Navigation Links
Mixing nanoparticles to make multifunctional materials
Date:10/20/2013

or the fabrication of new materials with combined, enhanced, or even brand new functions."

Future applications could include quantum dots whose glowing fluorescence can be controlled by an external magnetic field for new kinds of switches or sensors; gold nanoparticles that synergistically enhance the brightness of quantum dots' fluorescent glow; or catalytic nanomaterials that absorb the "poisons" that normally degrade their performance, Gang said.

"Modern nano-synthesis methods provide scientists with diverse types of nanoparticles from a wide range of atomic elements," said Yugang Zhang, first author of the paper. "With our approach, scientists can explore pairings of these particles in a rational way."

Pairing up dissimilar particles presents many challenges the scientists investigated in the work leading to this paper. To understand the fundamental aspects of various newly formed materials they used a wide range of techniques, including x-ray scattering studies at Brookhaven's National Synchrotron Light Source (NSLS) and spectroscopy and electron microcopy at the CFN.

For example, the scientists explored the effect of particle shape. "In principle, differently shaped particles don't want to coexist in one lattice," said Gang. "They either tend to separate into different phases like oil and water refusing to mix or form disordered structures." The scientists discovered that DNA not only helps the particles mix, but it can also improve order for such systems when a thicker DNA shell around the particles is used.

They also investigated how the DNA-pairing mechanism and other intrinsic physical forces, such as magnetic attraction among particles, might compete during the assembly process. For example, magnetic particles tend to clump to form aggregates that can hinder the binding of DNA from another type of particle. "We show that shorter DNA strands are more effective at competing against magnetic attraction," Gang said
'/>"/>

