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:12/19/2014)... BioPlus Specialty Pharmacy (BioPlus), one of the ... Maroulis, Pharm.D. to the newly created position of Vice ... position, Dr. Maroulis will continue to manage the entire ... multi-site pharmacies as the company expands. Dr. Maroulis has ... he has served in many different capacities in the ...
(Date:12/19/2014)...  Roche (SIX: RO, ROG; OTCQX: RHHBY) announced ... a privately held company based in ... a big data platform for centralized management and ... proprietary on-market Genomic Management Solution, Bina-GMS 1 , ... fast and scalable analyses to maximize the value ...
(Date:12/19/2014)... BURLINGTON, Mass. , Dec. 19, 2014 ... biomaterial market will grow at a 12 percent compound ... a result of the aging population and the increasing ... Latin America will also spur demand ... results of dental implant and periodontal treatments. ...
(Date:12/19/2014)... FL (PRWEB) December 18, 2014 ... the nation’s leading specialty pharmacies, has an expanded ... as clinical pharmacy consultants for prescriber offices in ... expertise. , “We have a variety of ... For example, those specializing in hepatitis C help ...
Breaking Biology Technology:BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2Roche acquires Bina Technologies and enters the genomic informatics market 2Roche acquires Bina Technologies and enters the genomic informatics market 3Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 2Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 3BioPlus Specialty Pharmacy Expands ‘Regional Pharmaceutical Care Liaison’ Team 2BioPlus Specialty Pharmacy Expands ‘Regional Pharmaceutical Care Liaison’ Team 3
... have another chance to strengthen ties with Japan at ... Center. , ,Sponsored by the Japan External Trade ... an inside look into how Wisconsin biotech companies are ... traveled to Japan will talk about the difficulties and ...
... are available 24 hours a day now that a new ... , ,The Web site MusicMadeInMadison.com plays more than ... the Profits, Daedalus Burn, Infinite Helix and They Drive By ... site's goal is to help both the circulation of the ...
... and Human Services Secretary Mike Leavitt announced yesterday that ... will be formed to make recommendations for a nationwide ... , ,This news makes the Digital Healthcare Conference ... 9 at the Fluno Center in Madison, even more ...
Cached Biology Technology:Wisconsin biotechs plan Japan trade mission 2Preview: Electronic health records, tech choices explored at Digital Healthcare Conference 2Preview: Electronic health records, tech choices explored at Digital Healthcare Conference 3
(Date:12/17/2014)... Dec. 16, 2014 Research and Markets ... of the "Global Chemical Sensor Market 2015-2019" ... http://photos.prnewswire.com/prnh/20130307/600769 One major ... demand for medical sensors in biomedical applications. Chemical ... quick and correct diagnosis during surgical procedures. The ...
(Date:12/15/2014)... Dec. 12, 2014 Research and Markets ... of the "Global Facial Recognition Market 2015-2019" ... http://photos.prnewswire.com/prnh/20130307/600769 Facial recognition ... individuals. Facial recognition system measures the overall facial ... edges, mouth, and the distance between eyes. Facial ...
(Date:12/11/2014)... 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has announced the addition of ... report to their offering. One ... adoption of multimodal biometric systems. Multimodal biometric systems ... for verification and identification purposes. This helps to ...
Breaking Biology News(10 mins):Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... are spiritual, according to new research from Rice University. Though ... that spirituality is a separate idea one that more ... The research will be published in the June ... in-depth interviews with 275 natural and social scientists at elite ...
... human fungal infections caused by certain strains of Aspergillus ... treatments at an alarming rate, say scientists. University of ... a new test that can not only better diagnose ... resistance to azoles the class of drugs used to ...
... at Sam Houston State University and the University of Texas ... justice system in Houston to establish protocols to determine when ... , "This is a problem-solving project that seeks to determine ... William Wells, who is leading the research project at Sam ...
Cached Biology News:More than 20 percent of atheist scientists are spiritual 2Drug-resistance fears for deadly fungal disease 2Research to target untested rape kits 2Research to target untested rape kits 3
Request Info...
...
...
... purified Formulation: 50mM Tris-HCl, pH ... 0.2mM PMSF, 1mM benzamidine, 0.1% ... PP2A1 (Protein Phosphatase 2A1) partially ... sulfate precipitation, QSepharose,amino-hexyl agarose, Superdex ...
Biology Products: