Archive for May, 2010

This week in nanotechnology – May 28, 2010

Nanotechnology researchers build transistor with just seven atoms. Scientists have literally taken a leap into a new era of computing power by making the world’s smallest precision-built transistor – a ‘quantum dot’ of just seven atoms in a single silicon crystal. Despite its incredibly tiny size – a mere four billionths of a meter long [...]

Powe Award supports development of nanocomposites to monitor wind turbine blade structure

Wind turbine blades enjoy a steady wind but can be damaged by gust-induced vibrations. The researcher proposes to create tiny sensor patches that can be selectively placed in key locations where it is anticipated that damage will start. The patches are made of the same base material as the blade but sprinkled with carbon nanotubes, [...]

Outstanding in their field effect

Rice University researchers have discovered thin films of nanotubes created with ink-jet printers offer a new way to make field-effect transistors, the basic element in integrated circuits.

Seen that? – Nanotechnology environmental, health and safety debate heats up

Nanotechnology environmental, health and safety debate heats up Nanotechbuzz The debate over safety in nanotechnology is [...]

This week in nanotechnology – May 21, 2010

UCLA researchers and their collaborators have developed a method that could open the door for investigations into the function of half of all proteins in the human body. The research team has demonstrated nanoscale control over molecules, allowing for the precise study of interactions between proteins and small molecules. Their new technique, in which molecules [...]

EPA announces new definition of the term “nanomaterial”

Source: SingleNews – SafeNano – 13 May, 2010
At a presentation to the Pesticide Programs Dialogue Committee in Washington on the 29th April, William Jordan of the U.S. Environmental Protection Agency (EPA) announced a new working definition of the term nanomaterial as
“an ingredient that contains particles that have been intentionally produced to have at least one [...]

Trophic transfer of TiO2 nanoparticles from daphnia to zebrafish in a simplified freshwater food chain

Source: ICON – 13 May, 2010
Researchers from Arizona State University, the Georgia Institute of Technology, both in the United States, and Tsinghua University, China, have provided the first direct evidence that nanoscale titanium dioxide (nTiO2) particles can transfer from a low trophic level organism (daphnia, Daphnia magna) to a high trophic level organism (zebrafish) by [...]

Nanosensors could detect airborne toxins instantly

A small device using a silicon chip in a mobile phone can help in detecting the airborne toxins such as gas leakage or any other hazardous material present in the air in real time. The tiny silicon chip will act as sensitive nose and will respond immediately through cell phone networks. The developers of the [...]

Graphane yields new potential

Researchers mentored by Boris Yakobson, a Rice professor of mechanical engineering and materials science and of chemistry, have discovered the strategic extraction of hydrogen atoms from a 2-D sheet of graphane naturally opens up spaces of pure graphene that look — and act — like quantum dots.

Inspired by a cotton candy machine, engineers put a new spin on creating tiny nanofibers

Hailed as a “cross between a high-speed centrifuge and a cotton candy machine,” bioengineers at Harvard have developed a new, practical technology for fabricating tiny nanofibers. The reference by lead author Mohammad Reza Badrossamay to the fairground treat of spun sugar is deliberate, as the device literally — and just as easily — spins, stretches [...]