Navigation Links
A giant step in a miniature world: UZH researcher measures the electrical charge of nano particles
Date:7/30/2012

In order to observe the individual particles in a solution, Prof. Madhavi Krishnan and her co-workers entice each particle into an electrostatic trap. It works like this: between two glass plates the size of a chip, the researchers create thousands of round energy holes. The trick is that these holes have just a weak electrostatic charge. The scientists than add a drop of the solution to the plates, whereupon each particle falls into an energy hole and remains trapped there. But the particles do not remain motionless in their trap. Instead, molecules in the solution collide with them continuously, causing the particles to move in a circular motion. We measure these movements, and are then able to determine the charge of each individual particle, explains Prof. Madhavi Krishnan.

Put simply, particles with just a small charge make large circular movements in their traps, while those with a high charge move in small circles. This phenomenon can be compared to that of a light-weight ball which, when thrown, travels further than a heavy one. The US physicist Robert A. Millikan used a similar method 100 years ago in his oil drop experiment to determine the velocity of electrically charged oil drops. In 1923, he received the Nobel Prize in physics in recognition of his achievements. But he examined the drops in a vacuum, Prof. Krishnan explains. We on the other hand are examining nano particles in a solution which itself influences the properties of the particles.

Electrostatic charge of nano drugs packages

For all solutions manufactured industrially, the electrical charge of the nano particles contained therein is also of primary interest, because it is the electrical charge that allows a fluid solution to remain stable and not to develop a lumpy consistency. With our new method, we get a picture of the entire suspension along with all of the particles contained in it, emphasizes Prof. Madhavi Krishnan. A suspension is a fluid in whi
'/>"/>

Contact: Prof. Dr. Madhavi Krishnan
madhavi.krishnan@uzh.ch
41-446-354-465
University of Zurich
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Exotic particles, chilled and trapped, form giant matter wave
2. picoSpin-45 Miniature NMR Spectrometer Wins R&D 100 Award
3. SRI International Researchers Developing Bioadhesive Gel to Protect Women from HIV and HSV Infections
4. Researchers create highly conductive and elastic conductors using silver nanowires
5. Researchers create rubber-band electronics
6. Cedars-Sinai researchers, with stem cells and global colleagues, develop Huntingtons research tool
7. Penn researchers study of phase change materials could lead to better computer memory
8. Researchers tune the strain in graphene drumheads to create quantum dots
9. WHEATON® Introduces a New Web Community for Scientists, Researchers, and Biopharmaceutical Packagers
10. Stevenage Bioscience Catalyst to Welcome Cambridge University Researchers
11. Syracuse University researchers use nanotechnology to harness power of fireflies
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A giant step in a miniature world: UZH researcher measures the electrical charge of nano particles
(Date:7/30/2014)... EL SEGUNDO, Calif. , July 30, 2014 ... prime contractor on the Fully Integrated Lifecycle Mission ... Aeronautics and Space Administration (NASA). Under the terms ... to Ames Research Center at Moffett Field, Calif. ... management support for bioscience flight development projects on ...
(Date:7/30/2014)... BCC Research ( http://www.bccresearch.com ) reveals ... in Industrial Applications , the global market for industrial ... by 2018, registering a five-year compound annual growth rate ... recorded in the detergent enzyme segment with a CAGR ... has influenced almost every sector of industrial activity, ranging ...
(Date:7/30/2014)... July 30, 2014  Orexigen Therapeutics, Inc. (Nasdaq: ... Day 180 List of Outstanding Issues (LOI) from the ... Use (CHMP) for the NB32 Marketing Authorization Application (MAA). ... an investigational drug candidate being evaluated for weight loss. ... 120 time point were adequately addressed by the Company ...
(Date:7/30/2014)... SAN DIEGO , July 30, 2014   ... that designs and develops novel diagnostics to personalize and ... the appoint of Gregory T. Lucier as ... previously chairman and CEO of Life Technologies (formerly Invitrogen). ... expertise as Epic commercializes its circulating rare cell analysis ...
Breaking Biology Technology:Wyle Wins NASA's Fully Integrated Lifecycle Mission Support Services Contract 2Global Market for Industrial Enzymes to Reach Nearly $7.1 Billion by 2018; Detergent Enzyme Market to Record Maximum Growth 2Global Market for Industrial Enzymes to Reach Nearly $7.1 Billion by 2018; Detergent Enzyme Market to Record Maximum Growth 3Orexigen Receives CHMP Day 180 List of Outstanding Issues 2Orexigen Receives CHMP Day 180 List of Outstanding Issues 3Epic Sciences Appoints Greg Lucier as Chairman of the Board of Directors 2Epic Sciences Appoints Greg Lucier as Chairman of the Board of Directors 3
... MADISON -- The same chemical reaction that causes iron to ... stress chips away at healthy cells and is a process, ... conditions in humans ranging from Alzheimer,s, heart disease and stroke ... writing in the current edition (Feb. 21, 2008) of the ...
... N.C., Feb. 20 Addrenex,Pharmaceuticals has reached its ... a new drug application (NDA) for its first ... Food and Drug,Administration, Addrenex and its licensing partner ... first half of 2009., Addrenex has moved ...
... SGI Altix, Altix XE Cluster and SGI InfiniteStorage ... Environment for All Stages of Research, SUNNYVALE, ... Annual Lorne Genome Conference -- To create an ... bioinformatics,research, the Malaysia Genomics Institute (MGI) selected SGI ...
Cached Biology Technology:Genetic pathway critical to disease, aging found 2Genetic pathway critical to disease, aging found 3Addrenex Pharmaceuticals Reaches Milestone with Filing of NDA for First Product, CloniBID, to Treat Hypertension 2Malaysia Genome Institute Advances Bioinformatics Research Using SGI Technology 2Malaysia Genome Institute Advances Bioinformatics Research Using SGI Technology 3Malaysia Genome Institute Advances Bioinformatics Research Using SGI Technology 4
(Date:7/30/2014)... Washington, DCToday scientists unveiled the first high-resolution map ... the entire country of Per. The new and ... a sea change for future market-based carbon economies. ... extremely high ecological diversity and it provides the ... degradation for conservation, land use, and enforcement purposes. ...
(Date:7/29/2014)... in the University of Bristol,s Nutrition and Behaviour Unit ... into account when planning meals. , The research, to ... Ingestive Behavior Conference (SSIB 2014) in Seattle, USA this ... do. , The team was led by Professor Jeff ... Psychology. , As part of a Biotechnology and Biological ...
(Date:7/29/2014)... warms and sea ice retreats, the North is changing. ... open water which is predicted to extend across the ... Storms thus have the potential to create Arctic swell ... unpredictable element to the region. , A University of Washington ... middle of the Arctic Ocean, and detected house-sized waves ...
Breaking Biology News(10 mins):Peru's carbon quantified: Economic and conservation boon 2Peru's carbon quantified: Economic and conservation boon 3Huge waves measured for first time in Arctic Ocean 2Huge waves measured for first time in Arctic Ocean 3
... GEOLOGY ends 2012 with 23 new articles spanning ... Naica Cave, Mexico; Diamantina, Brazil; the Galpagos hotspot; China; ... central West Greenland; the California arc; the Pacific Ring ... Sierra Nevada; Spain; New Zealand; Turkey; Connecticut, USA; and ...
... the extinct giant piranha, or megapiranha, have the most ... body size is taken into account, finds researchers in ... The research paper, Mega-Bites: Extreme jaw forces of living ... which allows them to attack and bite chunks out ...
... RICHLAND, Wash. Pacific Northwest National Laboratory has been ... large amounts of renewable energy until it,s needed, fight ... to the marketplace. The Federal Laboratory Consortium announced ... Richland is receiving three 2013 Excellence in Technology Transfer ...
Cached Biology News:GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 2GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 3GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 4GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 5GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 6GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 7GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 8GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 9GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 10GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 11GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 12GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 13GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 14GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 15GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 16GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 17GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 18GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 19GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury 20Black piranha, megapiranha have most powerful bites of fish living or extinct, finds GW researcher 2PNNL recognized for transferring innovations to the marketplace 2PNNL recognized for transferring innovations to the marketplace 3
... commonly used technique for studying protein function ... on SDS-PAGE and transferred to a membrane ... are probed with specific antibodies. Unlike nucleic ... Southern and Northern blots, it has been ...
... System, Basic Package Superior Protein Detection ... The ProXPRESS 2D Proteomic Imaging System is ... both proteomic and general life science research ... the use of all dyes in the ...
... our Regulatory Edition of Molecular Imaging (MI) ... for life science research and drug discovery ... with U.S. Food and Drug Administrations Code ... Electronic Records; Electronic Signatures [21 CFR Part ...
... OPA1-01009, OPEP-01009 is a 16 amino acid (amino acids 3-18) ... (DFF). The sequence of this peptide is (amino to ... S - V - K - L - R - ... R - K(18). This peptide may be used ...
Biology Products: