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

DOWNLOAD EBOOK

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.

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:

Published: 2020-10-09

Total Pages: 170

ISBN-13: 9781013279003

DOWNLOAD EBOOK

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. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.

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

DOWNLOAD EBOOK

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.

Innovative micro-NMR/MRI functionality utilizing flexible electronics and control systems
Innovative micro-NMR/MRI functionality utilizing flexible electronics and control systems

Author: Nassar, Omar

Publisher: KIT Scientific Publishing

Published: 2023-08-15

Total Pages: 278

ISBN-13: 3731511762

DOWNLOAD EBOOK

The advantages offered by the flexible electronics and control systems technologies were utilized for tackling the challenges facing two crucial Magnetic Resonance (MR) applications. The first application is in the field of interventional Magnetic Resonance Imaging (MRI), and the other application is in the field of Nuclear Magnetic Resonance spectroscopy (NMR).

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

DOWNLOAD EBOOK

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.

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

DOWNLOAD EBOOK

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.

In Situ Characterization and Modelling of Drying Dynamics for Scalable Printing of Hybrid Perovskite Photovoltaics
In Situ Characterization and Modelling of Drying Dynamics for Scalable Printing of Hybrid Perovskite Photovoltaics

Author: Ternes, Simon

Publisher: KIT Scientific Publishing

Published: 2023-03-27

Total Pages: 302

ISBN-13: 3731512556

DOWNLOAD EBOOK

Hybrid perovskite photovoltaics could play a vital role in future’s renewable energy production. However, there are still severe challenges when scaling the technology. In this work, perovskite solution films drying in laminar and slot-jet air flows are investigated extensively by optical in situ characterization. The main results are a quantitative model of perovskite drying dynamics and a novel in situ imaging technique – yielding valuable predictions for large-scale perovskite fabrication.

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

DOWNLOAD EBOOK

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.

Bioinspired Superhydrophobic Surfaces
Bioinspired Superhydrophobic Surfaces

Author: Frédéric Guittard

Publisher: CRC Press

Published: 2017-10-06

Total Pages: 212

ISBN-13: 1351859587

DOWNLOAD EBOOK

Materials with superhydrophobic or related properties are one of the most studied subjects from a theoretical point of view and also for the large range of possible applications, for example, anticorrosion, antibacteria, optical devices, and sensors. The study of natural species with special wettability has shown us the importance of surface structures and the surface energy of the resulting surface properties. Various strategies can be used to reproduce superhydrophobic phenomena in the laboratory. General reviews on superhydrophobic properties already exist but, to our knowledge, do not focus on metallic and inorganic materials. Here, we focus especially on the strategies implemented for reaching superhydrophobic or related properties using metallic and inorganic materials. Indeed, these materials present unique properties, for example, thermal and mechanical resistance, chemical and ageing resistance, and optical (transparency, antireflection, photoluminescence) and electrical properties (conducting, semiconducting, insulating). This book will be useful for graduate students of materials chemistry and physics and for researchers in surface science, nanostructures, and bioinspired or biomimetic materials.

Superhydrophobic Surfaces
Superhydrophobic Surfaces

Author: Mehdi Khodaei

Publisher:

Published: 2020

Total Pages: 130

ISBN-13: 9781838805982

DOWNLOAD EBOOK

During the past decade, the superhydrophobic surfaces, bio-inspired non-wettable surfaces, have aroused worldwide interest. The super water-repellant surface has special characteristics such as low surface energy as well as hierarchical micro/nano surface roughness. These surfaces have many practical applications, from industrial to biomedical applications, including water/oil separation, self-cleaning, drag reduction, anti-fogging, anti-bacterial, anti-fouling, anti-icing, corrosion resistance, as well as many applications in industries such as marine, oil, and gas, aerospace, biomedicine etc. This book presents knowledge on the field of application of superhydrophobic surfaces. Superhydrophobicity has become a hot topic in the academics as well as industries in different engineering and biomedicine research fields.