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we are reporting the fabrication of reduced graphene oxide (RGO) - silver (Ag) nanocomposite films for temperature sensor application on the basis of negative temperature coefficient (NTC) resistive element. The nanocomposite was successfully prepared by the solution mixing of RGO nanosheets and Ag metal nanoparticles in N-Methyl-2-Pyrrolidone (NMP) using ultrasonication process. It was found that,...
The Institute of Micro-and Nanotechnology MacroNano® at Technische Universität Ilmenau was founded in 2005 to provide a structural base for interdisciplinary research ranging from basic to applied and application-oriented research with a strong focus on nano- and microsystems. It comprises the competences of several engineering and natural science groups of the university. The paper will cover current...
We report a simple method to fabricate a patterned ultrathin metal membrane with hexagonally arrayed sub-50 nm nanopores based on hydrophilicity-templated self-assembly monolayer (SAM) of polystyrene (PS) nanoparticles. Photolithography assisted hydrophilicity-template defines the membrane pattern, in which the arrayed nanopores are transferred from the hexagonally packed polystyrene nanoparticles...
We demonstrated the fabrication of complex nanostructured InP membranes with porous compact packed structure that have been cut during electrochemical etching in the same anodic process. The membranes were filled with optically transparent compounds. We considered the covering of the nanoporous film and filling the pores with polymers imprinted with nano metallic particles in order to stabilize and...
Highly sensitive and selective biomarker detection is required for early detection of hepatocellular carcinoma (HCC). Disease progression has been shown to correlate with specific fucosylation of a validated HCC serum glycoprotein biomarker, alpha-fetoprotein (AFP) Carbohydrate binding proteins, such as lectins, can be used as diagnostic indicators for monitoring glycosylation changes during disease...
Gold nanorods (GNRs) show enhanced absorption in the near infrared (NIR) region and can be conveniently employed for selective conversion of light into heat. We have succeeded in fabricating hybrid GNRs-polysaccharides composites in the form of semi-solid formulations, films or hydrogels, with good biocompatibility, enhanced stabilization in physiological environment and under laser irradiation and...
This paper reports a new class of biosensors based on composite nanomaterial thin film. The composite nanomaterial film is synthesized using a simple vacuum filtration method. Using composite nanomaterial film, we can not only simplify the positioning and integration fabrication process of nanoscale materials into a functional device, but also enhance the sensing surface area significantly, which...
A virus-gold nanoparticle (AuNP) composite film was prepared through the layer-by-layer assembly of cationic filamentous virus (M13 phage) particles (displaying a positively charged peptide on the major coat) and anionic spherical AuNPs. The surface plasmon resonance (SPR) for AuNPs in the virus-nanoparticle nanocomposite films was found to be sensitive to the environmental humidity. In air, both...
Gold nanoneedles arrays were fabricated on glass substrates using an ion-beam sputtering technique. Gold nanoneedles with a tunable length and base diameter of 200 nm were formed with a density of 20 ??m-2. The sharp tips of the nanoneedles exhibited an apex diameter of 20 nm and an apex angle of 20??. These arrays were evaluated as potential surface-enhanced Raman scattering (SERS) substrates using...
Metallic nanoparticle based surface plasmon resonance (LSPR) nanosensor can achieve high sensitivity in the detection of low-profile biomarkers. But such sensors usually require long annealing process to obtain reliable signals. In order to reduce annealing time, we have used polyelectrolyte multilayers to stabilize the structural changes of nanoparticles. The multilayers are deposited layer-by-layer...
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