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

a transmission electron microscope (TEM) for an extended period of time, enabling in situ observations of single nanoparticle growth trajectories.

"With the liquid cells, we're able to use TEMs to observe the growth of nanocrystals that remarkably resemble nanocrystals synthesized in flasks," Zheng says. "We found that the growth rates of all low index facets are similar until the {100} facets stop growing. The {110} facets will continue to grow until they reach two neighboring {100} facets, at which point they form the edge of a cube whose corners will be filled in by the continued growth of {111} facets. The arrested growth of the {100} facets that triggers this process is determined by ligand mobility on the {100} facets, which is much lower than on the {110} and {111} facets."

For their observations, Zeng and her collaborators were able to use several of the TEMs at Berkeley Lab's National Center for Electron Microscopy (NCEM), a DOE Office of Science user facility, including the TEAM 0.5 instrument, the world's most powerful TEM. In addition, they were able to use a K2-IS camera from Gatan, Inc., which can capture electron images directly onto a CMOS sensor at 400 frames per second (fps) with 2K-by-2K pixel resolution.

"The K2-IS camera can also be configured to capture images at up to 1600 fps with appropriate scaling of the field of view, which is critical for observing particles that are moving dynamically in the field of view," says lead author Liao, a member of Zheng's research group. "The elimination of the traditional scintillation process during image detection results in significant improvement in both sensitivity and resolution. High resolution imaging is also facilitated by the thin silicon nitride membranes of our liquid cell window, which is about 10 nanometers thick per membrane."

The lower ligand mobility and arrested growth of selected facets experimentally observed by Zheng and Liao, were supported by ab
'/>"/>

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)... , Oct. 20, 2014 PureTech , ... tackling big healthcare problems, announced today the closing ... with participation from Invesco Perpetual, a $120 Billion ... to drive PureTech,s existing pipeline forward and to ... has the scientific creativity to really go for ...
(Date:10/20/2014)... 20, 2014 Local veterinary surgeon, Dr. ... investigational study of donor stem cells for dogs with ... therapy and has performed clinical stem cell therapy for ... to determine if a single injection of donor stem ... help reduce pain and inflammation in the treated joints. ...
(Date:10/19/2014)... Oct. 19, 2014 NextCODE Health, which enables clinicians ... in real time, today announced the launch of its new ... , at the American Society of Human Genetics (ASHG) annual ... more, sign up and apply for free beta access, visit ... and benefits can be viewed here . ...
(Date:10/19/2014)... The Asia-Pacific Speech Analytics market report defines and ... and forecast of revenue. This market is estimated to ... by 2019, at a Compound Annual Growth Rate (CAGR) ... the TOC of the Asia-Pacific Speech Analytics market report ... It also provides a glimpse of the segmentation in ...
Breaking Biology Technology:PureTech Announces Expansion with Oversubscribed $55M Funding Round 2PureTech Announces Expansion with Oversubscribed $55M Funding Round 3PureTech Announces Expansion with Oversubscribed $55M Funding Round 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 5PureTech Announces Expansion with Oversubscribed $55M Funding Round 6Cascade Veterinary Referral Center Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2The 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 Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 2The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 4
... Brookfield, Wis. - Hammes Co., ... estate consulting firm, has selected SiteStuff ... based in Austin, Texas, will assist in ... well as offer its Bid Management Platform ...
... As many as 1,000 people are expected to gather ... ways to protect the nation's food supply. , ,The ... public and private sector representatives from regional states and ... Wisconsin Procurement Institute, is helping to plan the event. ...
... Whitewater, Wis. - The University of Wisconsin-Whitewater has ... what is now known as the Information Technology Infrastructure ... Computer End-User Technologies program, is a product of joint ... will begin this fall semester. It places a far ...
Cached Biology Technology:Milwaukee to host inaugural Great Lakes Agro-Security Symposium 2Milwaukee to host inaugural Great Lakes Agro-Security Symposium 3Whitewater upgrades tech degree program 2Whitewater upgrades tech degree program 3
(Date:10/15/2014)... The Ebola virus is spreading rapidly and to an ... experienced in the past and the virus shows a ... been recorded before. For this reason, the German National ... of Science and Engineering, and the Union of the ... statement on the Ebola epidemic today. , In the ...
(Date:10/14/2014)... DURHAM, N.C. – Like discriminating thieves, prostate cancer tumors ... in the body. But such avarice may be a ... found a way to kill prostate cancer cells by ... that selectively destroys the diseased cells brimming with the ... which uses two drugs already commercially available for other ...
(Date:10/14/2014)... Sinai-led research team has discovered a new kind of stem ... cell that lines liver blood vessels, according to a study ... The existence of such a cell type contradicts current theory ... and may hold clues to origins of, and future treatment ... a single cell into a complex being made up of ...
Breaking Biology News(10 mins):Academies call for consequences from the Ebola virus epidemic 2Academies call for consequences from the Ebola virus epidemic 3Academies call for consequences from the Ebola virus epidemic 4Academies call for consequences from the Ebola virus epidemic 5Prostate cancer's penchant for copper may be a fatal flaw 2Stem cell discovery challenges dogma on how fetus develops; holds insights for liver cancer and reg 2Stem cell discovery challenges dogma on how fetus develops; holds insights for liver cancer and reg 3
... of eight hospitals in Peru has shown that opening ... of mechanically ventilated negative-pressure rooms and 18 times that ... The researchers, led by Rod Escombe from Imperial College ... rooms such as respiratory isolation rooms, TB wards, respiratory ...
... study led by scientists from the University of North ... mechanism involved in the development of schizophrenia. , ... had been diagnosed with schizophrenia, the researchers found that ... among schizophrenia patients than in persons who were free ...
... NIH Neuroscience Microarray Consortium today announced that it ... and Illumina platforms to its list of services. ... that "adding ultra-high throughput genotyping for its user-base ... Consortium current with the demands of the scientific ...
Cached Biology News:Brain tissue reveals possible genetic trigger for schizophrenia 2NIH neuroscience microarray consortium launches high-throughput genotyping services 2
... reagent for Virus isolation ... unique water insoluble Elastomeric ... and chaotropes; Engineered to ... viruses while preserving infectivity; ...
Handles samples from from 75l to 150l...
PKA Sampler Kit 10 mu g each...
Chaperone Sampler Kit 10 mu g each...
Biology Products: