Navigation Links
Shaping the future of nanocrystals
Date:8/22/2014

Zheng is the corresponding author of a paper in Science titled "Facet Development During Platinum Nanocube Growth." Hong-Gang Liao is the lead author. Co-authors are Danylo Zherebetskyy, Huolin Xin, Cory Czarnik, Peter Ercius, Hans Elmlund, Ming Pan and Lin-Wang Wang.

The performance of nanocrystals in such surface-enhanced applications as catalysis, sensing and photo-optics is strongly influenced by shape. While significant advances have been made in the synthesis of nanocrystals featuring a variety of shapes - cube, octahedron, tetrahedron, decahedron, icosahedron, etc., - controlling these shapes is often difficult and unpredictable.

"A major roadblock has been that the atomic pathways of facet development in nanocrystals are mostly unknown due to the lack of direct observation," Zheng says. "It has been assumed that commonly used surfactants modify the energy of specific facets through preferential adsorption, thereby influencing the relative growth rate of different facets and the shape of the final nanocrystal. However, this assumption was based on post-reaction characterizations that did not account for how facet dynamics evolve during crystal growth."

As a crystal undergoes growth, its constituent atoms or molecules fan out along specific directional planes whose coordinates are denoted by a three-digit system called the Miller Index. Facets form when the surfaces along different planes grow at different rates. Three of the most critical facets for determining a crystal's geometric shape are the so-called "low index facets," which are designated under the Miller Index as {100}, {110} and {111}.

Working with platinum, one of the most effective industrial catalysts in use today, Zheng and her collaborators initiated the growth of nanocubes in a thin layer of liquid sandwiched between two silicon nitride membranes. This microfabricated liquid cell can encapsulate and maintain the liquid inside the high vacuum of
'/>"/>

Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3 4

Related biology technology :

1. Creative Entrepreneur is Shaping Affordable Health Care Alternatives
2. New 3-D transistors promising future chips, lighter laptops
3. Arteriocyte Takes the Lead in Promoting Building Future Pipeline of Women in STEM Career Fields
4. Discovery of a dark state could mean a brighter future for solar energy
5. Palm Beach Residents to Learn How the Future of Regenerative Medicine Will Combat Aging
6. The future of aerospace takes off in Montreal
7. Quantum dots brighten the future of lighting
8. CAS Names 2012 SciFinder® Future Leaders in Chemistry Program Participants
9. Tom Karagiannis, Ph.D. Awarded Future Fellowship by Australian Research Council (ARC)
10. Future memory
11. Epigenomics, Present and Future Applications for Pharmaceuticals and Diagnostics: Twease.org
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Shaping the future of nanocrystals
(Date:10/25/2014)...  RegeneRx Biopharmaceuticals, Inc. (OTCBB: RGRX) ("the Company" or ... International Symposium on Thymosins in Health and Disease in ... "When thymosin beta 4 (TB4) linked with rhodamine (a ... in a rodent model of stroke, it was visualized ... (the functional tissue of the brain).   The leakage of ...
(Date:10/22/2014)... 2014 New test innovations will be the ... (IVD) test industry, especially as companies struggle with reimbursement ... more than 25 testing innovations in important disease areas ... IVD products. Kalorama details the new approaches its biennial survey ... In Vitro Diagnostic Tests , 9th Edition . ...
(Date:10/22/2014)... The North American crystal oscillator market report ... analysis and forecast of revenue. This market was valued ... reach $623.6 million by 2018, at a CAGR of ... TOC of the North American crystal oscillator market report, ... This also provides a glimpse of the segmentation of ...
(Date:10/22/2014)... (PRWEB) October 22, 2014 Currently ... Sartorius, A & D Weighing, Rice Lake, and ... Semi-Micro Balance . The Sartorius CPA Semi-Micro Balance ... affordable high-quality, precise, and user-friendly laboratory balance. , ... laboratory equipment, their laboratory balances are well known ...
Breaking Biology Technology:Researchers Report Thymosin Beta 4 Crosses Blood-Brain Barrier In Animal Stroke Model 2Report: Radical New IVD Test Approaches Key To Growth 2Report: Radical New IVD Test Approaches Key To Growth 3The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 2The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 3The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 4Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 2Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 3
... JERUSALEM, June 3 The Gamida Cell-Teva ... three in Barcelona and two in Valencia, have joined the Excel ... alphabetical order:, - Hospital Clinic of Barcelona, Barcelona, ... - Hospital Clinico Universitario de Valencia, Valencia, ...
... Imaging(R), Inc., a wholly owned subsidiary of Pro Medicus ... Advanced Radiology Consultants to provide its enterprise-wide Visage(R) CS. ... Advanced Radiology Consultants is a multi-modality, multi-site imaging organization ... year. , , Dr. Gerard Muro, Chief of ...
... a wholly owned subsidiary of Microfluidics International Corporation ... entered into an exclusive distributorship agreement whereby POWREX ... fluid processors in the pharmaceutical, biotechnology and energy ... the second-largest individual country pharmaceutical market in the ...
Cached Biology Technology:Five Cord Blood Transplant Centers in Catalonia and Valencia Join a Study to Test a New Technique to Treat Leukemia and Lymphoma 2Five Cord Blood Transplant Centers in Catalonia and Valencia Join a Study to Test a New Technique to Treat Leukemia and Lymphoma 3Visage Imaging to Provide Visage(R) CS Enterprise Wide Advanced Visualization Solutions to Advanced Radiology Consultants 2Microfluidics Expands Distributorship in Japan with Exclusive POWREX Partnership to Meet Increased Demand in Pharmaceutical, Biotechnology and Energy Industries 2Microfluidics Expands Distributorship in Japan with Exclusive POWREX Partnership to Meet Increased Demand in Pharmaceutical, Biotechnology and Energy Industries 3Microfluidics Expands Distributorship in Japan with Exclusive POWREX Partnership to Meet Increased Demand in Pharmaceutical, Biotechnology and Energy Industries 4
(Date:10/17/2014)... This news release is available in German . ... need millions of sperms every day in order to reproduce? ... questions are the topic of the latest issue of the ... 16th, 2014). The evolutionary biologist Steven Ramm from Bielefeld University ... nature, it is not unusual for a female to copulate ...
(Date:10/16/2014)... new synthesis of recent research findings to inform their ... two states. , The Ecology and Management of ... Synthesis of the Relevant Biophysical Science and Implications for ... the U.S. Forest Service,s Pacific Northwest Research Station, is ... a synthesis of the large body of scientific information ...
(Date:10/16/2014)... October 16, 2014 NXT-ID, Inc. (NASDAQ: ... a biometric authentication company focused on the growing mobile ... technologies including Wocket™, the Smart Wallet, at the 13 ... is a leading global conference on the intersection of ... Mark Anderson , founder and publisher of the ...
Breaking Biology News(10 mins):Sperm wars 2New report synthesizes best available science on management of moist mixed-conifer forests 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3
... Using a diverse herbicide application strategy may increase production ... practice will drastically reduce weeds and seeds that are ... glyphosate-resistant crops has led to weeds, such as marestail, ... in Roundup. Bill Johnson, a Purdue associate professor of ...
... University of Alberta now has a permanent connection to the agricultural ... A newly discovered fungus that helps plants grow in dry soil ... its help with the research. The fungus, now known as ... additional moisture and nutrients to the roots of nearby plants. Researchers ...
... Most of us are aware of the potential health benefits ... Now researchers are looking at how omega-3 may help laying ... million has been awarded to Dr John Tarlton of the ... of Clinical Veterinary Sciences by the Biotechnology and Biological Sciences ...
Cached Biology News:Herbicide diversity needed to keep Roundup effective 2Happier, healthier, more productive hens on omega-3? 2
... Progesterone Receptor (PR) Competitor Assay ... screening novel progesterone receptor binding compounds ... assay utilizes a fusion of glutathione ... of human progesterone receptor [PR-LBD(GST)] and ...
... pTriEx™ vectors combine the proven features of ... systems and provides all of the benefits ... one vector backbone. The pTriEx vectors have ... target genes in all three expression systems. ...
Rabbit polyclonal to Shigella Immunogen: Mixture of S. boydii, S. flexneri & S. dysenteriae....
... Cell Identification Kit. ALDEFLUORs ... substrate for the enzyme ... is highly expressed in ... making ALDH an extremely ...
Biology Products: