Current Piezoelectric News and Events | Page 2

Current Piezoelectric News and Events, Piezoelectric News Articles.
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A four-way switch promises greater tunability of layered materials
A scientific team from the Department of Energy's Oak Ridge National Laboratory and Vanderbilt University has made the first experimental observation of a material phase that had been predicted but never seen. The newly discovered phase couples with a known phase to enable unique control over material properties -- an advance that paves the way to eventual manipulation of electrical conduction in two-dimensional materials such as graphene. (2019-11-18)

Psychosensory electronic skin technology for future AI and humanoid development
Professor Jae Eun Jang's team developed electronic skin technology for robots or electronic devices to feel pain through sense of touch. Expected to be applied in humanoid that needs 5 human senses and patients wearing prosthetic hands. (2019-08-29)

A battery-free sensor for underwater exploration
MIT researchers have developed a battery-free underwater communication system that uses near-zero power to transmit sensor data. The system could be used to monitor sea temperatures to study climate change and track marine life over long periods -- and even sample waters on distant planets. They are presenting the system at the SIGCOMM conference this week, in a paper that has won the conference's 'best paper' award. (2019-08-20)

You can't squash this roach-inspired robot
A new insect-sized robot created by researchers at the University of California, Berkeley, can scurry across the floor at nearly the speed of a darting cockroach -- and it's nearly as hardy as a cockroach, too: Try to squash this robot under your foot, and more than likely, it will just keep going. Small, durable robots like these could be advantageous in search and rescue missions, the creators say. (2019-07-31)

Fiber-optic vibration sensors could prevent train accidents
Researchers have developed new sensors for measuring acceleration and vibration on trains. The technology could be integrated with artificial intelligence to prevent railway accidents and catastrophic train derailments. (2019-07-17)

Tiny vibration-powered robots are the size of the world's smallest ant
Researchers have created a new type of tiny 3D-printed robot that moves by harnessing vibration from piezoelectric actuators, ultrasound sources or even tiny speakers. Swarms of these 'micro-bristle-bots' might work together to sense environmental changes, move materials -- or perhaps one day repair injuries inside the human body. (2019-07-17)

New e-tattoo enables accurate, uninterrupted heart monitoring for days
A new wearable technology, developed by engineers at the University of Texas at Austin, that is made from stretchy, lightweight material, could make heart health monitoring easier and more accurate. (2019-06-20)

Using physics to print living tissue
3D printers can be used to make a variety of useful objects by building up a shape, layer by layer. Scientists have used this same technique to 'bioprint' living tissues. Bioprinting is a relatively new technology that has advanced mostly by trial and error. Scientists are now using the laws of physics and predictive computer modeling to improve these techniques and optimize the bioprinting process. These new advances are reviewed in Applied Physics Reviews. (2019-06-04)

Good vibrations: Using piezoelectricity to ensure hydrogen sensor sensitivity
Researchers at Osaka University developed a new method that uses piezoelectric resonance to improve the manufacture of highly sensitive hydrogen sensors. By optimizing the gaps between palladium nanoparticles in the devices, they were able to increase the sensitivity by a factor of 12 over palladium nanoparticles fabricated by previous methods. The work in this study is important for the development of new sensing devices that are capable of detecting hydrogen at low concentration. (2019-05-22)

Cutting the time on early disease diagnoses with extracellular vesicles
A research team led by the University of Notre Dame is working to cut the test time for disease biomarkers. (2019-05-20)

A surprising experiment opens the path to new particle manipulation methods
A surprising experiment opens the path to new particle manipulation methods. Unexpected result from acoustics experiment could have applications in biomedical and microsystems research. (2019-05-10)

Samarium-doped crystals with 'giant' piezoelectricity
By introducing trace amounts of the element samarium (Sm), researchers greatly enhanced the performance of piezoelectric crystals used in advanced piezoelectric devices like sensors, a new study reports. (2019-04-18)

SLAC develops novel compact antenna for communicating where radios fail
A new type of pocket-sized antenna, developed at the Department of Energy's SLAC National Accelerator Laboratory, could enable mobile communication in situations where conventional radios don't work, such as under water, through the ground and over very long distances through air. (2019-04-12)

