There’s a growing trend of making anything we interact with and touch from materials that are dynamic and responsive to the environment,” Sahin says. “We found a way to develop a…

Electric field-based dressing helps heal wound infections — ScienceDaily

Researchers at Indiana University School of Medicine have found a way to charge up the fight against bacterial infections using electricity. Work conducted in the laboratories of the Indiana Center for Regenerative Medicine and Engineering, Chandan Sen, PhD and Sashwati Roy, PhD has led to the development of a dressing that uses an electric field to disrupt biofilm infection. Their findings were recently published in the journal Annals of Surgery. Bacterial biofilms are thin, slimy films of bacteria that form…

Algorithm stitches multiple datasets into a single ‘panorama,’ which could provide new insights for medical and biological studies. — ScienceDaily

A new algorithm developed by MIT researchers takes cues from panoramic photography to merge massive, diverse cell datasets into a single source that can be used for medical and biological studies. Single-cell datasets profile the gene expressions of human cells — such as a neurons, muscles, and immune cells — to gain insight into human health and treating disease. Datasets are produced by a range of labs and technologies, and contain extremely diverse cell types. Combining these datasets into a…

Smart pill bottle keeps drugs safe

A flexible computer inside a medication bottle can send wireless SMS messages when someone attempts to tamper with it. Credit: Muhammad M. Hussain Low-cost, stretchy sensors can be assembled inside the lid of a drug container to help monitor patient safety. A smart pill bottle that sends wireless alerts when it detects tampering, overdose or unsafe storage conditions is just one of many potential health applications for new sensor technology being developed by a team at KAUST. Digital technology offers…