Navigation Links
Nanoparticles assemble by millions to encase oil drops
Date:5/29/2008

HOUSTON -- May 29, 2008 -- In a development that could lead to new technologies for cleaning up oil spills and polluted groundwater, scientists at Rice University have shown how tiny, stick-shaped particles of metal and carbon can trap oil droplets in water by spontaneously assembling into bag-like sacs.

The tiny particles were found to assemble spontaneously by the tens of millions into spherical sacs as large as BB pellets around droplets of oil in water. In addition, the scientists found that ultraviolet light and magnetic fields could be used to flip the nanoparticles, causing the bags to instantly turn inside out and release their cargo -- a feature that could ultimately be handy for delivering drugs.

"The core of the nanotechnology revolution lies in designing inorganic nanoparticles that can self-assemble into larger structures like a 'smart dust' that performs different functions in the world for example, cleaning up pollution," said lead research Pulickel Ajayan, Rice's Benjamin M. and Mary Greenwood Anderson Professor in Mechanical Engineering and Materials Science. "Our approach brings the concept of self-assembling, functional nanomaterials one step closer to reality."

The research was published online today by the American Chemical Society's journal Nano Letters.

The multisegmented nanowires, akin to "nanoscale batons," were made by connecting two nanomaterials with different properties, much like an eraser is attached to the end of a wooden pencil. In the study, the researchers started with carbon nanotubes -- hollow tubes of pure carbon. Atop the nanotubes, they added short segments of gold. Ajayan said that by adding various other segments -- like sections of nickel or other materials -- the researchers can create truly multifunctional nanostructures.

The tendency of these nanobatons to assemble in water-oil mixtures derives from basic chemistry. The gold end of the wire is water-loving, or hydrophi
'/>"/>

Contact: Jade Boyd
jadeboyd@rice.edu
713-348-6778
Rice University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Environmental fate of nanoparticles depends on properties of water carrying them
2. Researchers mimic bacteria to produce magnetic nanoparticles
3. MIT: Remote-control nanoparticles deliver drugs directly into tumors
4. Novel 3-D cell culture model shows selective tumor uptake of nanoparticles
5. Analysis of millions of US births shows association between birth defects and preterm birth
6. New Swedish research hope for millions of sufferers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/15/2014)... -- While we may still be a few years away from ... to gain instant access to all that ailed his patients, ... tablets for monitoring and measuring our health are cropping up ... a tad Orwellian to some, but a new survey suggests ... opportunities into their healthcare regime. These are some ...
(Date:11/7/2014)... by Dr. Debra Auguste, associate professor, biomedical engineering, ... City College of New York, have identified a ... one of the most aggressive forms of breast ... a high mortality rate owing to aggressive proliferation ... options. However, Professor Auguste,s team, discovered the overexpression ...
(Date:11/6/2014)... deaths occur because of metastasis, yet progress in ... slow. , "It,s been particularly challenging to design ... research fellow in systems biology at Harvard Medical ... until after they,ve already metastasized." , Gujral and ... should help researchers better understand how metastasis begins. ...
Breaking Biology News(10 mins):Americans May Be Ready for a Brave New World of Healthcare 2Americans May Be Ready for a Brave New World of Healthcare 3Americans May Be Ready for a Brave New World of Healthcare 4Migration negation 2Migration negation 3
... has been shown to improve the neurological function ... University of Traditional Chinese Medicine, China showed that ... cells positive for 5-bromodeoxyuridine, a cell proliferation-related marker, ... growth-associated protein 43, a marker of synaptic plasticity ...
... potential is the direct current potential difference between the ... Its initial amplitude is a significant indicator of the ... well as injury current, can be modulated by direct ... electrical field are hard to define. Dr. Guanghao Zhang ...
... 6, 2013 /PRNewswire-iReach/ -- IdentiSys Inc., North America,s ... card issuance, emergency response, and access control security systems, ... world,s leader in Customer and Patient Experience Management systems. ... from Qmatic to the marketplace and will be the ...
Cached Biology News:IdentiSys brings Qmatic Q-Guide Queuing Systems to the North American market 2IdentiSys brings Qmatic Q-Guide Queuing Systems to the North American market 3
(Date:11/21/2014)... Texas (PRWEB) November 21, 2014 ... is a professional and in-depth research report on ... including its definition, classification, application, and industry chain ... covers the international market analysis, including China’s domestic ... macroeconomic environment & economic situation analysis. The report ...
(Date:11/21/2014)... , Nov. 20, 2014 /CNW/ - Aequus Pharmaceuticals ... announce that it has closed a brokered private ... for approximately C$3.7 million.  Cormark Securities Inc. and ... the Brokered Offering for a syndicate of agents ... Financial Corp. (collectively the "Agents"). Concurrently with the ...
(Date:11/21/2014)... , Nov. 20, 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or ... month periods ended September 30, 2014.  Biorem,s complete 2014 third quarter ... ). Financial Summary:Three-months ended September 30, , ... share data) , 2014 , 2013 ... , 5,281 , 6,715 , ...
(Date:11/18/2014)... FL (PRWEB) November 17, 2014 ... point-of-care diagnostic tests – today announces its third ... and Prevention’s (CDC) Get Smart About Antibiotics Week ... Week is a national campaign designed to highlight ... health departments, and non-profit and for-profit partners to ...
Breaking Biology Technology:International Transformer Industry - Analysis on Applications, Development & Forecasts Now Available at ReportsnReports.com 2International Transformer Industry - Analysis on Applications, Development & Forecasts Now Available at ReportsnReports.com 3Aequus Pharmaceuticals closes $4.2 million private placement financing 2Aequus Pharmaceuticals closes $4.2 million private placement financing 3Biorem Reports Third Quarter Results 2Biorem Reports Third Quarter Results 3RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 2RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 3
... July 24 Abaxis, Inc.,(Nasdaq: ABAX ), a medical ... for the first,fiscal quarter ended June 30, 2008., ... 7% over last year,s comparable quarter. -- Total sales ... units or 19% over last year,s ...
... hospital physicians, pulmonary and critical care clinicians, ... about overuse of antibiotics, DURHAM, N.C., July ... conferences of the American Thoracic Society and,Society of ... care physicians, and researchers are unanimous in their ...
... 24 Glasses embedded with a telescope,promise to ... to drive and do,other activities requiring sharper distance ... of these innovative glasses,over earlier devices in an ... Biomedical Optics, mailed to subscribers in print form ...
Cached Biology Technology:Abaxis Reports Financial Performance for the First Quarter of Fiscal 2009 2Abaxis Reports Financial Performance for the First Quarter of Fiscal 2009 3Abaxis Reports Financial Performance for the First Quarter of Fiscal 2009 4Abaxis Reports Financial Performance for the First Quarter of Fiscal 2009 5Abaxis Reports Financial Performance for the First Quarter of Fiscal 2009 6Abaxis Reports Financial Performance for the First Quarter of Fiscal 2009 7Abaxis Reports Financial Performance for the First Quarter of Fiscal 2009 8U.S. Clinicians Indicate a Strong Need for New Tools to Combat Sepsis 2U.S. Clinicians Indicate a Strong Need for New Tools to Combat Sepsis 3Telescope Embedded in Spectacle Lens Promises to Make Driving Easier for Visually Impaired 2Telescope Embedded in Spectacle Lens Promises to Make Driving Easier for Visually Impaired 3
Kit containing MACS equipment and reagents for immunopurification of proteins....
... LCMSsolution software offers an intuitive, ... instrument control, diverse data handling, ... requirements. Comprehensive functions include data ... data management in both standalone ...
... a modern flow cytometer, a scientist can ... labeled with fluorescent probes. However, the emission ... cell labeling are broader than the light ... filters. Thus, the fluorescence signal of a ...
... Sigmas FLAG Immunoprecipitation kit allows a ... of an active FLAG-tagged protein. The ... gel, which is a highly specific ... resin. The use of affinity resin ...
Biology Products: