Navigation Links
Nanoparticles digging the world's smallest tunnels
Date:1/23/2013

This press release is available in German.

The world's smallest tunnels have a width of a few nanometers only. Researchers from Karlsruhe Institute of Technology (KIT) and Rice University, USA, have dug such tunnels into graphite samples. This will allow structuring of the interior of materials through self-organization in the nanometer range and tailoring of nanoporous graphite for applications in medicine and battery technology. Results are now presented in the scientific journal Nature Communications (DOI: 10.1038/ncomms2399).

The tunnels are manufactured applying nickel nanoparticles to graphite which then is heated in the presence of hydrogen gas. The surface of the metal particles, that measure a few nanometers only, serves as a catalyst removing the carbon atoms of the graphite and converting them by means of hydrogen into the gas methane. Through capillary forces, the nickel particle is drawn into the "hole" that forms and bores through the material. The size of the tunnels obtained in the experiments was in the range of 1 to 50 nanometers, which about corresponds to one thousandth of the diameter of a human hair.

To furnish proof of the real existence of these graphite tunnels, the researchers have made use of scanning electron and scanning tunneling microscopy. "Microscopes, in fact, image only the upper layers of the sample," the principal authors of the study, Maya Lukas and Velimir Meded from KIT's Institute of Nanotechnology, explain. "The tunnels below these upper layers, however, leave atomic structures on the surface whose courses can be traced and which can be assigned to the nanotunnels by means of the very detailed scanning tunneling microscopy images and based on computerized simulations." In addition, the depth of the tunnels was determined precisely by means of a series of images taken by a scanning electron m
'/>"/>

