Technical University of Denmark – TechConnect Briefs

Plasmonic Nanopillar Structures for Surface-Enhanced Raman Scattering Applications

Rindzevicius T., Schmidt M.S., Wu K., Thilsted A.H., Lauridsen R.K., Alstrøm T.S., Palla M., Yang J., Boisen A., Technical University of Denmark, DK

Nanosized noble metal structures support localized surface plasmon (LSPR) resonances that depend on their dimensions, shapes and compositions. Particle LSPR’s can be used to spatially confine the incident light and produce enormous electromagnetic field enhancement [...]

Plasmonic Structural Colors For Plastic Consumer Products

Højlund-Nielsen E., Clausen J., Thamdrup L.H., Zalkovskij M., Højlund-Nielsen E., Nielsen T., Mäkelä T., Ahopelto J., Mortensen N.A., Kristensen A., Technical University of Denmark, DK

Today colorants, such as pigments or dyes, are used to color plastic-based consumer products, either as base for solid colored bulk polymer or in inks for surface decoration. After usage, the products must be mechanically [...]

Plasmon enhanced silver quantum cluster fluorescence for biochemical applications

Bernard S., Kutter J.P., Mogensen K.B., Technical University of Denmark, DK

Silver quantum clusters (AgQCs) consisting of typically 4-10 atoms and known to be highly fluorescing in the visible wavelength range. Here, plasmon-enhanced silver quantum cluster fluorescence is employed for chemical sensing in a simple microfluidic [...]

Blueshift of the silver plasmon band using controlled nanoparticle dissolution in aqueous solution

Mogensen K.B., Kneipp K., Technical University of Denmark, DK

In this work, we report the size-dependent blue shift of the silver nanoparticle (AgNP with radius R) plasmon band in aqueous solution by means of UV/VIS spectroscopy. An oxidative dissolution scheme using cyanide in the [...]

Fabrication and Characterization of PEDOT Nanowires Based on Self Assembled Peptide Nanotube Lithography

Ormstrup Christiansen N., Andersen K.B., Castillo-León J., Svendsen W.E., Rozlosnik N., Technical University of Denmark, DK

In this article we demonstrate the use of self-assembled peptide nanotube structures as a masking material in a rapid, mild and low cost fabrication of PEDOT:TsO nanowire device. In this new fabrication approach the PEDOT:TsO [...]

Nanopatterning planar and non-planar mold surfaces for a polymer replication

Cech J., Pranov H., Kofod G., Matschuk M., Murthy S., Cheong L.Y., Taboryski R., Technical University of Denmark, DK

We present a novel process to create nanopatterns on planar and non-planar polymer replication tools, such as metallic molds for an injection molding. Such tools with nanopatterned cavities then allow affordable mass production of nanopatterned [...]

Vertically Aligned Patterned Peptide Nano Wires for Cellular Studies

Taskin M.B., Technical University of Denmark, DK

Over the years, scientific studies have shown that one crucial point when designing biological platforms is the strict environmental conditions required for cell and tissue culturing, such as pH, temperature, medium content and other parameters [...]

All polymer, injection molded nanoslits, fabricated through two-level UV-LIGA processes

Østergaard P.F., Mateucci M., Marie R., Kristensen A., Taboryski R., Technical University of Denmark, DK

Micro- and nanofluidic systems fabricated in silicon and glass substrates are expensive and have long production cycles. To minimize the time used by researchers to fabricate their systems, rather than using them, medium to high [...]

A Pressure Controlled Pinched Flow Fractionation Device for Continuous Particle Separation

Trosborg J., Christiansen T.L., Technical University of Denmark, DK

A demonstration of a pinched flow fractionation device that enables pressure controlled tuning of the separation range of particles. This makes the device ready for easy and cheap mass-production, maintaining great flexibility, and rendering the [...]

Conductive Polymer Microelectrodes for on-chip measurement of transmitter release from living cells

Tylsgaard Larsen S., Matteucci M., Taboryski R., Technical University of Denmark, DK

In this work we present an all-polymer chip for measuring exocytotic release from neuronal cells using electrochemical sensing at a conductive polymer microelectrode. This chip combines several novel aspects, such as the use of conductive [...]