Navigation Links
Team Invents Device For Weighing Individual Molecules

ely in physics labs, the researchers are then able to evaluate extremely subtle changes in mass of the nanodevice, and therefore, the weight of the added atoms or molecules.

Roukes says that their current generation of devices is sensitive to added mass at the level of a few zeptograms, which is few billionths of a trillionth of a gram. In their experiments this represents about thirty xenon atoms-- and it is the typical mass of an individual protein molecule.

"We hope to transform this chip-based technology into systems that are useful for picking out and identifying specific molecules, one-by-one--for example certain types of proteins secreted in the very early stages of cancer," Roukes says.

"The fundamental problem with identifying these proteins is that one must sort through millions of molecules to make the measurement. You need to be able to pick out the 'needle' from the 'haystack,' and that's hard to do, among other reasons because 95 percent of the proteins in the blood have nothing to do with cancer."

The new method might ultimately permit the creation of microchips, each possessing arrays of miniature mass spectrometers, which are devices for identifying molecules based on their weight. Today, high-throughput proteomics searches are often done at facilities possessing arrays of conventional mass spectrometers that fill an entire laboratory and can cost upwards of a million dollars each, Roukes adds. By contrast, future nanodevice-based systems should cost a small fraction of today's technology, and an entire massively-parallel nanodevice system will probably ultimately fit on a desktop.

Roukes says his group has technology in hand to push mass-sensing technology to even more sensitive levels, probably to the point that individual hydrogen atoms can be weighed. Such an intricately accurate method of determining atomic-scale masses would be quite useful in areas such as quantum optics, in which individual atoms are m
'"/>

Source:Caltech


Page: 1 2 3

Related biology news :

1. Implanted Devices Detect High-Risk Heart Failure Patients
2. Device traps, disables harmful bacteria
3. Device effective in zapping the pain out of migraines
4. Plutonium or greenhouse gases? Weighing the energy options
5. Duke Chemists Isolating Individual Molecules Of Toxic Protein In Alzheimers, Parkinsons Disease
6. Individual differences in a clock gene predict decline of performance during sleep deprivation
7. Individuals and populations differ in gene activity levels, not just genes
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Team Invents Device For Weighing Individual Molecules

(Date:7/28/2014)... a new study suggest two ways to effectively address the ... in obese women, compared to women of a normal body ... researchers say, but as the population has increased in weight, ... obese women. Studies have consistently found that obesity has a ... in turn affect how well the pill prevents pregnancy. ...
(Date:7/28/2014)... Children,s Research Hospital study found that 73 percent of ... risk of developing metabolic syndrome and related health problems ... appear in the current issue of the journal ... adult survivors of childhood cancer in the study had ... like high blood pressure, abdominal obesity, elevated triglyceride and ...
(Date:7/28/2014)... tool that can help advance the genetic engineering ... bioenergy, has been developed by researchers with the ... (JBEI), a multi-institutional partnership led by Lawrence Berkeley ... developed an assay that enables scientists to identify ... critical components in the biosynthesis of plant cell ...
Breaking Biology News(10 mins):Strategies identified to improve oral contraceptive success with obese women 2Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 2Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 3How sweet it is 2How sweet it is 3
... 2012) Eye injuries in war have changed ... tactics, technology and strategies have evolved. Today,s soldiers ... areas not protected by body armor. Military experts and ... and Ear will convene in Boston, Mass., on Sept. ...
... almost $19 million will help to develop technologies ... the National Human Genome Research Institute (NHGRI), part ... During the past decade, DNA sequencing costs ... technologies and process improvements developed by genomics researchers. ...
... time this morning getting your shoes on or thinking about ... suffering with debilitating diseases such as ALS (Lou Gehrig,s disease) ... breathing and eating -- can be a struggle. They ... hopes to help through research that has just been funded ...
Cached Biology News:New NIH/NHGRI grants to harness nanoscale technologies to cut DNA sequencing costs 2New NIH/NHGRI grants to harness nanoscale technologies to cut DNA sequencing costs 3Neurobiologist Rodal wins New Innovator award 2
(Date:7/25/2014)... July 25, 2014 /PRNewswire-iReach/ -- Xybion Corporation, the ... global corporations operating in highly regulated industries, announced ... annual Global User Group Conference, Xybion International Exchange, ... Philadelphia, Pennsylvania at the Sheraton Society ... This year,s conference theme ...
(Date:7/25/2014)... , July 25, 2014 Sinovac Biotech Ltd. (Nasdaq: ... in China , today announced that it ... ended June 30, 2014, after market close on Thursday, August ... prior to the market opening on Friday, August 15, 2014, ... p.m. China Standard Time) to review the Company,s financial results ...
(Date:7/24/2014)... A novel combination of microscopy and data processing has ... National Laboratory an unprecedented look at the surface of ... properties. , The research team led by ORNL,s ... a perovskite manganite, a complex material that exhibits dramatic ... surface behavior could benefit researchers who are interested in ...
(Date:7/24/2014)... , July 24, 2014  Now available is a ... Rehealth Regenerative Therapies , located in ... physically active people a new health option: stem ... of age, countless patients suffer from joint and muscle ... as muscle tears, torn rotator cuff, tennis elbow, and ...
Breaking Biology Technology:Xybion Announces It Will Host International User Conference in Philadelphia 2Xybion Announces It Will Host International User Conference in Philadelphia 3Sinovac to Host Conference Call to Report Second Quarter 2014 Unaudited Financial Results 2ORNL study reveals new characteristics of complex oxide surfaces 2Stem Cells In Sports Injuries, Joints And Muscular Pain 2Stem Cells In Sports Injuries, Joints And Muscular Pain 3
... Va., Nov. 9 CEL-SCI Corporation (NYSE Amex: CVM) ... Professor of Immunology and Microbiology of Northeastern Ohio Universities ... in collaboration with scientists at the Cleveland Clinic and ... was presented at the 7th GTCbio Vaccine: "All Things ...
... ... allowing veterinary research subjects, research facilities and research safety study data to be managed ... ... today that it has unveiled Pristima™ VM, an integrated enterprise software solution for research ...
... As global temperatures and energy costs continue to soar, ... sustainable future. An attractive replacement for gasoline ... Genome Research ( www.genome.org ), scientists have ... clues that will be critical in developing new technologies ...
Cached Biology Technology:CEL-SCI Collaborators Present Data Suggesting That LEAPS Technology Has Ability to Modify Immune Response 2CEL-SCI Collaborators Present Data Suggesting That LEAPS Technology Has Ability to Modify Immune Response 3Xybion Unveils Pristima™ VM, an Integrated Enterprise Software Solution for Vivarium and Veterinary Care Management 2Genomes of biofuel yeasts reveal clues that could boost fuel ethanol production worldwide 2
... The Jouan RCT series of refrigerated ... suited to trapping of low volatility/aqueous solvents ... with RC10 and other vacuum concentrators/centrifugal evaporators. ... in cooling systems such as used in ...
Black 96 Well Plate EB, RE Bottom...
... high durability and capacity with unequalled ease ... prevents vibration, allowing the unit to run ... part, from the large rubber block vibration ... platform is designed to last through years ...
...
Biology Products: