Showing Spotlights 105 - 112 of 495 in category Fabrication Technologies and Devices (newest first):
The successful implementation of graphene-based devices invariably requires the precise patterning of graphene sheets at both the micrometer and nanometer scale. It appears that 3D-printing techniques are an attractive fabrication route towards three-dimensional graphene structures. Researchers have now used flakes of chemically modified graphene, namely graphene oxide GO and its reduced form rGO, together with very small amounts of a responsive polymer, to formulate water based ink or pastes to be used in 3D printers.
Feb 9th, 2015
Designing systems that build themselves is one of the great dreams of nanotechnology researchers, and they are taking great strides towards developing such 'bottom-up' nanotechnology fabrication techniques. Fabrication processes based on DNA might change this: DNA origami have been heralded as a potential breakthrough for the creation of nanoscale devices. Researchers have now developed methods to assemble DNA-functionalized microparticles into a colloidal gel, and to extrude this gel with a 3D printer at centimeter size scales.
Jan 29th, 2015
Researchers have successfully built rollable and transparent electronic devices that are not only lightweight, but also don't break easily. They managed to overcome two major challenges associated with the manufacture of flexible electronics: The temperature restriction of plastic substrates and the difficulty of handling flexible electronics during the fabrication process. The team rolled their transistor devices 100 times on a cylinder with radius of 4 mm, without significantly degrading their performance.
Jan 23rd, 2015
Researchers have identified novel 2D wide-band-gap semiconductors with high stabilities, namely monolayer arsenene and antimonene. These materials are indirect wide-band-gap semiconductors, and under strain, they become direct band-gap semiconductors. For arsenene and antimonene, such dramatic transitions of electronic properties could open a new door for nanoscale transistors with high on/off ratio, blue/UV optoelectronic devices, and nanomechanical sensors based on new ultrathin semiconductors.
Jan 14th, 2015
Researchers have now developed a simple high-throughput, one-pot procedure to prepare a series of nanocrystal inks that makes it a very attractive fabrication process for applications in a wide range of all-solution-processed, flexible, stretchable, and wearable optoelectronic devices. The proposed approach, which can easily be scaled up to 10g, is generic for various transparent conducting oxides as well as other oxides nanocrystal inks.
Jan 9th, 2015
Advanced health monitoring systems and healthcare devices will become an integral part of the Internet of Things. As a harbinger of things to come, nanotechnology researchers have now demonstrated a smart thermal patch which can be used for thermotherapy for pain management in a user interactive way. To fabricate the device, the researchers used CMOS technology to devise a silicon based smart thermal patch which is flexible and stretchable.
Dec 9th, 2014
The successful implementation of graphene-based devices invariably requires the precise patterning of graphene sheets at both the micrometer and nanometer scale. Finding the ideal technique to achieve the desired graphene patterning remains a major challenge. Researchers have now demonstrated 3D printed nanostructures composed entirely of graphene using a new 3D printing technique. The method exploits a size-controllable liquid meniscus to fabricate 3D reduced graphene oxide nanowires.
Nov 27th, 2014
The food chemistry Maillard reaction is responsible for many colors and flavors in foods - roasting of coffee, baking of bread and sizzling of meat. Scientists have made use of this ingenious food chemistry to 'cook' their copper nanowires. This green approach that formulates copper atoms in water to form untangled metallic state nanowires. Naturally, a lingering chocolate-like aroma was detected during the copper nanowires synthesis.
Nov 21st, 2014