Contact: Monika Landgraf
presse@kit.edu
49-721-608-47414
Helmholtz Association of German Research Centres
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Marshall study shows nanoparticles used as additives in diesel fuels can travel from lungs to liver
2. Metal nanoparticles shine with customizable color
3. New measuring techniques can improve efficiency, safety of nanoparticles
4. Light touch keeps a grip on delicate nanoparticles
5. Nanoparticles seen as artificial atoms
6. Nanoparticles found in moon glass bubbles explain weird lunar soil behavior
7. Study improves understanding of surface molecules in controlling size of gold nanoparticles
8. Gold nanoparticles could treat prostate cancer with fewer side effects than chemotherapy
9. New structural information on functionalization of gold nanoparticles
10. New imaging technique homes in on electrocatalysis of nanoparticles
11. Lung mucus gel scaffold prevents nanoparticles from getting through
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Nanoparticles digging the world's smallest tunnels
(Date:4/16/2015)... 16, 2015 Proove Biosciences , ... of BIO Contest for the 2015 BIO International ... 2015 BIO International Convention will take place June 15-18 ... the Buzz of BIO contest, industry leaders will be ... at the conference. The community voting period began on ...
(Date:4/16/2015)... April 16, 2015 The Council ... the prestigious 2015 Borlaug CAST Communication Award goes ... at Tuskegee University in Alabama. Award nominees must ... public presentations; and/or the use of television, radio, ... three areas. As a specialist in the field ...
(Date:4/16/2015)... ChemRar High Tech ... R&D group, and Lancet, Russian Distribution Company, ... commercialization of new medicines in ... stimulate the innovative development of the Russian ... ,     (Logo: http://photos.prnewswire.com/prnh/20150416/739742-b) , Through ...
(Date:4/16/2015)... , April 16, 2015  EMD Serono today ... Darmstadt, Germany , appointed ... Head of Global Clinical Development.  Dr. Reicin brings ... experience in Oncology and Immunology. She is an ... served as a Vice President in various capacities ...
Breaking Biology Technology:Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 2Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 3The 2015 Borlaug CAST Communication Award Goes to Channapatna Prakash 2Lancet and ChemRar High Tech Center Have Announced a Partnership in the Development and Production of Novel Drugs in Russia 2Alise Reicin Joins the Biopharmaceutical Business of Merck KGaA, Darmstadt, Germany as Head of Global Clinical Development 2Alise Reicin Joins the Biopharmaceutical Business of Merck KGaA, Darmstadt, Germany as Head of Global Clinical Development 3
... 20, 2010) -- Recently, academic debate has been swirling ... the most ubiquitous of phenomena, including photosynthesis, the process ... particular, physicists have suggested that entanglement (the quantum interconnection ... atoms that are separated in physical space) could be ...
... ,, CHANTILLY, Va. , Aug. 6 ... as director of Chemical-Biological Defense Programs.  In this role, Chotani will lead ... U.S. Army and the Office of the Secretary of Defense, as well ... Health and the Centers for Disease Control. , ...
... Thursday, August 5, 2010 at 4:30 p.m. Eastern Time , ... BOTHELL, WA and VANCOUVER , Aug. 5 /PRNewswire-FirstCall/ - ... unaudited financial results for the three and six months ended June 30, 2010 and ... , , ...
Cached Biology Technology:TASC, Inc. Appoints Rashid Chotani to Lead Chemical-Biological Defense Programs 2TASC, Inc. Appoints Rashid Chotani to Lead Chemical-Biological Defense Programs 3OncoGenex Reports Second Quarter Financial Results 2OncoGenex Reports Second Quarter Financial Results 3OncoGenex Reports Second Quarter Financial Results 4OncoGenex Reports Second Quarter Financial Results 5OncoGenex Reports Second Quarter Financial Results 6OncoGenex Reports Second Quarter Financial Results 7OncoGenex Reports Second Quarter Financial Results 8OncoGenex Reports Second Quarter Financial Results 9
(Date:3/26/2015)... The Granite Club, ... club, today announced it has implemented a state-of-the-art access ... for members and staff, while restricting access to authorized ... selected FST,s IMID Access system because it has the ... and staff, in addition to unparalleled security," said ...
(Date:3/24/2015)... March 24, 2015   NexID Biometrics LLC, ... security-authentication needs, today announced the beginning of shipments of ... The company, based in Potsdam, ... three-day Connect:ID Expo, which began here today at the ... version 2.0 of its SDK boosts the accuracy rate ...
(Date:3/23/2015)... 2015   HOYOS Labs , a leading global ... that the Company will demonstrate multiple biometrics-based technologies under ... at Connect:ID on March 23 through 25, 2015, in ... highlight the IEEE Biometric Open Protocol Standard; free biometrics-based ... access control system. BOPS was invented by HOYOS Labs ...
Breaking Biology News(10 mins):Granite Club First Private Club in North America to Implement FST Biometrics Secure Access Solution, as Part of Multi-million Dollar Expansion 2NexID Begins Shipments Of Version 2.0 Fake-Finger-Detection Solution 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 3
... genes are especially challenging because they combine many ... of non-coding elements (introns). During processing, introns are ... a template for proteins called messenger RNA (mRNA). ... of a functional protein or, worse, produce an ...
... Institute of Dental and Craniofacial Research (NIDCR), part of ... new piece to the puzzle of how tumor cells ... abnormal growth, a well-known process called angiogenesis. , As ... Cell, the scientists found that in addition to the ...
... cancer that is based on infection with a specially designed ... has shown promise in clinical trials. Now, new research suggests ... as well. The study, published in the July issue of ... to viral therapy after they have been incubated at an ...
Cached Biology News:Carnegie Mellon University research reveals how cells process large genes 2Carnegie Mellon University research reveals how cells process large genes 3New lead reported in tumor angiogenesis 2New lead reported in tumor angiogenesis 3Elevated temperature enhances success of viral cancer therapy 2
... Kits are based on well-established periodate ... consistent and reproducible. This kit contains ... protein or antibody, including ready-to-use buffers ... Activated HRP is supplied ready-to-use and ...
Convenient 10X buffer concentrate used to maximize binding to the solid phase in microwell ELISA. Formulated to provide optimal pH and ionic strength for binding of antibodies and some antigens. Co...
... 2-color real-time PCR detection system holds 48 x ... array of 48 LEDs independently excites fluorescence (470-500 ... filtered photodiodes detects emitted light (523-543 nm and ... MJ Mini cycler, whose Peltier heat pumps provide ...
... (EMSA) is a powerful tool for evaluating ... shift or gel retardation, the assay is ... to electrophoresis, free DNA will migrate differently ... Chemiluminescent EMSA Kit is a nonradioactive system ...
Biology Products: