Navigation Links
New paper offers breakthrough on blinking molecules phenomenon
Date:8/11/2010

A new paper by University of Notre Dame physicist Boldizsr Jank and colleagues offers an important new understanding of an enduring mystery in chemical physics.

More than a century ago, at the dawn of modern quantum mechanics, the Noble Prize-winning physicist Neils Bohr predicted so-called "quantum jumps." He predicted that these jumps would be due to electrons making transitions between discrete energy levels of individual atoms and molecules. Although controversial in Bohr's time, such quantum jumps were experimentally observed, and his prediction verified, in the 1980s. More recently, with the development of single molecule imaging techniques in the early 1990s, it has been possible to observe similar jumps in individual molecules.

Experimentally, these quantum jumps translate to discrete interruptions of the continuous emission from single molecules, revealing a phenomenon known as fluorescent intermittency or "blinking."

However, while certain instances of blinking can be directly ascribed to Bohr's original quantum jumps, many more cases exist where the observed fluorescence intermittency does not follow his predictions. Specifically, in systems as diverse as fluorescent proteins, single molecules and light harvesting complexes, single organic fluorophores, and, most recently, individual inorganic nanostructures, clear deviations from Bohr's predictions occur.

As a consequence, virtually all known fluorophores, including fluorescent quantum dots, rods and wires, exhibit unexplainable episodes of intermittent blinking in their emission.

The prevailing wisdom in the field of quantum mechanics was that the on and off blinking episodes were not correlated. However, at a 2007 conference on the phenomenon sponsored by Notre Dame's Institute for Theoretical Sciences, which Jank directs, Fernando Stefani of the University of Buenos Aires presented research suggesting that there was, in fact, correlation between these on and off events.
'/>"/>

Contact: Boldizsar Janko
jano.2@nd.edu
574-850-9850
University of Notre Dame
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Live Webinar: Lonza's Paperless EM Success and Acquisition of MODA
2. Webinar Alert: Managing Paper at Its Roots: Extending Beyond Document Management to Enterprise Content Compliance
3. Live Webinar: Paperless QC Micro Implemented by Talecris Biotherapeutics
4. Berkeley Lab scientists create molecular paper
5. 'Cancer Research' Has Published a Paper on the Activity of MM-121, an ErbB3 Inhibitor, in Ligand-dependent Tumors
6. Nanotechnology sparks energy storage on paper and cloth
7. Adaptive Trial Paper Explores Benefits of Adaptive Trials for Phase I, Phase II Studies
8. PharmAthene Submits White Paper to BARDA for Advanced Development Funding for SparVax(TM) - Novel Recombinant Protective Antigen Anthrax Vaccine
9. Dip ordinary paper into ink infused with nanotubes and nanowires to create an instant battery
10. Free Organic Electronics White Paper Discusses Rfid Tags, OLED, AM OLED, PM OLED, Electroluminescence, e-Paper, OE Market Forecast
11. PharmSource Releases White Paper on Role of U.S. Foreign Corrupt Practices Act (FCPA) in the Bio/Pharma Industry
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/27/2015)... February 27, 2015 Immunovaccine Inc. ... immunotherapy company, today announced that the U.S. Food ... Fast Track designation and Phase I clinical trials ... with the mutual co-development agreement signed with Gilead ... Track designation for the DPX-Survivac. , “We have ...
(Date:2/27/2015)... (PRWEB) February 27, 2015 FamilyFarms Group ... General Manager of State Line Farms, received the 2015 ... a producer, under the age of 35, who has ... is an honor to win the Tomorrow's Top Producer ... who won the Top Producer Award and learning from ...
(Date:2/26/2015)... , Feb. 26, 2015 S&P Capital ... Factual Stock Report coverage on MabVax Therapeutics Holdings Inc ... is a clinical stage biotechnology company focused on the ... medical needs in the treatment of cancer. MabVax has ... on the protective immune responses generated by patients who ...
(Date:2/26/2015)... --  Synageva BioPharma Corp. (NASDAQ: ... for rare disorders, today reported 2014 full year ... objectives, and financial guidance.  Synageva,s management team will ... EST to review the financial results and provide ... call by telephone, please dial (877) 445-4603 for ...
Breaking Biology Technology:Immunovaccine Inc. (TSX: IMV) receives Fast Track and Phase I trial approval for Ebola and Anthrax vaccine programs, signs co-development agreement with Gilead Sciences 2Immunovaccine Inc. (TSX: IMV) receives Fast Track and Phase I trial approval for Ebola and Anthrax vaccine programs, signs co-development agreement with Gilead Sciences 3Matt Sims Receives the 2015 Tomorrow’s Top Producer Horizon Award 2S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 2S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 3S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 4S&P Capital IQ Initiates Coverage on MabVax Therapeutics Holdings Inc. in S&P Capital IQ Factual Stock Reports 5Synageva BioPharma Reports 2014 Full Year Financial Results 2Synageva BioPharma Reports 2014 Full Year Financial Results 3Synageva BioPharma Reports 2014 Full Year Financial Results 4Synageva BioPharma Reports 2014 Full Year Financial Results 5Synageva BioPharma Reports 2014 Full Year Financial Results 6Synageva BioPharma Reports 2014 Full Year Financial Results 7Synageva BioPharma Reports 2014 Full Year Financial Results 8Synageva BioPharma Reports 2014 Full Year Financial Results 9
... writing a series of articles on raising capital from angel ... Placement Memorandums, or PPMs, and is co-written with Dan Ghoca. ... is necessary to use a private placement memorandum (also referred ... securities to angel investors in a private placement. Once we ...
... on the use of the country's network infrastructure may ... not capture the true essence of the total importance ... economic development. Forget the Digital Divide and view our ... Digital Desert that affects every level of the economic ...
... partner with the law firm Michael Best & Friedrich ... director of government affairs . , , Milwaukee, ... has announced $200 million in new financing for cellulosic ... with projects that may include everything from research and development ...
Cached Biology Technology:When raising capital, why use a Private Placement Memorandum? 2When raising capital, why use a Private Placement Memorandum? 3When raising capital, why use a Private Placement Memorandum? 4When raising capital, why use a Private Placement Memorandum? 5Bridging the digital divide is the wrong battle cry 2Bridging the digital divide is the wrong battle cry 3Bridging the digital divide is the wrong battle cry 4Wisconsin applicants urged to pursue DOE funding for cellulosic biomass 2
(Date:2/18/2015)... (NASDAQ: CPHD ) today announced that its executives ... to participate via webcast. , Cowen and Company Health ... 3, 2015 at 11.20 a.m. Eastern Time , Raymond ... Wednesday, March 4, 2015 at 10.25 a.m. Eastern Time ... these events, please visit Cepheid,s website at http://ir.cepheid.com ...
(Date:2/11/2015)... , February 11, 2015 ... research report "Access Control Market by Product (Cards and ... Residential, Military and Defense, Government, Industrial, Healthcare, Education) and ... published by MarketsandMarkets, the Access Control Market ... 2020, growing at a CAGR of 10.6% ...
(Date:2/5/2015)... 2015  Marken is starting its 35 th ... a new marketing campaign to solidify its place as ... campaign focuses on First as a primary ... The first headline in the series, ... its client,s priorities. Marken recognizes the need to protect ...
Breaking Biology News(10 mins):Cepheid to Webcast Upcoming Financial Presentations 2Access Control Market Worth $10.4 Billion by 2020 2Access Control Market Worth $10.4 Billion by 2020 3Access Control Market Worth $10.4 Billion by 2020 4Marken Launches New Patient-Centric Campaign 2
... study, "Socioeconomic Conditions Along the World,s Tropical Coasts: 2008," ... healthy coral reefs in 27 tropical nations and points ... decades-old recommendations as a significant barrier to coral reef ... quadrennial "Status of Coral Reefs of the World: 2008" ...
... of the bowel can have genetic causes. Researchers at ... have discovered this correlation. The causes of what is ... most common disorders of the gastrointestinal tract, are considered ... results from Heidelberg, which were published in the prestigious ...
... Michigan State University chemist could eventually lead to a ... are key to treating a number of diseases, including ... manufacture and research often are made within genetically modified ... tends to collect into what scientists call inclusion bodies. ...
Cached Biology News:First-ever socioeconomic study on coral reefs points to challenges of coastal resource management 2First-ever socioeconomic study on coral reefs points to challenges of coastal resource management 3Irritable bowel syndrome can have genetic causes 2
... tested on rat tissue extracts (liver, kidney, spleen, ... cerevisae ) extract. It was also tested with ... lines. Application: A simple and reliable method for ... the detection of the inorganic phosphate released from ...
... the leader in electroporation products and specialty ... product line for experiment optimization and large ... a breakthrough in Molecular Delivery. The days ... that typically limited the number of samples ...
... 20 System revolutionizes DNA sequencing, delivering sequence ... The Genome Sequencer 20 System includes: ... consumables for library construction, amplification, and sequencing ... novo assembly The instrument ...
... RapidVUE is a particle shape and size analyzer ... designed with the utmost simplicity in mind. It ... module and an optical bench. The system is ... easy upgrade for different applications such as dry ...
Biology Products: