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CNST: 2D Materials Nanosculpting and Bioelectronics Applications

InterNano - Upcoming Events - September 26, 2016 - 11:42am
LectureTuesday, November 22, 2016 - 10:30amGaithersburg, MD https://www.nist.gov/news-events/events/2016/09/2d-materials-nanosculpting-and-bioelectronics-applications Electron beams constitute powerful tools to shape materials with atomic resolution inside a transmission electron microscope (TEM). I will describe experiments where we push the limits of device size to atomic scale in 2D materials beyond graphene (MoS2, WS2, MoTe2, black phosphorous) and expand their function and precision, while addressing fundamental questions about structure and properties at nanometer and atomic scales. Experiments are performed in situ and ex situ TEM. In situ TEM experiments include fabrication of nanoribbons and field-effect-transistors from novel two-dimensional materials down to sub-nm widths. Ex situ TEM experiments include the ultrafast, all-electronic detection and analysis of biomolecules by driving them through tiny holes – or nanopores – in thin membranes, including the efforts towards mapping a human genome under 10 min. As molecules are driven through nanopores in solution, they block the ion current flow resulting in current reductions from which molecule’s physical and chemical properties are inferred. DNA, proteins, microRNA and other biomolecules can be analyzed. The temporal, spatial resolution and sensitivity in these experiments have been improved over the last few years thanks to advanced materials, device designs and new electronics. For further information please contact Robert Ilic, 301-975-2639, robert.ilic@nist.gov

Finding the Goldilocks zone for multilayer silicene growth

Nanotechweb - September 26, 2016 - 7:59am
(with audio) X-ray diffraction measurements provide evidence of multilayer silicene growth and highlight the important role of growth temperatures for achieving the pure silicene phase.

Thermophoresis assembles plasmonic nanoparticles

Nanotechweb - September 26, 2016 - 1:57am
New optical technique could assemble nanoparticles into functional superstructures and devices.

Oxford Instruments is ‘Bringing the Nanoworld Together’ in India once again - 22 - 23 November 2016 | IISc Bangalore

Nanotech-Now - September 25, 2016 - 7:45am
Oxford Instruments announces the launch of the 2016 technical workshops in India. Now in their 5th year, these workshops held across India have proven extremely popular, with previous events in Bangal...

Speedy bacteria detector could help prevent foodborne illnesses

Nanotech-Now - September 25, 2016 - 7:45am
It seems like almost every week another food product is being recalled because of contamination. One of the more common culprits is a pathogenic strain of E. coli. To help prevent illnesses caused by...

Coffee-infused foam removes lead from contaminated water

Nanotech-Now - September 25, 2016 - 7:45am
Coffee is one of the most popular drinks in the U.S., which makes for a perky population — but it also creates a lot of used grounds. Scientists now report in the journal ACS Sustainable Chemistry & E...

As You Sow’s Shareholder Inquiry on Nanomaterials Fought by Walgreens: Shareholder Proposal Addresses Recent Laboratory Tests Finding Harmful Nanomaterials in Walgreens’ Store Brand Infant Formula

Nanotech-Now - September 25, 2016 - 7:45am
Rather than respond to shareholder concerns that Walgreens’ store-brand infant formula may contain harmful, “needle-like” nanomaterials, Walgreens filed a motion with the SEC to block the inquiry.

BBI Solutions launches innovative conjugate blocking technology that enhances signal intensity for lateral flow immunoassays

Nanotech-Now - September 25, 2016 - 7:45am
BBI Solutions has launched Morffi™, a novel conjugate blocking technology that enhances signal intensity and improves the sensitivity of lateral flow immunoassays, at the Lateral Flow Test Development...

Mexican scientist in the Netherlands seeks to achieve data transmission ... speed of light

Nanotech-Now - September 25, 2016 - 7:45am
The photonic integrated circuits could replace electronic, currently used in computers or smartphones, to make them faster and compact In order to create effective technology that provides competit...

Towards Stable Propagation of Light in Nano-Photonic Fibers

Nanotech-Now - September 25, 2016 - 7:45am
Devices based on light, rather than electrons, could revolutionize the speed and security of our future computers. However, one of the major challenges in today's physics is the design of photonic dev...

Bruker Introduces Complete Commercial AFM-Based SECM Solution: PeakForce SECM Mode Enables Previously Unobtainable Electrochemical Information

Nanotech-Now - September 23, 2016 - 7:45am
Bruker’s Nano Surfaces Division today announced the release of scanning electrochemical microscopy (SECM) capability for its Dimension Icon® atomic force microscope (AFM) platform. Utilizing a proprie...

Graphene nanoribbons show promise for healing spinal injuries: Rice University scientists develop Texas-PEG to help knit severed, damaged spinal cords

Nanotech-Now - September 23, 2016 - 7:45am
The combination of graphene nanoribbons made with a process developed at Rice University and a common polymer could someday be of critical importance to healing damaged spinal cords in people, accordi...

NV magnetometer could help make write heads smaller

Nanotechweb - September 23, 2016 - 5:08am
Sensor can characterize the broadband magnetic fields produced by these devices, and so help miniaturize them further.

Research Explores Thermoelectric Screen Printing

National Nanomanufacturing Network - September 22, 2016 - 11:53am
What if you could easily print a thin layer of material – for use anywhere – that would allow you to create flexible energy harvesters or coolers? That may soon be a reality. Kathleen Tuck, Boise State University News

IBM Lab-on-a-Chip Breakthrough Aims to Help Physicians Detect Cancer and Diseases at the Nanoscale: IBM scientists will collaborate with the Icahn School of Medicine at Mt. Sinai to test on prostate cancer

InterNano Industry News - September 22, 2016 - 3:45am
IBM (NYSE: IBM) scientists have developed a new lab-on-a-chip technology that can, for the first time, separate biological particles at the nanoscale and could enable physicians to detect diseases suc...
Categories: Nanotechnology News

Graphene-Enabled Paper Makes for Flexible Display

InterNano Industry News - September 22, 2016 - 3:45am
<?xml version="1.0" encoding="UTF-8"?> By applying a voltage to graphene sandwiching a piece of paper, researchers have created a new display technology Images: Bilkent University Graphene has been building quite a reputation for itself in flexible displays. Among the ways graphene has been used in this field is as an alternative to the relatively scarce indium tin oxide (ITO), a transparent conductor that controls display pixels. Graphene has also been used in a display’s pixel electronics, or backplane, where a solution-processed graphene is used as an electrode. Now researchers at Bilkent University in Ankara, Turkey, have demonstrated that an ordinary sheet of paper that is sandwiched between two films of multilayer graphene can act as a rudimentary flexible electronic display. In an interview with Nature Photonics , the corresponding author, Coskun Kocabas, says that this system could serve as a framework for turning ordinary printing paper into an optoelectronic display. Kocabas explained: We would like to fabricate a display device that can reconfigure the displayed information electronically on a sheet of printing paper. Several technologies based on electrophoretic motion of particles, thermochromic dyes and electrowetting of liquids have been developed to realize electronic paper, or e-paper, which has great potential for consumer electronics. Contrasting with the primary aim of e-paper, these technologies, however, are not compatible with conventional cellulose-based printing papers. The researchers described their device in the journal ACS Photonics. It operates by applying a bias voltage to the graphene to trigger an intercalation of ions so that the optical absorption of the graphene layers is altered. That turns them from transparent to dark and back again. (Intercalation is the reversible inclusion of a molecule or ions between two other molecules in multilayered structures or compounds.) In the experiments, the display’s transition to transparent takes a bit of time— about 4 seconds; reverting to its darker form takes under half a second. While this may be suitable for signs that don’t need to change their images that often, the lapse is still too long for display applications that require quick refresh times. The multilayer graphene was produced through chemical vapor deposition in which the graphene is grown on a metal surface inside a furnace. After it’s removed from the furnace, the metal is etched away, leaving a thin film of graphene on the surface of the water in which the etching occurs. Then the paper is simply submersed into the liquid, which transfers the thin film of graphene onto the paper. While the initial experiments showed that there were some issues with oxidation of the doped graphene layers, the researchers believe that this hiccup can be overcome with the addition of a simple polymer coating. In future research, Kocabas and his colleagues are planning to make a fully functional sheet of e-paper with pixels and an integrated driving circuit. They would like to see the process they have developed adapted into a roll-to-roll-compatible manufacturing process.
Categories: Nanotechnology News

PHENOMEN is a FET-Open Research Project aiming to lay the foundations a new information technology

Nanotech-Now - September 21, 2016 - 7:45am
PHENOMEN is a ground breaking project designed to harness the potential of combined phononics, photonics and radio-frequency (RF) electronic signals to lay the foundations of a new information technol...