Magnetization reversal achieved at room temperature using only an electric field
Scientists at Tokyo Institute of Technology achieved magnetization reversal in cobalt-substituted bismuth ferrite by applying only an electric field. Such an effect had been sought after for over a decade in order to make new types of low-power-consumption magnetic memory devices. (2019-02-22)

Powering a pacemaker with a patient's heartbeat
Implantable pacemakers have without doubt altered modern medicine, saving countless lives by regulating heart rhythm. But they have one serious shortcoming: Their batteries last only five to 12 years, at which point they have to be replaced surgically. Now, researchers have surmounted this issue by designing a pacemaker powered by the energy of heartbeats, according to a report in ACS Nano. The device was successfully tested in pigs, which have a similar physiology to humans. (2019-02-20)

Researchers develop flags that generate energy from wind and sun
Scientists have created flags that can generate electrical energy using wind and solar power. (2019-02-11)

Engineers harvest heart's energy to power life-saving devices
The heart's motion is so powerful that it can recharge life-saving devices, according to new research from Dartmouth. Using a dime-sized invention developed by engineers at Dartmouth's Thayer School of Engineering, the heart's energy can be harnessed to power implantable devices, according to the study. Creating an energy source within the body could save millions of people who rely on pacemakers and other implantable devices from having to undergo surgery to replace batteries. (2019-02-04)

Mechanical engineers develop process to 3D print piezoelectric materials
New printing technique and materials could be used to develop intelligent materials and self-adaptive infrastructures and transducers. (2019-01-21)

Orthopedic implants double the rate of bone lengthening in kids
Scientists from Tomsk Polytechnic University have developed implants which make mesenchymal stem cell to differentiate into bone tissue and accelerate limb lengthening in two times. The study outcomes were proved during preclinical trials at the Ilizarov Orthopedic Center (Kurgan, Russia). (2019-01-21)

Artificial sensor mimics human sense of touch
A new tactile sensor can detect surface shapes and structures, showing advantages over existing sensors, according to new research in IEEE/ASME Transactions on Mechatronics. (2018-11-07)

Flexible piezoelectric acoustic sensors for speaker recognition
A KAIST research team has developed a machine learning-based acoustic sensor for speaker recognition. The team fabricated a flexible piezoelectric membrane by mimicking the basilar membrane in the human cochlear. Resonant frequencies vibrate corresponding regions of the trapezoidal piezoelectric membrane, which converts voice to electrical signal with a highly sensitive self-powered acoustic sensor. (2018-10-04)

Enhancement of piezoelectric properties in organic polymers all in the molecules
The inability to alter intrinsic piezoelectric behavior in organic polymers hampers their application in flexible, wearable and biocompatible devices, according to researchers at Penn State and North Carolina State University, but now a molecular approach can improve those piezoelectric properties. (2018-10-04)

UIC chemical engineers first to functionalize boron nitride with other nanosystems
Scientists report that treatment with a superacid causes boron nitride layers to separate into atomically thick sheets, while creating binding sites on the surface of these sheets that provide opportunities to interface with nanoparticles, molecules and other 2D nanomaterials, like graphene. (2018-09-25)

UBC breakthrough opens door to $100 ultrasound machine
Engineers at the University of British Columbia have developed a new ultrasound transducer, or probe, that could dramatically lower the cost of ultrasound scanners to as little as $100. Their patent-pending innovation -- no bigger than a Band-Aid -- is portable, wearable and can be powered by a smartphone. (2018-09-11)

Pushing 'print' on large-scale piezoelectric materials
A new, inexpensive method to 'print' large-scale sheets of two dimensional (2D) piezoelectric material offers tremendous opportunity for new piezo-sensors and energy harvesting. (2018-09-06)

Device harvests energy from low-frequency vibrations
A wearable energy-harvesting device could generate energy from the swing of an arm while walking or jogging, according to a team of researchers from Penn State's Materials Research Institute and the University of Utah. The device, about the size of a wristwatch, produces enough power to run a personal health monitoring system. (2018-08-30)

Soundwave-surfing droplets leave no traces
Engineers at Duke University have developed a way to manipulate, split and mix droplets of biological fluids by having them surf on acoustic waves in oil. The technology could form the basis of a small-scale, programmable, rewritable biomedical chip that is completely reusable for disparate purposes from on-site diagnostics to laboratory-based research. (2018-07-26)

Relax, just break it
Argonne scientists and their collaborators are helping to answer long-held questions about a technologically important class of materials called relaxor ferroelectrics. (2018-07-19)

Researchers couple artificial atom to acoustic resonator
Researchers from Russia and Britain have demonstrated an artificial quantum system, in which a quantum bit interacts with an acoustic resonator in the quantum regime. This allows the familiar effects of quantum optics to be studied on acoustic waves and enables an alternative approach to quantum computer design, which is based on acoustics and could make quantum computers more stable and compact. (2018-07-11)

An unlikely marriage among oxides
Sebastian Siol is looking for new materials with unusual properties that were so far not accessible in experiments. To do this, he connects partners who don't really fit together: One partner forces the other into a state that would not be possible without the unlikely pairing. Siol also makes sure that the crystal bonds last in everyday life. Only then are they interesting for industrial applications. (2018-06-19)

Flexible, highly efficient multimodal energy harvesting
A 10-fold increase in the ability to harvest mechanical and thermal energy over standard piezoelectric composites may be possible using a piezoelectric ceramic foam supported by a flexible polymer support, according to Penn State researchers. (2018-05-21)

Soft machines
In the world of robotics, soft robots are the new kids on the block. The unique capabilities of these automata are to bend, deform, stretch, twist or squeeze in all the ways that conventional rigid robots cannot. Today, it is easy to envision a world in which humans and robots collaborate -- in close proximity -- in many realms. Emerging soft robots may help to ensure that this can be done safely, and in a way that syncs to human environments or even interfaces with humans themselves. (2018-05-21)

Electric textile lights a lamp when stretched
Working up a sweat from carrying a heavy load? That is when the textile works at its best. Swedish researchers have developed a fabric that converts kinetic energy into electric power. The greater the load applied to the textile and the wetter it becomes the more electricity it generates. The results are now published in the Nature Partner journal Flexible Electronics. (2018-03-22)

Designing a new material for improved ultrasound
Development of a theoretical basis for ultrahigh piezoelectricity in ferroelectric materials led to a new material with twice the piezo response of any existing commercial ferroelectric ceramics, according to an international team of researchers from Penn State, China and Australia. (2018-03-22)

Piezomagnetic material changes magnetic properties when stretched
Piezoelectric materials, which generate an electric current when compressed or stretched, are familiar and widely used: lighters that spark when you press a switch, microphones, sensors, motors and all kinds of other devices. Now a group of physicists has found a material with a similar property, but for magnetism. This 'piezomagnetic' material changes its magnetic properties when put under mechanical strain. (2018-03-16)

Marine exploration sensing with light and sound
Unveiling new strategies to improve future wireless underwater sensing networks for marine research and communication. (2018-03-12)

Demonstration of a single molecule piezoelectric effect
Researchers from IOCB Prague and IP CAS demonstrated for the first time a single molecule piezoelectric effect. The study published in the Journal of the American Chemical Society represents a breakthrough in understanding the electromechanical behavior of individual molecules and provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale. (2018-02-15)

Today's highest quality composite-piezoelectric developed at NUST MISIS
NUST MISIS scientists jointly with an international group of scientists have managed to develop a composite material that has the best piezoelectric properties today. The research results were published in Scientific Reports journal. (2018-02-12)

A new architecture for miniaturization of atomic clocks
NICT developed a simple miniaturized atomic clock system, which does not require a complicated frequency multiplication, as an outcome of a collaboration with Tohoku University and Tokyo Institute of Technology. We propose a new microwave generator that exploits thickness extensional vibration in a piezoelectric thin film to miniaturize an atomic clock. By transferring this technology into practical products, atomic clocks, which are deployed in high-end systems such as satellites, can be incorporated on smartphones. (2018-01-23)

Taking control at the junction
Fine tuning the composition of nitride alloys can further the development of optical and electronic interface devices. (2018-01-22)

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