tag: piezoelectric

State-Space Model Of An Electro-Mechanical-Acoustic Contactless Energy Transfer System Based On Multiphysics Networks
By Fraunhofer IIS/EAS - 11 May, 2022 - Comments: 0

Contactless energy transfer systems are mainly divided into acoustic, inductive, capacitive and optical, in which main applications are related to biomedical, wireless chargers and sensors in metal enclosures. When solids are used as transfer media, ultrasound transducers based on piezoelectricity can be used for through-wall power transfer, which can be named as electro-mechanical-acoustic con... » read more

MIT Researchers Create Thin-Film Speakers
By Technical Paper Link - 09 May, 2022 - Comments: 0

New academic paper from MIT, "An Ultra-Thin Flexible Loudspeaker Based on a Piezoelectric Micro-Dome Array." Abstract: "Ultra-thin, lightweight, high-performance, low-cost and energy-efficient loudspeakers that can be deployed over a wide area have become increasingly attractive to both traditional audio systems and emerging applications such as active noise control and immersive entertainm... » read more

Power/Performance Bits: Feb. 15
By Jesse Allen - 15 Feb, 2022 - Comments: 0

3D printed piezoelectrics Researchers at University of Notre Dame and Purdue University developed a hybrid 3D printer that combines multi-material aerosol jet printing and extrusion printing, integrating both functional and structural materials into a single printing platform. They used it to create an all-printed piezoelectric wearable device. The stretchable piezoelectric sensors conform ... » read more

Principles, Applications, And The Future Of Piezoelectric MEMS
By Joan Asselot - 26 May, 2021 - Comments: 0

Piezoelectricity is a property of certain materials to become electrically polarized under strain and stress. This phenomenon has been studied extensively since it was first discovered in the mid-18th century. Piezoelectric materials can generate an electric charge in response to an applied mechanical stress and can also generate mechanical stress upon an applied electrical charge. These mater... » read more

Power/Performance Bits: March 8
By Jesse Allen - 08 Mar, 2021 - Comments: 0

Non-toxic, printable piezoelectric Researchers at RMIT University and University of New South Wales developed a flexible and printable piezoelectric material that could be used in self-powered electronics including wearables and implantables. "Until now, the best performing nano-thin piezoelectrics have been based on lead, a toxic material that is not suitable for biomedical use," said Dr N... » read more

A Summary Of Piezoelectric Energy Harvesting For Autonomous Smart Structures
By Fraunhofer IIS/EAS - 09 Sep, 2020 - Comments: 0

The technology of energy harvesting has great potential to enable energy autonomy of wireless sensors. The drop of power requirements of micro-electronic devices allows confidence that piezoelectric energy harvesting (PEH) is able to reliably power a wireless sensor network (WSN). The present work summarizes results of ongoing research in the field of PEH. With the aid of a performance metric a... » read more

Power/Performance Bits: June 5
By Jesse Allen - 05 Jun, 2018 - Comments: 0

Self-assembled battery Researchers at Cornell University developed a self-assembling battery capable of near-instant charging. Instead of having the batteries' anode and cathode on either side of a nonconducting separator, the team's new approach intertwines the components in a self-assembling, 3D gyroidal structure, with thousands of nanoscale pores filled with the elements necessary for e... » read more

Power/Performance Bits: Feb. 21
By Jesse Allen - 21 Feb, 2017 - Comments: 0

Harvesting energy from multiple sources Researchers from the University of Oulu in Finland found a particular type of perovskite, KBNNO, has the right properties to extract energy from multiple sources simultaneously. While perovskites are particularly known for their use as solar cells, certain minerals in the perovskite family show piezoelectric and pyroelectric (harvesting energy from ... » read more

Power/Performance Bits: Sept. 13
By Jesse Allen - 13 Sep, 2016 - Comments: 0

Core-to-core communication Most research featured in the Power/Performance Bits has far-off applications, but a team from North Carolina State University and Intel developed something that could be brought into practice today: a way to accelerate core-to-core communication. Many important workloads incur significant core-to-core communication and are affected significantly by the costs, i... » read more

The Trouble With MEMS
By Ed Sperling - 25 May, 2016 - Comments: 0

The advent of the Internet of Things will open up a slew of new opportunities for MEMS-based sensors, but chipmakers are proceeding cautiously. There are a number of reasons for that restraint. Microelectromechanical systems are difficult to design, manufacture and test, which initially fueled optimism in the MEMS ecosystem that this market would command the same kinds of premiums that analo... » read more

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