High-pressure/high-temperature microreactors for nanostructure synthesis.
Chemically synthesized nanomaterials, such as nanocrystalline quantum dots, are being considered as the active element in many applications, including photovoltaics, displays, and biochem sensing. To realize the promise of these devices, it will be critical to have an efficient, reproducible synthes...
| Publicado en: | JALA: Journal of the Association for Laboratory Automation Vol. 14; no. 6; pp. 367 - 374 |
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| Autores principales: | , , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Elsevier B.V.
Dec2009
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105267095&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105267095 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15355535 YU9 jtl: JALA: Journal of the Association for Laboratory Automation issn: 15355535 maglogo: N pubinfo: dt: Dec2009 vid: 14 iid: 6 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 105267095 2010508101 10.1016/j.jala.2009.06.005 105267095 ppf: 367 ppct: 7 formats: tig: atl: High-pressure/high-temperature microreactors for nanostructure synthesis. aug: au: Marre S Baek J Park J Bawendi MG Jensen KF affil: Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA sug: subj: Laboratory Equipment and Supplies Nanostructures Nanotechnology Equipment and Supplies Chemistry, Analytical Equipment Design Funding Source In Vitro Studies ab: Chemically synthesized nanomaterials, such as nanocrystalline quantum dots, are being considered as the active element in many applications, including photovoltaics, displays, and biochem sensing. To realize the promise of these devices, it will be critical to have an efficient, reproducible synthesis technique of the nanostructures. Currently, nanoparticles are synthesized in a batch mode in small volumes, which is appropriate for studying the fundamental properties of nanosized structures and for developing proof of principle device structures. However, batch synthesis suffers from control of size, size distribution, and quality of the nanomaterial from batch to batch. Moreover, there is an inherent difficulty in scaling up to quantities more reasonable for device development and optimization. Continuous-flow reactors based on microfluidics (microreactors) integrated with heaters and fluid control elements offer a solution to these problems and additional advantages. We describe continuous synthesis of nanostructures in microfluidic systems consisting of multiple sub-millimeter-sized channels in which fluid flows continuously and chemical reactions take place. The small reaction volumes combined with the high heat and mass transfer rates enable reactions to be performed under more controlled conditions with higher yields than can typically be achieved with conventional reactors. Moreover, manipulation of reaction parameters, while the reaction proceeds, allows optimization of synthesis conditions. The ability to work at elevated temperatures and pressures while confining potentially toxic, high reactive starting materials will become important for the synthesis of novel nanostructured materials. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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