Search results for microelectromechanical systems

Nanophysics Aug 22, 2024

World's first micromachine twists 2D materials at will

Just a few years ago, researchers discovered that changing the angle between two layers of graphene, an atom-thick sheet of carbon, also changed the material's electronic and optical properties. They then learned that a "twist" ...

Materials Science Jun 26, 2024

Scientists unveil vacancy-assisted fatigue damage mechanism at small scales

Classical theories of fatigue damage in bulk metals have been extensively studied, but little is known about the fundamental fatigue mechanisms at submicron and nanometer scales, where dislocation pattern formation is completely ...

Condensed Matter Jun 18, 2024

A method to reversibly control Casimir forces using external magnetic fields

The so-called Casimir force or Casimir effect is a quantum mechanical phenomenon resulting from fluctuations in the electromagnetic field between two conducting or dielectric surfaces that are a short distance apart. Studies ...

Condensed Matter Jun 13, 2024

Researchers tune Casimir force using magnetic fields

Research teams led by Prof. Zeng Changgan and Zhang Hui from the Hefei National Laboratory for Physical Sciences at the Microscale, the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences ...

Condensed Matter May 23, 2024

Study identifies high-performance alternative to conventional ferroelectrics

Lighting a gas grill, getting an ultrasound, using an ultrasonic toothbrush—these actions involve the use of materials that can translate an electric voltage into a change in shape and vice versa.

Nanomaterials Apr 8, 2024

Scientists develop composite accelerometer for extreme environments

The demand for microelectromechanical systems (MEMS) resilient to harsh environments is growing. Silicon-based MEMS struggle under extreme conditions, limited by their performance at elevated temperatures. Silicon carbide ...

Optics & Photonics Feb 5, 2024

Key innovation in photonic components could transform supercomputing technology

Programmable photonic integrated circuits (PPICs) process light waves for computation, sensing, and signaling in ways that can be programmed to suit diverse requirements. Researchers at Daegu Gyeongbuk Institute of Science ...

Space Exploration Jan 19, 2024

Q&A: Small solar sails could be the next 'giant leap' for interplanetary space exploration

Nearly 70 years after the launch of the first satellite, we still have more questions than answers about space. But a team of Berkeley researchers is on a mission to change this with a proposal to build a fleet of low-cost, ...

Optics & Photonics Dec 13, 2023

Glassy shell of microscopic algae inspires tiny ultrasound detectors for medical imaging

A multidisciplinary team of researchers from Skoltech has discovered the resonance frequencies of diatom frustules. These intricately structured silicon dioxide shells of single-celled microalgae provide a promising model ...

Condensed Matter Oct 20, 2023

A strategy for the spin-acoustic control of silicon vacancies in a 4H silicon carbide-based bulk acoustic resonator

Bulk acoustic resonators—stacked material structures inside which acoustic waves resonate—can be used to amplify sounds or filter out undesired noise. These resonators have found wide use in today's RF telecommunication, ...

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