Nanotechnology Spotlight – Latest Articles

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Showing Spotlights 1 - 8 of 527 in category Fabrication Technologies and Devices (newest first):

 

Kevlar-ceramic aerogel nanocomposite material improves thermal protection textiles for harsh environments

flame-resistantWearable thermal insulation materials for harsh environments always require a compromise during their design and manufacturing. On one hand they need to be mechanically tough to provide impact resistance. On the other hand they need to be heat resistant. Now, researchers have developed a wearable aramid/ceramic aerogel nanocomposite material with both excellent mechanical and thermal properties. The key to this fabrication method is the in situ crosslinking that takes place between the silica pre-ceramic aerogel precursor and the Kevlar fibers.

Nov 30th, 2020

Morphing 2D circuits - next-generation microfluidics gets rid of solid walls

microfluidicsOne of the issues with microfluidic devices in life sciences is that most platforms rely on materials or chemicals that are outside the biological breadth as building blocks, scaffolds, or coatings for the devices. In a game-changing approach, researchers are developing a transformative way to fabricate microfluidic devices, where solid walls are replaced by transparent, morphing fluid walls using only biocompatible materials. This novel method can generate cell-friendly microfluidic devices on demand with features below 50 microns in size.

Nov 19th, 2020

Concept design for a user-powered, refreshable Braille e-book reader for the blind

brailleIn order to make dynamic written content, for instance a news reader, available for blind or vision-impaired people, scientists have come up with various designs of sheet-type, refreshable Braille displays. Expanding the use of nanotechnologies in designing next-generation Braille readers, researchers now have successfully demonstrated a refreshable Braille display system by using a safe high-voltage power source - a triboelectric nanogenerator.

Nov 5th, 2020

Solar-powered smart dust

microchipResearchers demonstrate that dust-sized photovoltaic cells grown on silicon substrate can be heterogeneously integrated with other chiplets using a high-throughput wafer-level packaging process. The ability to integrate various nanoelectronic chiplets - such as processor, memory, and photovoltaics - in an industrial-scale wafer-level-packaging process, unlocks the potential of large-scale manufacturing of these compact integrated systems with high performance and ultralow cost.

Oct 27th, 2020

Laser shockwave transforms bioinspired ultrahigh molecular weight polyethylene

polymerBeing able to replicate the extraordinary mechanical properties of nacre and other biological structures could lead to synthetic materials that possess the exceptional mechanical properties required to perform under extreme conditions. In this context, ultrahigh molecular weight polyethylene is a high-performance specialty polymer with a unique set of properties and applications. It shows remarkable strength-to-weight ratio and an excellent energy absorption ability, making it a promising material for protective applications such as body armor, biomedical implants or heat-resistant coatings.

Oct 22nd, 2020

Ultrasound-induced polymers

molecular-dynamicsResearchers have recently demonstrated that high-intensity focused ultrasound (HIFU) is a promising, non-invasive stimulus with multiple superior and unique capabilities to induce localized heating and achieve temporal and spatial thermal effects in polymers. The team proposes a new manner of stimulating stimuli-responsive polymers. These polymers demonstrate promise for controlled drug delivery, sensing and biosensing, smart coatings, soft robotics, and flexible electronics among others.

Oct 20th, 2020

Nanostructured surface inactivates SARS-CoV-2 coronavirus within six hours

nanostructured-surfaceResearchers have successfully produced durable antiviral surfaces that inactivate SARS-CoV-2 within 6 hours. In contrast, on various non-nanostructured surfaces or smooth surfaces, the SARS-COV-2 virus remained viable for up to 48 hours. These results provide evidence that surfaces that are structured with specific nanoscale surface features are effective in preventing SARS-CoV-2 and the subsequent environmental spread. Such nanostructured surfaces can be used in hospital environments and can be extended to other industrial sectors and public infrastructure such as transportation, where fomites or contaminated surfaces are carriers for viral infections.

Sep 18th, 2020

Sintering advanced ceramics membranes for safe solid-state batteries in just 10 seconds

sinteringSintering is a critical processing technology in the production of ceramic materials that uses high heat to compact ceramic powders into a solid form. Sintering of pure oxide ceramics requires relatively long processing times (about 20 hours) and high temperatures of 800 degrees Celsius or more. Researchers have now developed an ultrafast high-temperature sintering technique to fabricate solid state electrolytes for solid state batteries with dense structure and excellent electrochemical performance.

May 4th, 2020