Update 26.03

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Foresight Institute

Apr 27, 2013, 2:29:02 PM4/27/13
** Precisely placing dangling bonds on a silicon surface

** Foresight Update 26.03 - April 19, 2013
ISSN 1078-9731

** Nanotech News

Discuss these news stories at http://foresight.org/nanodot.

** In this issue:
* Superparamagnetism-explicated-for us
* Atomically precise placement of dangling bonds on silicon surface
* RNA-protein motor for unidirectional movement of DNA in nanomachinery
* Nanotechnology revolution: An interview with Eric Drexler
* Re-engineering a junction to give a new twist to DNA nanotechnology
* New advancement in 3D imaging of nanoparticles at atomic resolution
* Computationally designed peptide sneaks nanoparticles past immune system

** Superparamagnetism-explicated-for us

Even though the sound of it is something quite atrocious, superparamagnetism
may become a familiar term in the context of nanoscale electronics and devices.

Loosely speaking, superparamagnetism is a size-based phenomenon in which
materials that are ferromagnetic on the macroscale - meaning predisposed toward
strong magnetization at room temperature, such as iron and nickel - display
zero net magnetization at nanoparticle sizes. ...

** Atomically precise placement of dangling bonds on silicon surface

We have previously speculated here whether the continued improvement of
technology to place single atoms on silicon with atomic precision for the
purpose of developing practical quantum computers would also lead to more
general methods of atomically precise or molecular manufacturing. That
speculation remains open, but we note that the field of atomically precise
quantum engineering continues to advance ...

** RNA-protein motor for unidirectional movement of DNA in nanomachinery

One of nature's many types of molecular motors combines protein and RNA
subunits to force viral (in this case, bacteriophage) DNA into a protein
capsid. The understanding of the molecular mechanism by which this motor works
has been advanced by the discovery that it revolves the DNA around a central
channel, as the Earth revolves around the sun, rather than by rotating, as the
Earth does about it axis. ...

** Nanotechnology revolution: An interview with Eric Drexler

In anticipation of Eric Drexler's new book, Forbes contributor Bruce Dorminey
interviews him about the meaning of nanotechnology and its revolutionary
prospects. ...

** Re-engineering a junction to give a new twist to DNA nanotechnology

Of all of the paths toward molecular manufacturing, structural DNA
nanotechnology seems to provide the most frequent and photogenic advances. By
re-engineering the Holliday junction, the basic cross-over structure adapted to
build complex structures from DNA, Prof. Hao Yan and his colleagues has been
able to construct a variety of new wire frame and mesh structures. ...

** New advancement in 3D imaging of nanoparticles at atomic resolution

Researchers from UCLA's California NanoSystems Institute and Northwestern
University have combined multiple imaging techniques to produce high quality 3D
images of platinum nanoparticles, allowing advanced visualization of
atomic-scale structural defects (an important advancement over X-ray
crystallography). ...

** Computationally designed peptide sneaks nanoparticles past immune system

Research into using nanotechnology for improved drug delivery continues to
advance as current nanoparticle technology is combined with increasingly more
sophisticated biotechnology. One major problem with using nanoparticles for
targeted drug delivery is that the patient's immune system often clears the
particle before they can be effective. A new approach uses a peptide derived
from an important immune system molecule to fool the immune system. ...

- Nanodot posts by James Lewis (http://www.foresight.org/about/Lewis.html) and
Stephanie C.

** Upcoming Activities of Interest

Imagine Nano 2013 (http://www.imaginenano.com/GENERAL/index.php)
April 23-26, 2013 Bilbao (Spain)
Bringing together Nanoscience & Nanotechnology

Nanotech Conference & Expo 2013 (http://www.techconnectworld.com/Nanotech2013/)
May 12-16, 2013
Washington, DC USA
Don't miss this year in Washington, D.C. as we deliver the World's top
innovations and the Nation's leading R&D agency programs!

/www.asme.org/events-details/conferences/2013-asme-annual-meeting">2013 ASME
Annual Meeting
June 21-26,2013 Indianapolis, Indiana, USA

** About the Foresight Institute
Foreseeing Future Technologies

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