Navigation Links
Molecular hula hoop
Date:7/18/2008

This press release is available in German.

Humans have long been trying to make the dream of nanoscopic robots come true. The dream is, in fact, taking on some aspects of reality. Nanoscience has produced components for molecular-scale machines. One such device is a rotor, a movable component that rotates around an axis. Trying to observe such rotational motion on the molecular scale is an extremely difficult undertaking. Japanese researchers at the Universities of Osaka and Kyoto have now met this challenge. As Akira Harada and his team report in the journal Angewandte Chemie, they were able to get "snapshots" of individual molecular rotors caught in motion.

As the subject of their study the researchers chose a rotaxane. This is a two-part molecular system: A rod-shaped molecule is threaded by a second, ring-shaped molecule like a cuff while a stopper at the end of the rod prevents the ring from coming off. The researchers attached one end of the rod to a glass support. To observe the rotational motions of the cuff around the sleeve, the scientists attached a fluorescing side chain to the cuff as a probe.

To observe the rotation of the ring around the rod, the researchers used a microscopic technique called defocused wide-field total internal reflection fluorescence microscopy. This gave snapshots of individual rotaxane molecules in the form of emission patterns. In simplified terms, if the cuff is motionless, the patterns make it possible to calculate the direction in which the probe emits its fluorescent light. This makes it possible to calculate the orientation of the cuff, which remains constant for every snapshot. However, if the cuff is rotating, the emission pattern does not reveal the spatial orientation of the probe.

The researchers showed that the cuff of the rotaxane does not rotate if the sample is dry. However, when it is wet they
'/>"/>

Contact: Akira Harada
harada@chem.sci.osaka-u.ac.jp
81-668-505-445
Wiley-Blackwell
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Center for Molecular Medicine Only Regional Provider of Test Suggested in FDA Alert on Prescribing Codeine to Nursing Mothers
2. Amsterdam Molecular Therapeutics to Release H1 2007 Results on August 29, 2007
3. Amsterdam Molecular Therapeutics Reports Half Year Results 2007
4. Rosetta Genomics to Present at the American Association of Cancer Research (AACR) "Molecular Diagnostics in Cancer Therapeutic Development" Conference
5. Glycominds Joins Biomolecular Photonic (BMP) Consortium to Develop New Molecular Imaging Technique
6. Former Pfizer Director of Inflammation Molecular Sciences to Spearhead Velcura Therapeutics Inflammatory Disease Initiatives
7. Sunesis Pharmaceuticals to Present Data at the AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics
8. Astex Drug Candidates to be Featured at the 2007 AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics
9. Center for Molecular Medicine One of the First Midwest Labs to Offer Advanced Test for Patients with Metastatic Breast Cancer
10. Delivering Molecular Imaging Solutions Across Clinical Specialties: Siemens Showcases New Technologies at RSNA 2007
11. Center for Molecular Medicine Offers Xceed Ziplex(TM) Services to Research Community
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Molecular hula hoop
(Date:12/19/2014)... Bina Technologies, Inc. (Bina, Redwood ... have been acquired by Roche (SIX: RO, ROG; OTCQX: ... company that provides a big data platform for centralized ... for the academic and translational research markets.  Bina will ... continue to focus on development of their innovative genomic ...
(Date:12/19/2014)... Fayetteville, Arkansas (PRWEB) December 18, 2014 ... plans to locate its pilot production facility and ... further develop and produce innovative new materials that ... was chosen not only because of its historic, ... regional leaders’ efforts to attract leading edge, technology-based ...
(Date:12/19/2014)... MA (PRWEB) December 18, 2014 iLab ... announced the appointment of Siri Bryant as the new ... new Director of Core Implementations. These two new leadership ... outstanding customer service by ensuring that iLab continues to ... “In the last four years, iLab has been deployed ...
(Date:12/19/2014)... , Dec. 18, 2014  Decision Resources Group finds ... biomaterial market will grow moderately through 2023 as the ... growing awareness of dental biomaterials all spur procedure volumes. ... as China and ... dental procedures within reach for a larger proportion of ...
Breaking Biology Technology:Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 2Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 3Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 4iLab Solutions Announces Two New Leadership Positions to Meet the Needs of Its Growing Customer Base 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 3
... May 13 A guide to BRCA1 and ... resource is designed to equip physicians and other healthcare professionals who are ... the complexities of BRCA1/2 gene testing. , ... According to the American Cancer Society, ...
... TIANJIN, China , May 13 /PRNewswire-Asia/ -- A ... of,Biotechnology and Medicine (TJAB) and Genzyme Corporation was held in the,Tianjin ... , , ... executives including Rao Zihe, President of TJAB and,President of Nankai University, ...
... May 13  Fibrocell Science, Inc. (OTC Bulletin ... of autologous cell therapies for aesthetic, medical and scientific ... study (IT-H-001) of azficel-T, an autologous cell therapy currently ... (FDA) for the treatment of moderate to severe nasolabial ...
Cached Biology Technology:Hayes, Inc. Releases Guide to BRCA1 and BRCA2 Genetic Testing 2Tianjin International Joint Academy of Biotechnology and Medicine, Genzyme Enter into Strategic Partnership 2Fibrocell Science, Inc. Initiates Histology Study of azficel-T 2Fibrocell Science, Inc. Initiates Histology Study of azficel-T 3
(Date:12/17/2014)... RALEIGH, N.C. , Dec. 16, 2014 ... has licensed its PerformTek biometric technology to industry leaders ... their highly accurate, clinically validated, biometric wearable products. These ... January 6-9 in Las Vegas . ... the technology is accurate, flexible and robust – with ...
(Date:12/11/2014)... , Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced ... the APAC Region 2015-2019"  report to their offering. ... this market is advances in technology. With continuous ... biometric solutions to the latest standard that meets ...
(Date:12/10/2014)... NEW YORK , Dec. 8, 2014 You,ve ... online banking account but can,t remember your password, site key ... birthday? Who was your first grade teacher? ... launches the app that will finally put an ... PINs – 1U TM . 1U leverages a ...
Breaking Biology News(10 mins):Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3
... Geology articles this month are open access: "Steady ... during fault slip: Evidence from the rock record." Other ... whale "intestinal products" in central Italy to flooding as ... new findings via the Compact Reconnaissance Imaging Spectrometer for ...
... fatal case of potato poisoning: James B. Matheney of Vandalia, ... tubers, which had turned green due to sunlight exposure. Two ... wife, two daughters and four sons -- showed symptoms of ... the potatoes, and a breast-fed baby boy. His wife, aged ...
... years ago, two former Stanford University postdoctoral fellows, one ... the Harvard Stem Cell Institute (HSCI) in Cambridge, began ... healthy blood cells. What was it, they asked, that ... And after almost a decade of bicoastal collaboration, ...
Cached Biology News:Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 2Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 3Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 4Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 5Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 6Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 7Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 8Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 9Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 10Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 11Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 12Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 13Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 14Ancient whale coprolites, fault slickensides, shergottites, Ediacara, and Cascadia 15The pathway to potato poisons 2Cross-country collaboration leads to new leukemia model 2Cross-country collaboration leads to new leukemia model 3
Mouse monoclonal [LPL4A.1] to Plastin L ( Abpromise for all tested applications). SwissProtID: P13796...
Component of HyperMu™ Insertion Kit...
Recombinant Rhesus Macaque IFN-alpha...
chk 1 kinase...
Biology Products: