Small notes

August 1st, 2006

Oak Ridge National Laboratory has won some awards. 

ORNL scientists noted for nanotech

The method (NanoFermentation) works at or near room temperature and uses conventional equipment, a straightforward fermentation process and natural rather than genetically engineered bacterial strains. It promises to allow production of tailored nanomaterials in economic quantities, potentially stimulating interest in the development of new and expanded applications.

They won awards to for two inventions in separate contest. Their high-temperature superconducting wire technology won the other award. 

Stephen Kevan and his team are using a very familiar technique: taking an atom’s wave nature to create smooth wave fronts, such as those found in laser light. They accomplished this using helium. Details:

The nozzle used in the experiments is similar to one on a garden hose. However, it utilizes a micron-sized glass capillary, borrowed from patch-clamp technology used in neuroscience. The capillary, smaller than a human hair, provides very small but bright-source atoms that can then be scattered from a surface. This distribution of scattered atoms is measured with high resolution using a field ionization detector.

The helium atoms advance with de Broglie wavelengths similar to X-rays, but are neutral and non-damaging to the surface involved. Kevan’s team was able to measure single-slit diffraction patterns as well as speckle patterns made on an irregularly shaped object.  

Of course, now they’re working on developing an ‘atom camera’. Getting the speckle diffraction patterns back in days rather than seconds seems to be a bit sub-optimal. Check out the article here.

Technology

Now that’s a question

July 31st, 2006

And so it begins

July 31st, 2006

I know you have questions. Lots of questions. 

But lets talk about that later.

First, lets talk about something of importance.  I was reading an article by Mike (Mihail) Roco and it somewhat surprised me.  Here it is:

After 2015-2020, the field will expand to include molecular nanosystems–heterogeneous networks in which molecules and supramolecular structures serve as distinct devices. The proteins inside cells work together this way, but whereas biological systems are water-based and markedly temperature-sensitive, these molecular nanosystems will be able to operate in a far wider range of environments and should be much faster.

You can read the rest of it here. His timetable seemed a bit aggressive at first, then I started thinking about it. What I realized is that I’ve been saying this for the last two years. It’s more than just knocking on our doorstep.  It’s here.

Technology