Navigation Links
S-t-r-e-t-c-h-i-n-g electrical conductance to the limit
Date:12/5/2011

Individual molecules have been used to create electrical components like resistors, transistors and diodes, that mimic the properties of familiar semiconductors. But according to Nongjian (NJ) Tao, a researcher at the Biodesign Institute at Arizona State University, unique properties inherent in single molecules may also allow clever designers to produce novel devices whose behavior falls outside the performance observed in conventional electronics.

In research appearing in today's issue of Nature Nanotechnology, Tao describes a method for mechanically controlling the geometry of a single molecule, situated in a junction between a pair of gold electrodes that form a simple circuit. The manipulations produced over tenfold increase in conductivity.

The unusual, often non-intuitive characteristics of single molecules may eventually be introduced into a broad range of microelectronics, suitable for applications including biological and chemical sensing; electronic and mechanical devices.

Delicate molecular manipulations requiring patience and finesse are routine for Tao, whose research at Biodesign's Center for Bioelectronics and Biosensors has included work on molecular diodes, graphene behavior and molecular imaging techniques. Nevertheless, he was surprised at the outcome described in the current paper: "If you have a molecule attached to electrodes, it can stretch like a rubber band," he says. "If it gets longer, most people tend to think that the conductivity will decrease. A longer wire is less conductive than a shorter wire."

Indeed, diminishing conductivity through a molecule is commonly observed when the distance between the electrodes attached to its surface is increased and the molecule becomes elongated. But according to Tao, if you stretch the molecule enough, something unexpected happens: the conductance goes upby a huge amount. "We see at least 10 times greater conductivity, simply by pulling the molecul
'/>"/>

Contact: Joseph Caspermeyer
Joseph.Caspermeyer@asu.edu
Arizona State University
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. New carbon material shows promise of storing large quantities of renewable electrical energy
2. Paperwork: Buckypapers clarify electrical, optical behavior of nanotubes
3. Gold solution for enhancing nanocrystal electrical conductance
4. Integrated Electrical Services Awarded Contract to Provide Electrical Systems for U.S. Army Medical Research Institute of Infectious Diseases
5. Penn material scientists turn light into electrical current using a golden nanoscale system
6. Measuring the electrical properties of nano-crystals
7. New research shows how light can control electrical properties of graphene
8. 3-D printing method advances electrically small antenna design
9. Enhanced electrical energy storage may result from professors research
10. Piezoelectric nanowires allow electrical signals to be produced from mechanical actions
11. How graphenes electrical properties can be tuned
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
S-t-r-e-t-c-h-i-n-g  electrical conductance to the limit
(Date:9/19/2014)... St. Paul, Minnesota (PRWEB) September 19, 2014 ... representatives from related food industries will gather October ... Meeting at the Rhode Island Convention Center in ... exhibition will feature the work of food scientists, ... development, quality control, and food production management. To ...
(Date:9/18/2014)... USA (PRWEB) September 18, 2014 Bipartisan ... of a bill designed to stimulate development and commercialization ... is being praised by leaders of SPIE, the ... the Revitalizing American Manufacturing and Innovation (RAMI) Act, now ... bill’s authors have said they are optimistic that it ...
(Date:9/18/2014)... A novel robotic system that can operate ... being tested as part of a biomedical research partnership ... the aim of determining if the robot, in conjunction ... faster, more accurate, less costly, and less discomforting for ... to deliver prostate cancer therapies with greater precision. , ...
(Date:9/18/2014)... 18, 2014 On Tuesday, Secretary of ... Jim Risch for National Lab Day on the Hill. ... the national laboratory system. Durbin and Risch also formally ... increase awareness of the reach of the national labs ... to address some of our nation's most pressing challenges. ...
Breaking Biology Technology:Latest Research on Cereal Grain Quality, Health Benefits and Food Production to be Presented During the AACC International Annual Meeting 2Latest Research on Cereal Grain Quality, Health Benefits and Food Production to be Presented During the AACC International Annual Meeting 3House passage of high-tech manufacturing bill is move toward stronger economy, say SPIE leaders 2House passage of high-tech manufacturing bill is move toward stronger economy, say SPIE leaders 3Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 2Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 3Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 4Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 5Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 6Lab Day Highlight Labs' Contribution to U.S. Competitiveness and Innovation 2Lab Day Highlight Labs' Contribution to U.S. Competitiveness and Innovation 3
...  PinneyAssociates, Inc., a health care consulting firm with offices in ... following promotions, effective 1 January 2012: , Karen ... , Lucy Owen, to Vice President, Program Operations and Over-the-Counter ... , Joe Gitchell, to President , John Pinney, ...
... Minn., Jan. 23, 2012 Pregnant women who suffer ... a new option: B-Nexa ® , a prescription prenatal ... is designed specifically with B vitamins and ginger ... the most common symptom of pregnancy.(1,2)  "Morning sickness" is ...
... (NYSE Amex: NBS ) ("NeoStem" or the "Company"), ... development, today announced that its Chief Medical Officer, the lead ... for AMR-001 for preservation of heart function in post acute ... Progenitor Cell Therapy, LLC , have been invited to present ...
Cached Biology Technology:PinneyAssociates Announces Senior Staff Promotions 2Upsher-Smith Launches B-Nexa® Prescription Prenatal Vitamin With B Vitamins and Ginger for Nausea and Vomiting of Pregnancy 2Upsher-Smith Launches B-Nexa® Prescription Prenatal Vitamin With B Vitamins and Ginger for Nausea and Vomiting of Pregnancy 3Upsher-Smith Launches B-Nexa® Prescription Prenatal Vitamin With B Vitamins and Ginger for Nausea and Vomiting of Pregnancy 4Senior Management of NeoStem and Its Subsidiaries Invited to Speak at Seventh International Conference on Cell Therapy for Cardiovascular Disease 2Senior Management of NeoStem and Its Subsidiaries Invited to Speak at Seventh International Conference on Cell Therapy for Cardiovascular Disease 3Senior Management of NeoStem and Its Subsidiaries Invited to Speak at Seventh International Conference on Cell Therapy for Cardiovascular Disease 4
(Date:9/19/2014)... it the Jimmy Durante of dinosaurs a ... profile. The new dinosaur, named Rhinorex condrupus ... and Brigham Young University, lived in what is ... the Late Cretaceous period. , Rhinorex, which translates ... a close relative of other Cretaceous hadrosaurs like ...
(Date:9/19/2014)... years has adapted to the arctic cold, and then you ... for you. , This is happening to the small white ... called nonylphenol, comes from the use of certain detergents, pesticides ... disruptor, but when entering the worm it has another dangerous ... in its body from cold damage. , Enchytraeus albidus ...
(Date:9/18/2014)... in the primitive brainstem has revealed how we fall ... of Medicine and the University at Buffalo School of ... "sleep node" identified in the mammalian brain whose activity ... deep sleep. , Published online in August in ... of all of the brain,s sleep-promoting activity originates from ...
Breaking Biology News(10 mins):New hadrosaur noses into spotlight 2Environmental pollutants make worms susceptible to cold 2Environmental pollutants make worms susceptible to cold 3No sedative necessary: Scientists discover new 'sleep node' in the brain 2
... introducing expression of a special green-algae gene into ... researchers have been able to elicit specific behavioral ... The work paves the way for better understanding ... with muscles, to regulate behavior in intact, living ...
... the film classic "Flowers for Algernon," but adds a happy ... drugs, to reverse the attention deficits linked to the leading ... of Current Biology reports the findings, which were studied in ... , The results proved so hopeful, that the ...
... A team of scientists led by Priscilla Cooper, a ... the Department of Energy's Lawrence Berkeley National Laboratory, has ... repair (TCR), an essential but still mysterious mechanism of ... information from a cell's DNA is being transcribed into ...
Cached Biology News:Algal protein in worm neurons allows remote control of behavior by light 2Recreating 'Flowers for Algernon' with a happy ending 2Recreating 'Flowers for Algernon' with a happy ending 3Discovering the first steps in transcription-coupled repair 2Discovering the first steps in transcription-coupled repair 3Discovering the first steps in transcription-coupled repair 4Discovering the first steps in transcription-coupled repair 5Discovering the first steps in transcription-coupled repair 6
...
Monoclonal Anti-Cystatin A tissue culture supernatant Solution containing 15 mM sodium azide human cystatin A ...
... The Staccato Application Series are a ... designed to provide fast and reliable ... proven and robust "automation-friendly" building blocks, ... that cost less than conventional approaches, ...
... microcapillary flow cytometry accessible to anyone in ... appreciate the latest addition to Guavas on-demand ... surprising affordable, and very compact for higher ... features as absolute cell counts, 6 parameters ...
Biology Products: