| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Bergmann, Alexander
Graz University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Comparative analysis of fabrication techniques for sensing windows on silicon nitride waveguide platforms
- 2024Millimeter Wave Metamaterial-based Strain Sensor Concept
- 2023Large-scale automated emission measurement of individual vehicles with point samplingcitations
- 2022Humidity Responsive Reflection Grating Made by Ultrafast Nanoimprinting of a Hydrogel Thin Filmcitations
- 2021Silicon Nitride Photonic Particle Detector-Experiments and Model Assessmentcitations
- 2020Vacuum-Assisted Selective Adhesive Imprinting for Photonic Packaging of Complex MOEMS Devicescitations
- 2020Fast optical humidity sensor based on nanostructured hydrogels
- 2019Vacuum-assisted selective adhesive imprinting for heterogeneous system integration of MOEMS devices
- 2019Fast Optical Humidity Sensor Based on Hydrogel Thin Film Expansion for Harsh Environmentcitations
- 2019State Estimation Approach of Lithium-Ion Batteries by Simplified Ultrasonic Time-of-Flight Measurementcitations
- 2018First Steps towards a Super-Compact in-situ Laser-Induced-Incandescence Sensor System
- 2017Modelling chemical degradation of ionomer in a polymer electrolyte fuel cell
- 2004Interpretation of small-angle scattering data of inhomogeneous ellipsoidscitations
- 2004Small Angle X-Ray Scattering with Cobalt Radiation for Nanostructure Characterization of Fe-Based Specimen
- 2000Evaluation of small-angle scattering data of charged particles using the generalized indirect Fourier transformation techniquecitations
Places of action
| Organizations | Location | People |
|---|
article
Humidity Responsive Reflection Grating Made by Ultrafast Nanoimprinting of a Hydrogel Thin Film
Abstract
The response time of state of the art humidity sensors is approximately 8 s. A faster tracking of humidity change is especially required for health care devices. We focused our research on the direct nanostructuring of a humidity-sensitive polymer thin film and combined it with an optical read-out method. Our goal was to improve the response time by changing the surface-to-volume ratio of the thin film and to test a different measurement method compared to state of the art sensors. Large and homogeneous nanostructured areas were fabricated by nanoimprint lithography on poly(2-hydroxyethyl methacrylate) thin films. Those thin films were made by initiated chemical vapor deposition (iCVD). To the author's knowledge, this is the first time nanoimprint lithography was applied on iCVD polymer thin films. With the imprinting process we developed a diffraction grating in the visible wavelength regime. The optical and physicochemical behavior of the nanostructures was modeled with multi-physic simulations. After successful modeling and fabrication a first proof of concept showed that humidity dependency by using an optical detection of the first diffraction order peak is observable. The response time of the structured thin film resulted to be at least three times faster compared to commercialsensors. This article is protected by copyright. All rights reserved.