Electric Field Assisted Assembly of Functionalized Quantum Dots into Multiple Layer Thin Films
نویسندگان
چکیده
A CMOS electronic microarray device was used to carry out assisted self-assembly of quantum dots into multilayer structures. CMOS electronic microarrays produce reconfigurable DC electric fields that allow DNA, proteins and other charged molecules to be rapidly transported from the bulk solution and addressed to any activated site on the array surface. Such a device was now used to carry out rapid highly parallel assisted selfassembly of biotin and streptavidin derivatized quantum dots into multilayer structures. Nanoparticle addressing could be carried out in 15 seconds or less, and was monitored by changes in fluorescence as each quantum dot layer was deposited. Some final multilayered 3D nanostructures were examined by SEM.
منابع مشابه
Controllable photoluminescence enhancement of CdTe/CdS quantum dots thin films incorporation with Au nanoparticles
Au nanoparticles (Au NPs)/CdTe/CdS QDs nanocomposite films were fabricated by deposition of Au NPs and layer-by-layer self-assembly of colloidal CdTe/CdS QDs. Photoluminescence (PL) spectra showed that Au NPs incorporation resulted in an increase of PL intensity about 16-fold compared with that of the samples without Au NPs. PL enhancement of Au NPs/CdTe/CdS QDs nanocomposite films can be contr...
متن کاملOrdered fabrication of luminescent multilayered thin films of CdSe quantum dots.
The surface of CdSe nanoparticles was functionalized with 11-hydroxyundecanoic acid (11-HUDA) during in situ preparation to afford stable and highly luminescent quantum dot (QD) solutions. The reactivity of the hydroxyl groups of 11-HUDA was then utilized in carbamate bond forming reactions with diisocyanate-bearing molecules that serve as linkers in the fabrication of the multilayered CdSe qua...
متن کاملThin film photodiodes fabricated by electrostatic self-assembly of aqueous colloidal quantum dots
In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: Thin film photodiodes fabricated by electrostatic self-assembly of aqueous colloidal quantum dots a b s t r a c t a r t i c ...
متن کاملFinding Electrostatics modes in Metal Thin Films by using of Quantum Hydrodynamic Model
In this paper, by using a quantum hydrodynamic plasma model which incorporates the important quantum statistical pressure and electron diffraction force, we present the corrected plasmon dispersion relation for graphene which includes a k quantum term arising from the collective electron density wave interference effects (which is integer and constant and k is wave vector). The longitudinal ...
متن کاملOptical, Fluorescent, and (Photo)conductive Properties of High-Performance Functionalized Pentacene and Anthradithiophene Derivatives
The optical, fluorescent, and photoconductive properties of solution-processable functionalized pentacene and anthradithiophene (ADT) derivatives are presented. Considerable fluorescence quantum yields of ∼70-75% and ∼40-50% were observed in several ADT derivatives in toluene solutions and in thin films, respectively. No electric field-induced fluorescence quenching was observed in films at app...
متن کامل