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:3/31/2015)... Materials in Society Lecture Series at   ...   Elsevier , a world-leading provider of ... home of Materials Today , announced that its ... in Society  Lecture Series . The inaugural lectures ... Conference on Materials for Advanced Technologies (ICMAT) to be ...
(Date:3/31/2015)... LAKE CITY , March 31, 2015  The ... milestone with the selection of ten proposals that ... MCRI is the first patient-led, scientifically validated funding ... Stage 2 of the MCRI included ... careful review of a large number of innovative ...
(Date:3/31/2015)... (PRWEB) March 31, 2015 Diasome Pharmaceuticals, ... licensor, SDG, Inc., that a United States patent has ... insulin therapy. , Entitled “Lipid Construct for ... composition of matter claims related to the use of ... for enabling injected insulin to more effectively reach the ...
(Date:3/30/2015)... , March 30, 2015  Heidrick & Struggles (Nasdaq: ... leadership consulting and culture shaping worldwide, ... firm to lead its global Healthcare and Life Sciences practice. ... Life Sciences, Mitchell will lead a team of more than ... Europe and Asia serving ...
Breaking Biology Technology:Elsevier Materials Science Council Introduces the Materials in Society Lecture Series at the International Conference on Materials for Advanced Technologies (ICMAT) 2Elsevier Materials Science Council Introduces the Materials in Society Lecture Series at the International Conference on Materials for Advanced Technologies (ICMAT) 3Myeloma Crowd Research Initiative Selects 10 High-Risk Multiple Myeloma Proposals For Further Review 2Diasome Pharmaceuticals, Inc. Announces Notice of Allowance from US PTO for Liver Targeting System for Insulin 2Heidrick & Struggles Strengthens Leadership of Healthcare - Life Sciences Practice 2
... May 17 /PRNewswire-FirstCall/ - Aeterna Zentaris Inc. ( ... company specialized in oncology and endocrinology, today announced that ... product designation from the Committee for Orphan Medicinal Products ... AEZS-108 for the treatment of ovarian cancer. AEZS-108, the ...
... , May 17 Soligenix, Inc. (OTC Bulletin Board: SNGX) ... results for the first quarter of 2010. , ... Soligenix,s revenues for the first quarter of 2010 ... the first quarter of 2009. The decreased revenues were primarily a result ...
... Sigma- Aldrich announces the retirement of David Julien , President – ... on his current role in January 2009 .  He served as President ... to January 2009 and before that in a number of senior ... , , , ...
Cached Biology Technology:Aeterna Zentaris Receives Positive Opinion for Orphan Medicinal Product Designation for AEZS-108 for the Treatment of Ovarian Cancer from the Committee for Orphan Medicinal Products of the European Medicines Agency 2Aeterna Zentaris Receives Positive Opinion for Orphan Medicinal Product Designation for AEZS-108 for the Treatment of Ovarian Cancer from the Committee for Orphan Medicinal Products of the European Medicines Agency 3Soligenix Reports First Quarter 2010 Financial Results and Reviews Accomplishments 2Soligenix Reports First Quarter 2010 Financial Results and Reviews Accomplishments 3Soligenix Reports First Quarter 2010 Financial Results and Reviews Accomplishments 4Soligenix Reports First Quarter 2010 Financial Results and Reviews Accomplishments 5Sigma-Aldrich (Nasdaq: SIAL) Announces Executive Management Changes: Retirement of David Julien and Promotion of Joseph Porwoll 2
(Date:3/16/2015)... 16, 2015 Between 16 ... present groundbreaking innovations in biometric identification at the ... .      (Photo: http://photos.prnewswire.com/prnh/20150316/735333 ... is well at the forefront: the company,s all ... in Germany . BiometricGate is ...
(Date:3/12/2015)... 2015 Beta Systems today ... access management (IAM) solution for a fixed price ... System,s new IAM package, customers benefit from the ... multiple IAM implementations across different industries. The new ... as any necessary services and consulting. It spans ...
(Date:3/11/2015)... 11, 2015   The Sync Project™ ... scientifically measure and harness music to improve health. ... and objective measurements of physiology, enabling the study ... in large populations. It is designed for medical ... perform rigorous studies and accelerate the discovery of ...
Breaking Biology News(10 mins):DERMALOG Presents its Latest Biometric Innovations at the Hannover CeBIT Exhibition, 16 - 20 March 2015 2DERMALOG Presents its Latest Biometric Innovations at the Hannover CeBIT Exhibition, 16 - 20 March 2015 3Beta Systems Fast Forward IAM Available Now: a Standardized IAM Package at a Fixed Price 2Introducing The Sync Project, a Global Collaboration Harnessing the Scientific Potential of Music for Health 2Introducing The Sync Project, a Global Collaboration Harnessing the Scientific Potential of Music for Health 3
... ITHACA, NY Commercial apple growers in the northeastern ... and insect invasions to tree nutrition and crop load. ... of integrated fruit production (IFP) and organic fruit production ... alternative markets. In a recent issue of HortScience ...
... Today,s most common cultivated strawberry, the familiar Fragaria x vananassa ... a chance hybridization of two wild strawberry species in Europe ... characteristics of both species, including the larger, firmer fruit of ... fruit of F. virginiana . The fact that ...
... the most important fruit trees in the world. Citrus has ... than 4,000 years. Until now, however, the exact genetic origins ... ), lemon ( C. limon ), and grapefruit ( C. ... from China has published a study in the Journal of ...
Cached Biology News:Integrated, organic production systems evaluated for 'liberty' apple 2New research expands genetic base of cultivated strawberry 2Genetic origin of cultivated citrus determined 2