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Polymers Jan 24, 2023

A rainbow of force-activated pigments for identifying stress

Stress isn't just the psychological pressure you feel in response to a looming deadline at work. It is also a description of the physical forces pushing, pulling, or twisting an object, structure, or material. Examples of ...

Optics & Photonics Jan 13, 2023

Scientists achieve phonon and photon lasing in optomechanical cavities

Since the introduction of the first ruby laser—a solid-state laser that uses the synthetic ruby crystal as its laser medium—in 1960, the use of lasers has expanded significantly in scientific, medical and industrial fields.

Optics & Photonics Jan 10, 2023

Investigating the laser-induced periodic surface structure (LIPSS) of silicon

The electronic and optical devices that we use on a daily basis, such as mobile phones, LEDs and solar cells use transistors and other parts that are consistently getting smaller and more compact. With an ever-growing need ...

Polymers Dec 27, 2022

Highly sensitive infrared polarizer based on sulfur waste created

Polarimetric images can provide information such as shading and surface morphologies by using polarizers that selectively reflect the transverse electric (TE) field and transmit the transverse magnetic (TM) field of unpolarized ...

Nanomaterials Dec 23, 2022

Researchers create the world's smallest Christmas record

Measuring only 40 micrometers in diameter, researchers at DTU Physics have made the smallest record ever cut. Featuring the first 25 seconds of the Christmas classic "Rocking Around the Christmas Tree," the single is cut ...

Nanophysics Dec 22, 2022

Shrinking hydrogels enlarge nanofabrication options

Researchers from Carnegie Mellon University and the Chinese University of Hong Kong have developed a strategy for creating ultrahigh-resolution, complex 3D nanostructures out of various materials.

Nanophysics Dec 21, 2022

Team develops graphene-based nanoelectronics platform

A pressing quest in the field of nanoelectronics is the search for a material that could replace silicon. Graphene has seemed promising for decades. But its potential has faltered along the way, due to damaging processing ...

Optics & Photonics Dec 19, 2022

Research team develops direct laser writing system for high-resolution, high-efficiency nanofabrication

Peripheral photoinhibition (PPI) direct laser writing (DLW) is a lithography technique used to fabricate intricate 3D nanostructures that are widely employed in photonics and electronics. PPI-DLW uses two beams, one to excite ...

Nanophysics Dec 8, 2022

A room-temperature terahertz camera based on a CMOS and quantum dots

Terahertz (THz) radiation is electromagnetic radiation ranging from frequencies of 0.1 THz to 10 THz, with wavelengths between 30μm and 3mm. Reliably detecting this radiation could have numerous valuable applications in security, ...

Polymers Nov 22, 2022

Researchers use low-cost 3D printer to develop new method for creating microspheres

Researchers use powerful microchannel droplet generation equipment to create uniform polymer microsphere materials, which have high economic values. These microspheres are spherical microparticles that can be used in many ...

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