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:10/20/2014)... 20, 2014 Asterias Biotherapeutics, Inc. (NYSE ... signed a Notice of Grant Award (NGA) with ... October 1, 2014.  The NGA provides for the ... release of additional grant funds pursuant to the ... clinical development of Asterias, product, AST-OPC1. The grant ...
(Date:10/20/2014)... OncLive® is pleased ... at Thomas Jefferson University has joined its Strategic ... Alliance Partnership program, the Sidney Kimmel Cancer Center ... awareness of the Center’s cutting-edge research programs, comprehensive ... and other health care professionals from the Sidney ...
(Date:10/19/2014)... , Oct. 19, 2014 NextCODE Health, which enables ... genome in real time, today announced the launch of its ... Exchange , at the American Society of Human Genetics (ASHG) ... learn more, sign up and apply for free beta access, ... features and benefits can be viewed here . ...
(Date:10/19/2014)... 19, 2014 The Asian Orthopedic braces and ... Asia with analysis and forecast of revenue. The Orthopedic braces ... to around $416.5 million by 2018, at a developing CAGR ... TOC of the Asian Orthopedic braces and support systems market, ... also provides a glimpse of the segmentation of orthopedic braces ...
Breaking Biology Technology:Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 2Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 3The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 2The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 2The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 4
... in Revenue and Positive ... EBITDA for Three Consecutive Quarters, PRINCETON, N.J., April 1 ... production company, today,announced record growth in revenues for 2007. The ... and generated positive EBITDA for,the third consecutive quarter. Laureate achieved ...
... FREMONT, Calif., April 1, 2008 WaferGen,Biosystems, ... developer of,state-of-the-art gene expression, genotyping, cell biology ... signing of an exclusive distribution,agreement for the ... in Germany. The distributor agreement covers WaferGen,s,entire ...
... 2008 Plethora Solutions Holdings PLC,("Plethora", AIM: PLE), ... management of urological disorders, today announced that it,has ... Paul Capital,Healthcare. Through this agreement, Plethora will receive ... payable upon signature and a further $10 million,upon ...
Cached Biology Technology:Laureate Pharma Reports Record Growth for 2007 2Laureate Pharma Reports Record Growth for 2007 3WaferGen Signs Exclusive Distribution Agreement for SmartSlide(TM) Micro-Incubation System in Germany 2WaferGen Signs Exclusive Distribution Agreement for SmartSlide(TM) Micro-Incubation System in Germany 3WaferGen Signs Exclusive Distribution Agreement for SmartSlide(TM) Micro-Incubation System in Germany 4WaferGen Signs Exclusive Distribution Agreement for SmartSlide(TM) Micro-Incubation System in Germany 5Plethora and Paul Capital Healthcare sign a $25 million revenue interest financing agreement with an option for an additional $3 million equity investment 2Plethora and Paul Capital Healthcare sign a $25 million revenue interest financing agreement with an option for an additional $3 million equity investment 3Plethora and Paul Capital Healthcare sign a $25 million revenue interest financing agreement with an option for an additional $3 million equity investment 4
(Date:10/18/2014)... a sample of patients with undiagnosed, suspected genetic conditions, ... with a higher molecular diagnostic yield than traditional molecular ... JAMA . The study is being released to coincide ... , Exome sequencing, which sequences the protein­coding region of ... material present in a cell or organism), has been ...
(Date:10/17/2014)... in German . ... day in order to reproduce? And why are there two ... the latest issue of the research journal Molecular Human ... Steven Ramm from Bielefeld University Bielefeld has compiled this special ... for a female to copulate with several males in quick ...
(Date:10/17/2014)... German . ... When treating overdoses, doctors are often limited to supportive therapy ... is a combination of drugs involved. So what can be ... grandmother,s pills? ETH professor Jean-Christophe Leroux from the Institute of ... to this question. "The task was to develop an agent ...
Breaking Biology News(10 mins):Study examines type of exome sequencing and molecular diagnostic yield 2Study examines type of exome sequencing and molecular diagnostic yield 3Sperm wars 2Emergency aid for overdoses 2Emergency aid for overdoses 3
... - Animals that choose to eat in the presence of a ... go into a defensive mode and pay a physical penalty for ... crop pest hornworm caterpillar, a study shows. While other animals ... hornworm caterpillars slow or stop eating but actually keep up their ...
... to participate in ELIXIR ( www.elixir-europe.org ), a major ... in Europe. With one of Europe,s larger economies now ... is well placed to continue its excellent progress. ... infrastructure for managing biological data to support research and ...
... the IRCM, led by geneticist Dr. Jacques Drouin, recently ... inflammation. This important breakthrough will be published in tomorrow,s ... . IRCM scientists study glucocorticoids, a class ... reduce inflammation. They are used in medicine to treat ...
Cached Biology News:Caterpillar gets more from its food when predator is on the prowl 2Italy pledges to be part of ELIXIR research infrastructure 2Controlling inflammatory and immune responses 2
Glycerokinase; from Bacillus stearothermophilus...
... The inductive drives of VARIOMAG Magnetic ... as motors, belts, or mechanical bearings, making ... In addition, the VARIOMAG inductive drive can ... water, dust or microorganisms. This is why ...
...
... FL is equipped with ... measurement technologies that complement ... advanced features of Fluoroskan ... Fluoroskan Ascent FL provides ...
Biology Products: