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Category: Electrical Engineering

Researchers develop reprocessable thermosets for sustainable 3-D printing

3D printing reprocessable thermosets (3DPRTs) make 3D printed structures reshapeable, repairable and recyclable. Credit: Kavin Kowsari 3-D printing of complex structures that contain submillimeter-sized features has eluded researchers for decades. Recent advancements in 3-D printing have brought about viable 3-D printing techniques such as digital light processing (DLP)-based systems that use ultra-violet (UV) light to transform initially-liquid polymer resins into free-standing solid structures in a precise, controlled manner. Among all 3-D printing materials, thermosetting photopolymers claim almost half of the…

Heat and sound wave interactions in solids could run engines, refrigerators — ScienceDaily

A solid can serve as a medium for heat and sound wave interactions just like a fluid does for thermoacoustic engines and refrigerators — resulting in leak-free machines that can stay operating longer. Leaky systems have limited how engineers design thermoacoustic devices that rely on the interplay between temperature oscillations and sound waves. Researchers at Purdue and the University of Notre Dame have demonstrated for the first time that thermoacoustics could theoretically occur in solids as well as fluids, recently…

Italian researchers develop lighter, cheaper robotic hand

Marco Zambelli shows his prosthetic hand during an interview with the Associated Press in Rome Thursday, May 10, 2018. An Italian government-funded research institute and prosthetic maker unveiled a new robotic hand that they say amputees to grip objects with more precision, and with a mechanical design that will significantly bring down the price of a myoeletric prosthetic hand. (AP Photo/Gregorio Borgia) Italian researchers on Thursday unveiled a new robotic hand they say allows users to grip objects more naturally…

Brains of young people with severe behavioral problems are ‘wired differently’ — ScienceDaily

Research published today (Tuesday 1 May) has revealed new clues which might help explain why young people with the most severe forms of antisocial behaviour struggle to control and regulate their emotions, and might be more susceptible to developing anxiety or depression as a result. The study, published in the journal Social Cognitive and Affective Neuroscience, used neuroimaging methods to investigate young people with the condition ‘Conduct Disorder’ — typified by symptoms that range from lying and truancy, through to…

Transparent eel-like soft robot can swim silently underwater — ScienceDaily

An innovative, eel-like robot developed by engineers and marine biologists at the University of California can swim silently in salt water without an electric motor. Instead, the robot uses artificial muscles filled with water to propel itself. The foot-long robot, which is connected to an electronics board that remains on the surface, is also virtually transparent. The team, which includes researchers from UC San Diego and UC Berkeley, details their work in the April 25 issue of Science Robotics. Researchers…

A (verified) picture is worth a grand prize

Zechang Fu, Rachel Thomas, William Fries, Meiying Wu and Alex Johar won the RJI Student Competition with VeriPixel, which uses blockchain technology to allow news organizations and news consumers to verify the authenticity of photographs sent over open networks. A Mizzou Electrical Engineering and Computer Science major, four School of Journalism students with various backgrounds and skill sets, and a Truman State University computer science and business administration major who joined up via TigerHacks created the app that landed the…

Doctors may soon be able to see a brain tumor burned away in real time

Some 80,000 Americans will be diagnosed with a brain tumor this year according to the American Brain Tumor Association. Many of them will need major surgery and chemotherapy. Sixteen thousand of them will lose the battle. But a team of USC Viterbi School of Engineering researchers are now making it easier, faster and safer for doctors to use an emerging procedure – one that involves burning away tumors in more patients, including those with brain tumors. Radiofrequency ablation, or RFA,…

Your next pilot could be drone software

Would you be – or feel – safer if one of these people were a robot? Credit: Skycolors/Shutterstock.com Would you get on a plane that didn’t have a human pilot in the cockpit? Half of air travelers surveyed in 2017 said they would not, even if the ticket was cheaper. Modern pilots do such a good job that almost any air accident is big news, such as the Southwest engine disintegration on April 17. But stories of pilot drunkenness, rants,…

A little fold-up joystick brings haptics to portable devices

Credit: Ecole Polytechnique Federale de Lausanne The tactile joystick developed by startup Foldaway Haptics brings the sense of touch to mobile devices, drones and, in a smaller version, to virtual reality controls. This pocket-sized device, which can be unfolded in an instant, is about to hit the market. Next week it will be showcased at the Hannover Messe, the world’s largest trade fair for industrial technology. The tactile joystick developed by EPFL spin-off Foldaway Haptics is not much larger than…

Pulsed corona discharge removes pharmaceutical residues from wastewater

A doctoral dissertation by a candidate at Lappeenranta University of Technology (LUT) examines the removal of harmful organic substances such as pharmaceutical residues from wastewater using only electricity. According to practical tests, pulsed corona discharge (PCD) may significantly reduce the environmental burden of pharmaceutical residues. According to the pilot tests in the chemical technology dissertation by Petri Ajo, M.Sc. (Tech.), pharmaceutical residues, their variants and other similar compounds degrade easily from wastewater because the process is non-selective. PCD is…