Nanotechnology Spotlight – Latest Articles

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Showing Spotlights 209 - 216 of 2414 in category All (newest first):

 

Iontronic sensing paper provides a new touch for pressure sensors (w/video)

paper_sensorRecently, a brand-new mechanism of pressure sensing, known as flexible iontronic sensing (FITS), has been introduced, which utilizes pressure-induced capacitive changes between electrodes and ionic surfaces. Researchers have used FITS to develop a single-sheet iontronic paper substrate with both ionic and conductive patterns as an all-in-one flexible sensing platform. This novel paper sensor extends the iontronic sensing principle to a more adaptive material system, with direct printability, custom cuttability, and 3D foldability at a low cost - just as regular paper.

Mar 27th, 2019

Graphene transfer using an off-the-shelf office laminator

graphene_transferAn international team of researchers has demonstrated a simple method for transferring A4-size sheets of CVD graphene from copper foils onto a target substrate using a commercially available polyvinyl alcohol (PVA) polymer foil as a carrier substrate and an off-the-shelf office laminator. This do-it-yourself approach requires few tools and low cost materials - it is safe and easy enough to be carried out in school physics classes. There are no chemicals involved besides water; no spinner; no dangerous etchants.

Mar 25th, 2019

How nanotechnology enables wearable electronics

sensorsSmart watches, fitness trackers, smart garments, smart medical attachments, data gloves - the market for wearable electronics is quickly evolving beyond health care, fitness and wellness into infotainment, and commercial and industrial applications. A review investigates the contribution of nanomaterials in the field of wearables with a focus on actuators and sensors. It discusses current applications of nanomaterials in this field and touch upon the different materials and methods being used.

Mar 22nd, 2019

Exploring the impact of nanoparticle design on Parkinson's disease therapies

proteinAlpha-synuclein is a protein whose function in the healthy brain is currently unknown. It is of great interest to Parkinson's researchers because it is a major constituent of Lewy bodies, protein clumps that are the pathological hallmark of Parkinson's disease (PD). Scientists believe that the self-assembly of alpha-synuclein into oligomers and fibrils is linked to progress and pathogenesis of the disease. A new study suggest that important characteristics of the fibrillation process, such as surface charge and surface functional group, should be considered in the development of nanotechnology-based therapeutic approaches.

Mar 19th, 2019

Light-induced active ion transport in graphene oxide membranes

ion_transportRecent research in nanofluidics has adopted reconstructed layered two-dimensional (2D) sheets as a promising material platform for nanofluidics. These membranes contain a high volume fraction of interconnected 2D nanochannels. In new work, researchers demonstrate a coupled photon-electron-ion transport phenomenon through graphene oxide membranes. It shows a straightforward way on how to power the transport in 2D layered materials using the energy of light.

Mar 18th, 2019

Antimonene-based all-optical modulator

antimonene_nanosheetsIn recent years, all-optical modulators (AOMs) have attracted significant interests due to their low power consumption, broad bandwidth, and potential in all-optical fields. Among these, AOMs based on the high photothermal efficiency of antimonene, exhibit remarkable advantages for their large modulation depth, wide operating wavelength range, and easy implementation. Researchers demonstrated that an antimonene-based AOM was successfully utilized to actively Q-switch a fiber laser in a fully photonics domain and this actively modulated laser represented all-optically tunable output parameters, and easy time synchronization.

Mar 15th, 2019

Bottom-up assembled chiral meta-molecules

meta-moleculeInspired by chiral molecular structures, scientists are developing strategies to build artificial chiral materials by mimicking natural molecular structures using functional materials. Specifically, metal nanomaterials exhibit tailorable optical properties upon excitation of surface plasmons and become one of the most promising components to realize chiral optical metamaterials. New work provides a macroscopic model to understand the origin of chirality because the structures of the chiral meta-molecules are observable under a microscope and also the optical chirality is several orders of magnitude stronger than the intrinsic chirality of organic molecules.

Mar 14th, 2019

Graphene and silk combine to make self-healable, multifunctional electronic tattoos

e-tattooElectronic tattoos (e-tattoos) are an extremely thin form of wearable electronics. They are lightweight and soft, which allows them to be intimately mounted on human skin for noninvasive, high-fidelity sensing. During the operation of e-tattoos, they are constantly exposed to external mechanical inputs such as bending, twisting, pressing, and cutting, which may cause mechanical damage and lead to malfunction. Now, researchers have demonstrated a self-healing silk e-tattoo that shows high sensitivity to multiple stimuli, including strain, humidity, and temperature based on a unique graphene, silk fibroin, Ca2+ combination.

Mar 8th, 2019