Navigation Links
Bio-enabled, surface-mediated approach produces nanoparticle composites
Date:8/19/2009

es very precise control over nanoparticle sizes," said Eugenia Kharlampieva, a postdoctoral researcher in Tsukruk's laboratory. "We produce well-defined materials without the problem of precipitation, aggregation or formation of large crystals. Since the silk fibroin is mono-dispersed, we can create uniform domains within the template."

Fabrication of the nanocomposites begins by dissolving silk cocoons and making the resulting fibroin water soluble. The silk is then placed onto a silicon substrate using a spin-coating technique that produces multiple layers of thin film that is then patterned into a template using a nanolithography technique.

"Because silk is a protein, we can control the properties of the surface and design different kinds of surfaces," explained Kharlampieva. "This surface-mediated approach is flexible at producing different shapes. We can apply the method to coat any surface we want, including objects of complex shapes."

Next, the silk template is covered with a solution containing ions of gold, silver, or other metal. Over a period of time ranging from hours to days, the nanoparticles form within the template. The relatively long growth time, which operates at room temperature and neutral pH in a water-based environment, allows precise control of the particle size and spacing, Tsukruk noted.

"We operate at conditions that are suitable for biological activities," he said. "No reducing agents are required to produce the particles because the biomolecules serve as reducing agents. We don't add any chemicals that could be toxic to the protein."

Use of these mild processing conditions reduces the cost producing the composites and their potential environmental impact. When dried, the resulting silk-nanoparticle film has high tensile strength, high elasticity and toughness.

"Silk is almost as strong as Kevlar, but it can be deformed by 30 percent without breaking," said Tsukruk. "The
'/>"/>

Contact: John Toon
jtoon@gatech.edu
404-894-6986
Georgia Institute of Technology Research News
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. New Pharmacogenomic Approach: 454 Life Sciences and Perlegen to Collaborate in Drug Response Sequencing Study
2. Novel Alternative Approach to Inhibiting Insulin Growth Factor (IGF) May Provide New Treatment for Breast Cancer and Other Cancers
3. Monsanto and Devgen Describe New Approach to Insect-Protection
4. Fate Therapeutics Created by Leading Stem Cell Scientists to Pursue New Approaches to Stem Cell Therapies
5. New approach may render disease-causing staph harmless
6. Copolymers block out new approaches to microelectronics at NIST
7. Silence Therapeutics and AstraZeneca Announce Collaboration to Develop Novel Approaches for siRNA Drug Delivery
8. Quiznos Selects Halogen for Fresh Approach to Talent Management
9. Countering an approaching water crisis
10. Novel Approach to Treat Alzheimers and Other Diseases Offered by Targeting Cell Membrane RAFTS
11. Abbott Scientists Present a New Approach for Treating Attention-Deficit Hyperactivity Disorder
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Bio-enabled, surface-mediated approach produces nanoparticle composites
(Date:7/1/2015)... AURORA, Colo. and BANGALORE, India ... a global genomic profiling company that uses next generation ... appointment of Scott A. Storrer as chief ... and CEO, he will be responsible for all strategy, ... Vijay Chandru , who has served as Strand,s chairman ...
(Date:7/1/2015)... 1, 2015 InferMed , ... will ... evidence-based clinical s olutions suite   ... information products and services, announced today the acquisition of  InferMed ... (CDS) technology company. InferMed,s Arezzo technology supports clinicians ...
(Date:6/30/2015)... ... June 30, 2015 , ... Students and faculty ... the first half of “Integrative Biotechnology,” an applied biotechnology course team-taught by faculty ... this course combines students from both universities and is taught on both continents. ...
(Date:6/30/2015)... , June 30, 2015  Today, Americord Registry, one of ... Andrew Horne , a partner at Kirkland & Ellis ... Logo - http://photos.prnewswire.com/prnh/20150630/226958LOGO   "We ... Advisory Board," says Martin Smithmyer , CEO of Americord. ... legal career that will assist Americord,s growth and vision." ...
Breaking Biology Technology:Strand Life Sciences Names Scott A. Storrer CEO as Company Continues Global Expansion with Focus on Precision Medicine Product 2Strand Life Sciences Names Scott A. Storrer CEO as Company Continues Global Expansion with Focus on Precision Medicine Product 3Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 2Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 3Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 4Rivier University and Beijing City University Academic and Cultural Exchanges Begin 2Americord Registry Announces Andrew Horne as Advisory Board Member 2
... thin films of silk as templates, researchers have ... to form strong and flexible composite structures that ... bio-enabled, surface-mediated formation approach mimics the growth and ... the ability of biomolecules to chemically reduce metal ...
... Md., Aug. 19 Martek Biosciences Corporation (Nasdaq: MATK ) ... of fiscal 2009 on September 2, 2009, at approximately 4:00 p.m. Eastern ... conduct a conference call to discuss these results with investors. All ... Martek,s web site at http://investors.martek.c o m ...
... OSLO, August 19 , ... to Halt Tumour Growth at Low Doses , ... PCI Biotech,s light-activated delivery system, a new study shows. , ... employed to increase,the effect and lower the side effects of anti-cancer ...
Cached Biology Technology:Bio-enabled, surface-mediated approach produces nanoparticle composites 2Bio-enabled, surface-mediated approach produces nanoparticle composites 3Anti-Tumour Drug More Potent With Light-Directed Delivery 2
(Date:6/16/2015)... Sweden , June 16, 2015 ... all touch fingerprint sensors in the company,s portfolio from one ... Deliveries are planned to mainly take place during the third ... in Asia . Jörgen Lantto, ... evidence of    the   growing interest from smartphone OEMs ...
(Date:6/15/2015)... , Jun. 15, 2015 NXT-ID, Inc. (NASDAQ: ... focused on the growing mobile commerce market, announces that its ... showcased to media at Digital Experience! @ NYC June 18th. ... showcase of the latest innovation in technology to over 300 ... be held at the Metropolitan Pavilion in New ...
(Date:6/9/2015)... --  MedNet Solutions , an innovative SaaS-based eClinical technology ... will be providing demonstrations of its iMedNet ... Information Association (DIA) Annual Meeting in Washington ... include previews of many exciting new enhancements that will ... 2015 Feature 1 Release. MedNet ...
Breaking Biology News(10 mins):FPC Receives Order for Touch Fingerprint Sensors of 375 MSEK 2Wocket Smart Wallet Exhibiting at Pepcom Digital Experience! @ NYC June 18th 2Wocket Smart Wallet Exhibiting at Pepcom Digital Experience! @ NYC June 18th 3MedNet To Provide Sneak Peeks Of Its iMedNet "2015 Feature 1 Release" At The DIA Annual Meeting 2MedNet To Provide Sneak Peeks Of Its iMedNet "2015 Feature 1 Release" At The DIA Annual Meeting 3
... Haleakalā silversword plant made a strong recovery from early 20th-century ... decline. New research published this week warns that global warming ... habitat. Known for its striking rosette, the silversword grows ... end of its life, at which time it produces a ...
... Texas Researchers at The University of Texas at Austin have ... that may improve the efficacy of vaccines for diseases such as ... E. coli , which were described in a paper published this ... new class of biological "adjuvants" that is poised to transform vaccine ...
... the likelihood that people take on managerial responsibilities, according ... The study, published online in Leadership Quarterly , ... associated with the tendency for individuals to occupy a ... research team, which included academics from Harvard, NYU, and ...
Cached Biology News:Global warming may have severe consequences for rare Haleakalā silverswords 2Designer bacteria may lead to better vaccines 2Designer bacteria may lead to better vaccines 3Born to lead? Leadership can be an inherited trait, study finds 2
... H 10 O 2 S 2 ... Form: White crystalline powder Assay: greater ... By IR Melting Point: greater than ... less than or equal to 1% ...
... of an anodized aluminum body in a ... embedded in polymerized matrix. It is designed ... Synergy Multi-Detection Readers. This multi-functional test plate ... the need for tedious wet testing. Works ...
... provides excellent performance with isocratic IC ... and column heater all standard, this ... and stability. The vacuum degas option ... work. Operate in manual or automated ...
Anti-WT-1 Liquid. In 10 μM PBS, 0.2 % BSA, pH 7.6. Recognizes the ~47-55 kDa Wilm's tumor protein in Wilm's tumor tissue. ...
Biology Products: