/ en-us �鶹��Ժ internet news portal provides the latest news on science including: �鶹��Ժics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. In the development of big data and artificial intelligence, the usual data storage media are not sufficient. The next generation of data storage must meet the demand for high-density storage and energy efficiency. One such technology is resistive random-access memory (RRAM), which stores data through changes in resistance. /news/2023-09-exploring-storage-tomorrow-supramolecular-memristors.html Materials Science Thu, 28 Sep 2023 11:14:11 EDT news615118447 Obtaining useful work from random fluctuations in a system at thermal equilibrium has long been considered impossible. In fact, in the 1960s eminent American physicist Richard Feynman effectively shut down further inquiry after he argued in a series of lectures that Brownian motion, or the thermal motion of atoms, cannot perform useful work. /news/2023-08-scientists-nonlinear-circuit-harvest-power.html Nanomaterials Fri, 18 Aug 2023 05:12:25 EDT news611554336 An analysis of Twitter activity between March 1 and Aug. 1, 2020, found strong support by U.S. users for wearing face coverings and that a media focus on anti-mask opinions fueled the rhetoric of those opposed, report University of Oregon researchers. /news/2021-04-twitter-users-strongly-pandemic.html Social Sciences Thu, 29 Apr 2021 10:22:03 EDT news538910520 Electronic shirts that keep the wearer comfortably warm or cool, as well as medical fabrics that deliver drugs, monitor the condition of a wound and perform other tasks, may one day be manufactured more efficiently thanks to a key advance by Oregon State University researchers. /news/2020-11-key-advance-circuitry-wearable-fabrics.html Materials Science Thu, 12 Nov 2020 15:54:11 EST news524418847 A device that takes a novel approach to removing salt from water has been developed in Bath, paving the way for small, solar-powered desalination units /news/2020-02-harnassing-sun-fresh-remote-disaster-struck.html Materials Science Mon, 10 Feb 2020 09:11:51 EST news500548305 Spintronics or spin electronics in contrast to conventional electronics uses the spin of electrons for sensing, information storage, transport, and processing. Potential advantages are nonvolatility, increased data processing speed, decreased electric power consumption, and higher integration densities compared to conventional semiconductor devices. Molecular spintronics aims for the ultimate step towards miniaturization of spintronics by striving to actively control the spin states of individual molecules. Chemists and physicists at Kiel University joined forces with colleagues from France and Switzerland to design, deposit and operate single molecular spin switches on surfaces. The newly developed molecules feature stable spin states and do not lose their functionality upon adsorption on surfaces. They present their results in the current issue of Nature Nanotechnology. /news/2019-12-molecules-big-molecular-spintronics.html Nanophysics Mon, 23 Dec 2019 12:43:18 EST news496327394 Materials scientists aim to use bioinspired soft robots to carry out advanced interactions between humans and robots, but the associated technology remains to be developed. For example, soft actuators must perform quickly with force to deliver programmable shape changes and the devices should be easy to fabricate and energy efficient for untethered applications. In a new report on Science Advances, Zoey S. Davidson and an interdisciplinary research team in the departments of �鶹��Ժical Intelligence, Materials Science and Engineering, and the School of Medicine in Germany, U.S. and Turkey, combined several characteristics of interest using two distinct active materials systems to build soft robots. /news/2019-12-shape-programmable-dielectric-liquid-crystal-elastomer.html General �鶹��Ժics Mon, 09 Dec 2019 09:30:01 EST news495099424 Most people think of water as existing in only one of three phases: Solid ice, liquid water, or gas vapor. But matter can exist in many different phases—ice, for example, has more than ten known phases, or ways that its atoms can be spatially arranged. The widespread use of piezoelectric materials, such as microphones and ultrasound, is possible thanks to a fundamental understanding of how an external force, like pressure, temperature, or electricity, can lead to phase transitions that imbue materials with new properties. /news/2019-06-revealing-hidden-phases-power.html Materials Science Fri, 14 Jun 2019 02:53:27 EDT news479699599 The ability to hide an arbitrary object with a cloak at a distance from the object is a unique task in photonics research, although the phenomenon is yet to be realized in practice. In a recent study now published in Light: Science & Applications, Tianhang Chen and co-workers at the Key laboratory of Micro-Nano Electronics and Smart Systems, and the State Key Laboratory of Modern Optical Instrumentation in China proposed the first experimental realization of a remote cloaking device. The device can make any object located at a specific distance invisible using a direct current (DC) frequency. /news/2019-03-current-dc-remote-cloak-arbitrary.html Optics & Photonics Wed, 27 Mar 2019 09:30:03 EDT news472894146 To enable negative refraction and related optical illusions, metamaterials are artificially engineered with unique properties that result from their internal physical structures, rather than their chemical composition. The concept is credited to an experiment conducted by the Soviet scientist Victor Veselago in 1968 to show that negatively refracting materials (as opposed to the typically observed positive refractive index) to create a negative index 'superlens' could be achieved when both electric permittivity (ε) and magnetic permeability (µ) of a material were negative. Thirty-three years after the conceptual proposal, the pioneering work of physicist John Pendry enabled the development of metamaterials as Veselago imagined—a composite material with negative refractive index providing greatly improved resolution. /news/2018-08-programmable-guidance-current-fields-laplacian.html Optics & Photonics Wed, 29 Aug 2018 09:40:01 EDT news454668008 NIST has been granted a patent for technology that may hasten the advent of a long-awaited new generation of high-performance, low-energy computers. /news/2017-04-nist-fundamental-component-spintronic.html General �鶹��Ժics Thu, 27 Apr 2017 07:50:01 EDT news412496035 In experiments at two Department of Energy national labs – SLAC National Accelerator Laboratory and Lawrence Berkeley National Laboratory – scientists at Hewlett Packard Enterprise (HPE) have experimentally confirmed critical aspects of how a new type of microelectronic device, the memristor, works at an atomic scale. /news/2016-06-memristors.html Nanophysics Wed, 15 Jun 2016 07:58:46 EDT news385196311 (�鶹��Ժ)—Calling it an "Ode to Bubbles," MIT researchers have produced bubbling in sync with Beethoven's Symphony No. 9: Ode to Joy on a surface resembling a piano keyboard. The performance demonstrates the researchers' new method of turning bubbles on and off on different areas of a boiling surface in a fraction of a second. /news/2015-11-piano-sync-beethoven-symphony.html General �鶹��Ժics Tue, 03 Nov 2015 09:30:02 EST news365748727 The field of metamaterials has produced structures with unprecedented abilities, including flat lenses, invisibility cloaks and even optical "metatronic" devices that can manipulate light in the way electronic circuitry manipulates the flow of electrons. /news/2014-01-theory-metamaterials-analog.html General �鶹��Ժics Thu, 09 Jan 2014 14:00:04 EST news308497528 In a paper appearing in Nature's Scientific Reports, Dr. Ramesh Mani, professor of physics and astronomy at Georgia State University, reports that, in the presence of a magnetic field, negative resistivity can produce a positive resistance, along with a sign reversal in the Hall effect, in GaAs/AlGaAs semiconductor devices. /news/2013-12-negative-resistivity-positive-resistance-presence.html General �鶹��Ժics Wed, 11 Dec 2013 11:51:23 EST news305985072 Scientists at Northwestern University have developed a new nanomaterial that can "steer" electrical currents. The development could lead to a computer that can simply reconfigure its internal wiring and become an entirely different device, based on changing needs. /news/2011-10-day-rewire-nanomaterial-current-multiple.html Nanomaterials Sun, 16 Oct 2011 13:00:13 EDT news237980098 (�鶹��ԺOrg.com) -- A critical review of the current status and future prospects of new computing architectures based on ‘atomic switches’ fabricated by controlling the movement of cationic ions during solid electrochemical reactions. /news/2011-03-atomic-ionic.html Nanophysics Thu, 24 Mar 2011 08:49:38 EDT news220175344 Freescale Semiconductor today introduced the MM912J637 intelligent battery sensor (IBS), which accurately measures the voltage, current and temperature of lead-acid batteries and calculates the battery state, all while operating in harsh automotive conditions. The ability to accurately assess these battery parameters is becoming more important with increases in the number of hybrid vehicles on the road and overall electronic content in vehicles, as well as the introduction of start-stop systems. /news/2011-02-freescale-intelligent-sensor-car-battery.html Electronics & Semiconductors Mon, 28 Feb 2011 09:22:22 EST news218107254 As researchers around the world hasten to employ nanotechnology to improve production methods for applications that range from manufacturing materials to creating new pharmaceutical drugs, a separate but equally compelling challenge exists. /news/2010-02-explore-environmental-nanotechnology.html Bio & Medicine Mon, 01 Feb 2010 12:00:04 EST news184247189 (�鶹��ԺOrg.com) -- Recently, at Arizona State University’s Biodesign Institute, N.J. Tao and collaborators have found a way to make a key electrical component on a phenomenally tiny scale. Their single-molecule diode is described in this week’s online edition of Nature Chemistry. /news/2009-10-molecular-diode_1.html Nanophysics Thu, 22 Oct 2009 07:37:08 EDT news175415776 Recently, at Arizona State University's Biodesign Institute, N.J. Tao and collaborators have found a way to make a key electrical component on a phenomenally tiny scale. Their single-molecule diode is described in this week's online edition of Nature Chemistry. /news/2009-10-molecular-diode.html Nanophysics Tue, 13 Oct 2009 09:13:07 EDT news174643920 (�鶹��ԺOrg.com) -- As researchers strive to increase the density and functionality of circuit elements onto computer chips, one newer option they have is a memory resistor (or “memristor”), the fourth passive circuit element. First predicted to exist in 1971 and fabricated in 2008, memristors are two-terminal devices that change their resistance in response to the total amount of current flowing through them. /news/2009-02-self-programming-hybrid-memristortransistor-circuit-law.html Engineering Thu, 26 Feb 2009 10:19:55 EST news154865950 Cows could one day help to meet the rise in demand for alternative energy sources, say Ohio State University researchers that used microbe-rich fluid from a cow to generate electricity in a small fuel cell. /news/2007-08-cow-powered-fuel-cells-smaller-mightier.html Tue, 21 Aug 2007 14:18:10 EDT news106924690 Sharp Corporation has developed basic technology for a novel high-speed programming system for RRAM (Resistance Random Access Memory), a next-generation nonvolatile memory capable of programming data at rates about 100 times faster than flash memory. /news/2006-12-sharp-basic-technology-rram-next-generation.html Electronics & Semiconductors Wed, 13 Dec 2006 17:34:57 EST news85253697 A team of scientists led by ASU biophysicist Stuart Lindsay, director of the Center for Single Molecule Biophysics at the Biodesign Institute and an ASU professor of physics, recently created the first reproducible single molecule negative differential resistor (NDR). /news/2005-09-molecule-transistors.html Fri, 02 Sep 2005 15:42:15 EDT news6197 A new study suggests that some of the microorganisms found in cow waste may provide a reliable source of electricity. /news/2005-08-electric-cows-powerplants.html Wed, 31 Aug 2005 15:00:36 EDT news6141 Purchasing a new car may provide a great new ride, but it also comes with an additional payment each month. The daycare across town might be cheaper than the one next door, but it's an extra five-mile drive each day. Decisions like these can be complex and include some features that create resistance. A University of Arkansas professor has come up with a method to measure resistance as it occurs. /news/2005-05-resistance-method-accurate-results.html Tue, 24 May 2005 11:01:36 EDT news4232 A team of scientists led by biophysicist Stuart Lindsay from the Biodesign Institute at Arizona State University have created the first reproducible single molecule negative differential resistor and in the process have developed a groundbreaking experimental technique that provides a "roadmap" for designing single molecule devices based on biochemistry. /news/2005-02-successful-molecule-door-biomolecular-electronics.html Mon, 21 Feb 2005 08:41:43 EST news3123