lrose's blog

posted by: lrose

All of our smaller  designs have come from the statement , There is always room at the bottom”  In order to make things bigger and more efficient and faster.

Nano research is already producing clothes that are water and soil resistant. Research is being done in the realm of medicine– make chemicals or robots to do medical procedures,  self healing paint– scratch your paint – set your car in the sun and in a few hours it will have healed the scratch,  paint that cleans the Air

One Reason for studying nanotechnology is that computers are reaching the limit of the technology for making them as we do now.  We are beginning to explore the crazy ideas for different ways of computing.   For example, quantum dot cellular automata(QCA) and nanotube and nanowires and quantum computers(qbits)

Path for new products

Crazy ideas

Research

Development

Finished products.

Research and development often is blurred together.  Crazy ideas are hard to funding .  and its easier  to get funding for almost finished products.  But almost finished products were crazy ideas 5 or 10 years ago.

the tools for studying surface chemistry at a nanoscale are the SEM, AFM and STM,  We want to discover what are the limitation of each and when each scope would be most useful.

optical 1600′s	SEM 1935	AFM   1986	STM  1981
cm to 500 nm	20 mm  to  1 nm cart ( 100nm)	125 microns  to 1 nm portable -70 micrometers  –.21nm Resolution:  .08nm	500 nm to.5nm z – range can scan 200 nm max normal scan-20 nm  scan max range.01nm-min resolution <0.1 nm
Advantages
Big fields wide range of samples colors                                    faster                           simpler to operate	better resolution than opt lithography view everyday objects      higher res. than optical         large scan range	view any material change tip to study different properties vary mode (contact or tapping) scan liquids	atomic resolution manipulate atoms
Disadvantages
resolution viewing only                    only visible light	vacuum (samples are dead) sample preparation no color time to scan	no   color fragile  tip can damage surface time to scan	surface  conductive must be flat can damage surface time to scan
Type of samples
mobile sample bigger  than 500 nm            biological sample	machined part(materials study) biological sample             must be dead                    needs  special preparation        everything between optical and AFM & STM	topographical info non conductive material     things too large for STM size interaction between a group of tip atoms and a group of surface atoms overview of BIG surface	Molecules atoms surface interactions interaction between one tip atom and one surface atom
vibrations matters least	———————>	———————->	vibrations matter most

Reflections from participants this afternoon

The teachers seemed to be happy with the week.  They have each learned something and all had some suggestions.  each of their powerpoints are uploaded on the nano wiki.  http://nano.michianastem.org/

This entry was posted on Friday, July 16th, 2010 at 10:51 am and is filed under Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.