000147747 001__ 147747
000147747 005__ 20250103153613.0
000147747 0247_ $$2doi$$a10.1039/c2nr11525e
000147747 0248_ $$2sideral$$a76224
000147747 037__ $$aART-2012-76224
000147747 041__ $$aeng
000147747 100__ $$aPedro, S. G.
000147747 245__ $$aA ceramic microreactor for the synthesis of water soluble CdS and CdS/ZnS nanocrystals with on-line optical characterization
000147747 260__ $$c2012
000147747 5203_ $$aIn this paper, a computer controlled microreactor to synthesize water soluble CdS and CdS/ZnS nanocrystals with in situ monitoring of the reaction progress is developed. It is based on ceramic tapes and the Low-Temperature Co-fired Ceramics technology (LTCC). As well the microsystem set-up, the microreactor fluidic design has also been thoroughly optimized. The final device is based on a hydrodynamic focusing of the reagents followed by a three-dimensional micromixer. This generates monodispersed and stable CdS and core–shell CdS/ZnS nanocrystals of 4.5 and 4.2 nm, respectively, with reproducible optical properties in terms of fluorescence emission wavelengths, bandwidth, and quantum yields, which is a key requirement for their future analytical applications. The synthetic process is also controlled in real time with the integration of an optical detection system for absorbance and fluorescence measurements based on commercial miniaturized optical components. This makes possible the efficient managing of the hydrodynamic variables to obtain the desired colloidal suspension. As a result, a simple, economic, robust and portable microsystem for the well controlled synthesis of CdS and CdS/ZnS nanocrystals is presented. Moreover, the reaction takes place in aqueous medium, thus allowing the direct modular integration of this microreactor in specific analytical microsystems, which require the use of such quantum dots as labels.
000147747 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000147747 590__ $$a6.233$$b2012
000147747 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b19 / 240 = 0.079$$c2012$$dQ1$$eT1
000147747 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b20 / 151 = 0.132$$c2012$$dQ1$$eT1
000147747 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b12 / 69 = 0.174$$c2012$$dQ1$$eT1
000147747 591__ $$aPHYSICS, APPLIED$$b13 / 128 = 0.102$$c2012$$dQ1$$eT1
000147747 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000147747 700__ $$aPuyol, M.
000147747 700__ $$0(orcid)0000-0002-4746-3139$$aIzquierdo, D.
000147747 700__ $$0(orcid)0000-0002-6144-7928$$aSalinas, I.$$uUniversidad de Zaragoza
000147747 700__ $$aMartinez de la Fuente
000147747 700__ $$aAlonso-Chamarro, J.
000147747 7102_ $$15008$$2800$$aUniversidad de Zaragoza$$bDpto. Ingeniería Electrón.Com.$$cÁrea Teoría Señal y Comunicac.
000147747 773__ $$g4, 4 (2012), 1328-1335$$pNanoscale$$tNanoscale$$x2040-3364
000147747 8564_ $$s643753$$uhttps://zaguan.unizar.es/record/147747/files/texto_completo.pdf$$yPostprint
000147747 8564_ $$s2828113$$uhttps://zaguan.unizar.es/record/147747/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000147747 909CO $$ooai:zaguan.unizar.es:147747$$particulos$$pdriver
000147747 951__ $$a2025-01-03-13:20:35
000147747 980__ $$aARTICLE