Contact: Karen McNulty Walsh
kmcnulty@bnl.gov
631-344-8350
DOE/Brookhaven National Laboratory
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Researchers use nanoparticles to deliver vaccines to lungs
2. UCLA researchers smartphone microscope can detect a single virus, nanoparticles
3. New nanoparticles make solar cells cheaper to manufacture
4. Gold nanoparticles improve photodetector performance
5. Penn researchers develop protein passport that help nanoparticles get past immune system
6. Widely used nanoparticles enter soybean plants from farm soil
7. Nanoparticles digging the worlds smallest tunnels
8. Lung mucus gel scaffold prevents nanoparticles from getting through
9. New imaging technique homes in on electrocatalysis of nanoparticles
10. New structural information on functionalization of gold nanoparticles
11. Gold nanoparticles could treat prostate cancer with fewer side effects than chemotherapy
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Mixing nanoparticles to make multifunctional materials
(Date:8/27/2014)... Flagship Biosciences LLC, a leading provider of ... and medical device industries, has announced a laboratory and ... has consolidated its histology and tissue analysis operations from ... just north of Denver. The new addresses are: ... Suite 100, Westminster, CO 80021 , Tissue Image Analysis ...
(Date:8/27/2014)... 27, 2014 Riviera Beach, Florida ... the creation of the Sancilio Scientific Advisory Board ... SCI’s philosophy of looking to nature for pharmaceutical ... actions are based on sound scientific data, analyses, ... Board provides a vehicle for SCI to receive ...
(Date:8/27/2014)... NJ (PRWEB) August 27, 2014 WriteResult, ... services – has once again shown superiority when it ... sponsor by completing the ePRO portion of their most ... The Japan-based pharma chose WriteResult’s digital writing platform ... trials – the first to complete drew data from ...
(Date:8/26/2014)... An analysis by Replikins, Ltd. of Pubmed data of ... virus strains has revealed extensive conservation and sharing of ... sharing of specific Replikin gene structures has permitted the ... did for the H5N1 influenza vaccine and the Taura ... to be effective (1,2). This ...
Breaking Biology Technology:Flagship Biosciences Announces Relocation and Expansion 2New Sancilio & Company, Inc. Scientific Board 2New Sancilio & Company, Inc. Scientific Board 3A Perfect Record: WriteResult Maintains a 100% On-Time ePRO Record with Latest Irritable Bowel (IBS) Study Data Lock 2
... Signum Biosciences, Inc. today announced the appointment of Dr. Braham Shroot ... replaces Dr. Gregory Stock who will continue to remain active ... , , ... to Signum an outstanding track record of success in growing value at ...
... to conduct the study at the Norris Comprehensive Cancer Center of ... , , ... - Aeterna Zentaris Inc. (TSX: AEZ; Nasdaq: AEZS ... endocrine therapy, today announced that the National Institutes of Health ("NIH") has ...
... Aug. 4 Forte, LLC, today announced ... probate database and estate recovery application that significantly ... OnDemand provides access to a proprietary database of ... matching algorithms that accurately match deceased accounts to ...
Cached Biology Technology:Signum Biosciences Names Braham Shroot as Chief Executive Officer 2Aeterna Zentaris Announces NIH Grant for a Phase 1/2 Study in Advanced Prostate Cancer with AEZS-108 2Aeterna Zentaris Announces NIH Grant for a Phase 1/2 Study in Advanced Prostate Cancer with AEZS-108 3Aeterna Zentaris Announces NIH Grant for a Phase 1/2 Study in Advanced Prostate Cancer with AEZS-108 4Forte Launches Probate Finder OnDemand™ 2Forte Launches Probate Finder OnDemand™ 3
(Date:8/27/2014)... CHICAGO , Aug. 27, 2014 /PRNewswire-iReach/ -- The ... hosting the 36 th Annual International Conference (EMBC,14), ... and Towers in Chicago, Illinois , ... than 2,500 global leaders, students, and industry professionals in ... Logo - http://photos.prnewswire.com/prnh/20140827/140333 ...
(Date:8/27/2014)... the long-standing belief that a deficiency in serotonin ... central role in depression. In the journal ACS ... ability to make serotonin in their brains (and thus ... show depression-like symptoms. , Donald Kuhn and colleagues ... Wayne State University School of Medicine note that depression ...
(Date:8/27/2014)... the main factors thought to be associated with ... are the age of the patient, mechanism of ... time, repair method, operation technique, and repair materials. ... repair of peripheral nerve injuries, there is no ... prognosis, and the dose-effect relationship of the predictors ...
Breaking Biology News(10 mins):Global Leaders In Science, Medicine, And Engineering Gather For The 36th Annual International Conference Of The IEEE Engineering In Medicine And Biology Society, August 26-30 In Chicago 2Global Leaders In Science, Medicine, And Engineering Gather For The 36th Annual International Conference Of The IEEE Engineering In Medicine And Biology Society, August 26-30 In Chicago 3New study throws into question long-held belief about depression 2
... are urgently needed in resource-limited countries. A ... Microbiology colloquium, "Bringing the Lab to the Patient: ... the challenges inherent in bringing new medical devices ... where they are needed most. Point-of-care diagnostics (POCTs) ...
... helped open a new door of possibility in the high-stakes ... an international team, the scientists including Stanford Woods Institute ... found a way to create future ocean conditions in a ... the device can mimic the composition of the future ocean ...
... world dolomite is quite common. More than 90 percent of ... first described scientifically in the 18th century. But who would ... not fully understood, although geologists are aware of large deposits ... years. The process of recent primary dolomite formation is restricted ...
Cached Biology News:Report addresses challenges in implementing new diagnostic tests where they are needed most 2Stanford researchers help predict the oceans of the future with a mini-lab 2How does dolomite form? 2
... The ImageXpressULTRA imaging system ... true point-scanning confocal system for automated ... high throughput cell-based screening. ImageXpressULTRA ... software solution for screening acquisition, image ...
... Assay is an anchorage-independent growth assay in ... stringent assay for detecting malignant transformation of ... with carcinogens or carcinogen inhibitors) are cultured ... for 21-28 days. Following this incubation ...
... The BD CARV II Confocal Imager ... an easy to use and cost effective ... microscope. High speed multi-point confocal scanning, combined ... photobleaching and allows real-time imaging and recording ...
... Gels easier and more efficient by providing ... types of pre-cut pre-assembled membrane/filter paper sandwiches ... cm E-PAGE Gels*. The available nitrocellulose and ... transfer of proteins (Figure 1 Table 1). ...
Biology Products: