Navigation Links
Successful Test Of Single Molecule Switch Opens The Door To Biomolecular Electronics

as nano-scale electronic components such as switches, photoelectric devices and hydrogen generators, some major technical problems have stymied further research. The first of these has been the difficulty in making reliable connections with single molecules to test their electronic behavior. Recently, this problem may have been solved by using the scanning probe microscope to make and measure single-molecule contacts, with molecules designed to bond at their ends with a surface and the probe tip.

The second problem has been that these connected molecules have failed to exhibit the predicted electrical properties when tested without a conducting solution. Physicists attempting these measurements avoided using electrolyte solutions because the applied current would leak into the surrounding solution. Lindsay and his team solved this problem by applying an insulating coating to the entire probe, except its very tip, so there was minimal electrical contact with the solution.

According to Lindsay, the solution is required to make the process work because, without it, the initial insulating property of the molecule prevents the first electron from ever jumping on to the molecule, a kind of “Catch-22.?Ions in the solution “jiggle?the molecule enough to bring about an unusual configuration of the molecule that does allow the electrons from the electrodes to jump on to the molecule, a process first pointed out by Rudy Marcus of Cal Tech (for which he was awarded the 1992 Nobel prize in chemistry).

The oligoaniline molecule the team tested has three electrical states: a neutral state where it is an insulator, a second state where electrons are removed to oxidize the molecule and make it a conductor, and a third state where more electrons are removed and turn it back into an insulator. By measuring the connected molecule in a sulfuric acid solution, the team was able to make reproducible measurements showing all three states by measuring the current thr
'"/>

Source:Arizona State University


Page: 1 2 3

Related biology news :

1. Visceral Leishmaniasis: Successful Vaccine Trial In Dogs
2. Penn Surgeons Use Completely Robotic Surgery to Successfully Treat Prostate Cancer
3. Successful cell engineering may lead to mad cow prevention, say researchers
4. Successful transplantation from pig embryos to mice
5. Successful lung cancer surgery not enough to break nicotine dependence in many smokers
6. Novel Asthma Study Shows Multiple Genetic Input Required; Single-gene Solution Shot Down
7. Single stem cells from bone heal a broken heart
8. Single-donor Islet Transplantation Procedure Shows Promise For Patients With Type 1 Diabetes
9. Single gene is genetic switch for fly sexual behavior
10. Single microRNA causes cancer in transgenic mouse
11. Single cell amoeba increases MRSA numbers 1000- fold
Post Your Comments:
(Date:12/22/2014)... , Dec. 22, 2014 Research and Markets ... of the "The Global Watermarking and Fingerprinting ... http://photos.prnewswire.com/prnh/20130307/600769 This ... media watermarking and fingerprinting markets. Watermarking aims to ...
(Date:12/19/2014)... and Markets ( http://www.researchandmarkets.com/research/8kmfcn/iphone_5s ) has announced ... - Apple/AuthenTec TMDR92 & Sapphire - Technology Report" ... http://photos.prnewswire.com/prnh/20130307/600769 Following the acquisition of AuthenTec ... with the iPhone 5S. It is currently the only ...
(Date:12/19/2014)... VIEW, Calif. , Dec. 18, 2014  23andMe, Inc., the ... study that pinpoints fine-scale differences in genetic ancestry of individuals ... Since immigrants first arrived more than four hundred years ... as a meeting place for peoples from different continents. This ...
Breaking Biology News(10 mins):The Global Watermarking and Fingerprinting Markets 2iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 223andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4
... Infection with West Nile virus (WNV) causes no symptoms ... encephalitis. What determines the outcome of infection with WNV in ... and colleagues, at the Blood Systems Research Institute, San Francisco, ... (immune cells that suppress the function of other immune cells) ...
... New Orleans, LA Dr. John England, Professor and ... analyzed research findings and was responsible for the quality and ... resulting in new guidelines for treating Lou Gehrig,s disease, or ... the October 13, 2009 issue of Neurology , the ...
... target to stem biodiversity loss by next year, according to ... to biodiversity science. The goal was agreed at ... Biological Diversity in April 2003. Some 123 world ministers ... current rate of biodiversity loss at the local, national and ...
Cached Biology News:LSUHSC's England plays key role in developing new ALS treatment guidelines 2World will miss 2010 target to stem biodiversity loss, experts say 2World will miss 2010 target to stem biodiversity loss, experts say 3World will miss 2010 target to stem biodiversity loss, experts say 4World will miss 2010 target to stem biodiversity loss, experts say 5World will miss 2010 target to stem biodiversity loss, experts say 6
(Date:1/22/2015)... 22, 2015 Dr. Greg Leyer of UAS ... Scripps Natural Supplements Pre-Conference seminar on probiotics in San Diego, ... annual continuing education conference for health care professionals. This year’s ... topic of probiotics in health. Dr. Leyer spoke about the ...
(Date:1/22/2015)...   Cypher Genomics, Inc., the leading genome ... SQNM ), the leading molecular diagnostics company, today ... prenatal tests (NIPT). Through this agreement, Sequenom will ... advance analysis of clinically-relevant fetal sub-chromosomal variants detected ...
(Date:12/24/2014)... SILVER SPRING, Md. , Dec. 24, 2014  United ... that Medtronic, Inc. (NYSE: MDT ) has ... and Drug Administration (FDA) for the use of Medtronic,s ... a newly developed catheter) for use with United Therapeutics, ...
(Date:12/24/2014)... Missouri (PRWEB) December 23, 2014 GMO corn ... company, Syngenta, are in the process of being consolidated in ... is In Re: Syngenta AG MIR 162 Corn Litigation, MDL ... of Kansas. , Management of the Syngenta GMO corn multidistrict ...
Breaking Biology Technology:Cypher Genomics and Sequenom Announce Development Agreement 2Cypher Genomics and Sequenom Announce Development Agreement 3Cypher Genomics and Sequenom Announce Development Agreement 4United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4Carey Danis & Lowe Reports on Syngenta GMO Corn Transfer Order 2
... , , SAN FRANCISCO , Feb. ... ) acted as a placement agent in GenVec, Inc.,s (Nasdaq: ... shares of common stock, and warrants to purchase 4.2 million shares ... , (Logo:   http://www.newscom.com/cgi-bin/prnh/20090911/MCFLOGO ) , "We have been working with ...
... ... for Manufacture and Testing of Drug Products Imported to the European Union. ... Toronto, Ontario (PRWEB) ... to leading pharmaceutical companies, today announced successful completion of its recent Health Canada audit. ...
... , FORT LAUDERDALE, Fla. , ... published in EuroIntervention (EuroIntervention, 2010; 5:698-702) demonstrated ... and no late stent thrombosis at one year in ... percutaneous coronary intervention (PCI) and implantation of the company,s ...
Cached Biology Technology:Merriman Curhan Ford Acted as Placement Agent in GenVec's $28 Million Registered Offering 2Merriman Curhan Ford Acted as Placement Agent in GenVec's $28 Million Registered Offering 3Merriman Curhan Ford Acted as Placement Agent in GenVec's $28 Million Registered Offering 4Merriman Curhan Ford Acted as Placement Agent in GenVec's $28 Million Registered Offering 5Merriman Curhan Ford Acted as Placement Agent in GenVec's $28 Million Registered Offering 6Merriman Curhan Ford Acted as Placement Agent in GenVec's $28 Million Registered Offering 7Dalton Pharma Services Announces Successful Completion of Health Canada Inspection 2Dalton Pharma Services Announces Successful Completion of Health Canada Inspection 3OrbusNeich's Genous(TM) Bio-engineered R stent(TM) Demonstrates Good Safety and Clinical Outcomes in Patients with Primary PCI for STEMI 2OrbusNeich's Genous(TM) Bio-engineered R stent(TM) Demonstrates Good Safety and Clinical Outcomes in Patients with Primary PCI for STEMI 3
... produced by a patented microwave process which ... consistent, even cell attachment, increased cell growth ... growth uunder difficult conditions, including reduced serum ... a more ecominic alternative to expensive and ...
Automated Cell Culture Flask...
... Bio-Plex suspension array system, 100-240 V, uses ... up to 100 proteins and peptides in ... composed of up to 100 color-coded bead ... with a unique reactant (enzyme substrates, receptors, ...
Cell Culture Flask, 75 cm, treated polystyrene...
Biology Products: