Fabrication and Analysis of Bio-Inspired Smart Surfaces
Fabrication and Analysis of Bio-Inspired Smart Surfaces

Author: Röhrig, Michael

Publisher: KIT Scientific Publishing

Published: 2014-02-18

Total Pages: 210

ISBN-13: 3731501635

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This work introduces novel techniques for the fabrication of bio-inspired hierarchical micro- and nanostructures. The enormous potential of these techniques is demonstrated by presenting a synthetic gecko-like adhesive matching the adhesion and self-cleaning of geckos very closely and a nanofur which is superhydrophobic, superoleophilic, underwater air-retaining, and even self-healing when surface treated.

Fabrication and Analysis of Bio-Inspired Smart Surfaces
Fabrication and Analysis of Bio-Inspired Smart Surfaces

Author: Michael Röhrig

Publisher:

Published: 2013

Total Pages: 0

ISBN-13: 9781000037906

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This work introduces novel techniques for the fabrication of bio-inspired hierarchical micro- and nanostructures. The enormous potential of these techniques is demonstrated by presenting a synthetic gecko-like adhesive matching the adhesion and self-cleaning of geckos very closely and a nanofur which is superhydrophobic, superoleophilic, underwater air-retaining, and even self-healing when surface treated.

Bioinspired Superhydrophobic Nano- and Microstructured Surfaces for Drag Reduction and Optoelectronics
Bioinspired Superhydrophobic Nano- and Microstructured Surfaces for Drag Reduction and Optoelectronics

Author: Felix Vüllers

Publisher: KIT Scientific Publishing

Published: 2018-08-29

Total Pages: 182

ISBN-13: 3731508168

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Inspired by superhydrophobic leaves of water plants, a flexible superhydrophobic self-cleaning, transparent thin polymeric nanofur film was fabricated through highly scalable hot embossing and hot pulling techniques. Nanofur can retain an air film underwater, whose stability against external stimuli such as high pressure and movement through fluids is investigated. Additionally, the optical properties of nanofur are investigated and exploited to enhance the efficiency of optoelectronic devices.

Photon upconversion heterostructures made from surface-anchored metal-organic frameworks
Photon upconversion heterostructures made from surface-anchored metal-organic frameworks

Author: Oldenburg, Michael

Publisher: KIT Scientific Publishing

Published: 2019-01-22

Total Pages: 182

ISBN-13: 373150863X

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This work deals with the process of photon upconversion in surface-anchored metal-organic frameworks. During the upconversion, two low-energy photons are absorbed and fused into a higher-energy photon, which is emitted. In this work, this process is analyzed in surface-bound metal-organic frameworks by spectroscopic methods. Furthermore, the application for increasing the efficiency of solar cells is discussed.

Development of an Electrochemical Biosensor Platform and a Suitable Low-Impedance Surface Modification Strategy
Development of an Electrochemical Biosensor Platform and a Suitable Low-Impedance Surface Modification Strategy

Author: Pires Carneiro, Leonardo

Publisher: KIT Scientific Publishing

Published: 2014-11-17

Total Pages: 182

ISBN-13: 3731502720

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In this work, a flexible biosensor platform based on impedance spectroscopy and comprising of gold electrodes, polymeric flow cells and a suitable surface modification were developed. Initially, several surface modification techniques described in literature were implemented and optimized for impedimetric biosensors but their individual limitations rendered them unsuitable for this biosensor platform. A novel method based on photobleaching was developed and tested showing satisfactory results.

Power Generation by Resonant Self-Actuation
Power Generation by Resonant Self-Actuation

Author: Joseph, Joel

Publisher: KIT Scientific Publishing

Published: 2023-12-28

Total Pages: 288

ISBN-13: 3731513277

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Die Forschung im Bereich der Mikro-Energiegewinnungssysteme wurde durch den Bedarf an autarken, stabilen Energiequellen für vernetzte drahtlose Sensoren vorangetrieben. Abwärme, insbesondere bei Temperaturen unter 200 °C, stellt eine vielversprechende, aber mit den derzeitigen Umwandlungstechnologien schwer zu gewinnende Energiequelle dar. - Research into micro energy harvesting systems has been driven by the need for self-sustaining, stable power sources for interconnected wireless sensors. Waste heat, particularly at temperatures below 200 °C, presents a promising but challenging energy source to recover using current conversion technology.

Advanced Elastocaloric Cooling Devices Based on Shape Memory Alloy Films
Advanced Elastocaloric Cooling Devices Based on Shape Memory Alloy Films

Author: Brüderlin, Florian

Publisher: KIT Scientific Publishing

Published: 2022-11-15

Total Pages: 292

ISBN-13: 3731510650

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Elastocaloric cooling is an emerging solid-state cooling technology with the potential to provide environmentally friendly, efficient cooling. The elastocaloric effect in superelastic shape memory alloy films is used to develop advanced cooling devices for small-scale applications. Cascaded and parallelized devices are developed to increase device temperature span and cooling capacity. The concepts are proven experimentally, a maximum temperature span of 27° C is achieved in a cascaded device.

Micro- and Nanostructured Microfluidic Devices for Localized Protein Immobilization and Other Biomedical Applications
Micro- and Nanostructured Microfluidic Devices for Localized Protein Immobilization and Other Biomedical Applications

Author: Steidle, Nicole E.

Publisher: KIT Scientific Publishing

Published: 2014-12-23

Total Pages: 166

ISBN-13: 3731502976

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A new immobilization method for the localized adsorption of proteins on thermoplastic surfaces is introduced. Artificial three-phase interfaces were realized by surface structuring to control the wetting behavior which lead to a preferred adsorption in these modified areas. Additionally, different fabrication methods were analyzed to determine mass fabrication capabilities. These fabrication methods also allowed the production of fully structured microchannels to tune the fluids behavior within.

NMR micro-detectors tailored for multinuclear and electrochemistry lab-on-a-chip applications
NMR micro-detectors tailored for multinuclear and electrochemistry lab-on-a-chip applications

Author: Davoodi, Hossein

Publisher: KIT Scientific Publishing

Published: 2022-01-14

Total Pages: 238

ISBN-13: 3731511185

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This work offers three solutions tailored to specific applications to overcome NMR challenges in the micro-domain. As the first sub-topic of this work, different potential electrode designs, compatible with NMR technique, are suggested and experimentally evaluated. As the second focus point, this work tackles multinuclear detection challenges. In parallel, a low-cost, broadband insert is discussed to enhance the sensitivity of standard NMR coils when a small sample volume is available.