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Laboratory of Nanotechnology - L1
Head of the Laboratory: Dr. Irina Kleps
ELECTRICAL/ELECTROCHEMICAL CHARACTERISATION AND APPLICATION DEVELOPMENT
Contact person: Dr. Mihaela Miu ([email protected])
The electrical / electro-chemical characterization of the complex structures, i.e. composite / polycrystalline materials, bio-hybrid interfaces, as well as impedimetric detection of electrochemical events taking place at bio-sensor surfaces are achieved using the facilities of Experimental Laboratory for Biointerface Characterisation
- Electrochemical Impedance Spectrometer - PARSTAT 2273 (Princeton Applied Research);
- Scanning Electrochemical Microscope – EIProScan (HEKA)
Research directions:
- development ofelectrochemical deposition methods of metallic nanocatalyst for miniaturized fuel cell application;
- subsequently determination of the electroactive surface and corresponding catalytic properties of metallic nanoparticle catalyst and study of the protonic conduction in polymeric or composite membrane.
Reported results
- “Electrocatalytic Activity of Platinum Nanoparticles Supported on nanoSilicon” presented to EMRS’09 and submitted for publication to Fuel Cell journal;
- “Study of membrane - electro-catalyst nanocomposite assemblies on silicon for fuel cell application” - PNII-IDEI Research Project (2007-2010);
- “Miniaturised power source for portable electronics realised by 3D assembling of complex hybrid micro- and nanosystems (MiNaSEP)” - PNII – Parteneriat Programme (2007-2010);
Research directions:
- analysis of the surface-interface electronic properties electronic transport in composite materials (contribution of surface electronic state to electron transport – electric transfer in nanocomposite materials);
- technological processes analysis, as, for example, fabrication of a self-assembled thiols monolayer on nanopatterned gold layer surface used in molecular recognition for probe-functionalised biosensing layers development; the results of electrochemical characterisation of packing density and distribution of pinhole defects in experimental self-assembled monolayers – electron transfer through self-assembled alkanethiol;
- significant improvement of protein detection achieved by impedimetric measurements.
Reported results
- „Electronic properties of metallic / porous semiconductor - electrolyte interface” accepted for presentation to 10th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures, Sept. 21 - 25, 2009, Granada (Spain);
- “Electrochemical characterization of BSA/11-mercaptoundecanoic acid on a Au electrode”, T. Ignat, M. Miu, I. Kleps, A. Bragaru, M. Simion, M. Danila, presented to EMRS’09 and submitted for publication to
- „Study of the micro- and nanostructured silicon for biosensing and medical applications”, I. Kleps, M. Miu, M. Simion, T. Ignat, A. Bragaru, F. Craciunoiu, M. Danila, Journal of Biomedical Nanotechnology 5, 1–10, (2009);
- “Study of silicon-protein type biohybride nanostructured surfaces with applications in bio(nano)senzing” – PNII – IDEI Programme (2007-2010);
Research direction: study of metallic nanoparticles catalytic properties and corresponding increased electroactive surface - conductive sensing interface for electroanalysis;
Reported results
- complementary optical and electro-chemical analyses have been presented in
- "Metal – Semiconductor Nanoassemblies for Improving of Sensing Efficiency”,M. Miu, I. Kleps, F. Craciunoiu, T. Ignat, M. Simion, A. Dinescu, A. Bragaru, M. Danila, ECS Transaction, ISSN: 1938-5862, vol 25, in print (2009);
Research direction: development of label-free biosensors based on impedance spectroscopy as detection tool for analyzing of interfacial properties changing by binding of charged biomolecules on surface and for biomolecular interactions studies;
Reported results:
- „Electrochemical investigation of Porous Silicon/Gold system in biological electrolyte”, M. Simion, I. Kleps, M. Miu, Mihai Danila, AdinaBragaru, accepted for presentation to 216th ECS Meeting - Vienna, Austria
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