Bioinspired Superhydrophobic Nano And Microstructured Surfaces For Drag Reduction And Optoelectronics
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Bioinspired Superhydrophobic Nano And Microstructured Surfaces For Drag Reduction And Optoelectronics
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Author : Felix Vüllers
language : en
Publisher: KIT Scientific Publishing
Release Date : 2018-08-29
Bioinspired Superhydrophobic Nano And Microstructured Surfaces For Drag Reduction And Optoelectronics written by Felix Vüllers and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-29 with categories.
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
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Author : Felix Vüllers
language : en
Publisher:
Release Date : 2020-10-09
Bioinspired Superhydrophobic Nano And Microstructured Surfaces For Drag Reduction And Optoelectronics written by Felix Vüllers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-09 with Transportation categories.
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.
Photon Upconversion Heterostructures Made From Surface Anchored Metal Organic Frameworks
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Author : Oldenburg, Michael
language : en
Publisher: KIT Scientific Publishing
Release Date : 2019-01-22
Photon Upconversion Heterostructures Made From Surface Anchored Metal Organic Frameworks written by Oldenburg, Michael and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-22 with Heterostructures categories.
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.
In Situ Characterization And Modelling Of Drying Dynamics For Scalable Printing Of Hybrid Perovskite Photovoltaics
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Author : Ternes, Simon
language : en
Publisher: KIT Scientific Publishing
Release Date : 2023-03-27
In Situ Characterization And Modelling Of Drying Dynamics For Scalable Printing Of Hybrid Perovskite Photovoltaics written by Ternes, Simon and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-03-27 with Technology & Engineering categories.
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.
Innovative Micro Nmr Mri Functionality Utilizing Flexible Electronics And Control Systems
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Author : Nassar, Omar
language : en
Publisher: KIT Scientific Publishing
Release Date : 2023-08-15
Innovative Micro Nmr Mri Functionality Utilizing Flexible Electronics And Control Systems written by Nassar, Omar and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-08-15 with categories.
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).
Advanced Elastocaloric Cooling Devices Based On Shape Memory Alloy Films
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Author : Brüderlin, Florian
language : en
Publisher: KIT Scientific Publishing
Release Date : 2022-11-15
Advanced Elastocaloric Cooling Devices Based On Shape Memory Alloy Films written by Brüderlin, Florian and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-15 with Technology & Engineering categories.
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.
Nmr Micro Detectors Tailored For Multinuclear And Electrochemistry Lab On A Chip Applications
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Author : Davoodi, Hossein
language : en
Publisher: KIT Scientific Publishing
Release Date : 2022-01-14
Nmr Micro Detectors Tailored For Multinuclear And Electrochemistry Lab On A Chip Applications written by Davoodi, Hossein and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-01-14 with Technology & Engineering categories.
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.
Power Generation By Resonant Self Actuation
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Author : Joseph, Joel
language : en
Publisher: KIT Scientific Publishing
Release Date : 2023-12-28
Power Generation By Resonant Self Actuation written by Joseph, Joel and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-12-28 with categories.
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.
Langzeitstabilit T Der Innendr Cke Von Kavernen Benachbarter Mems Sensoren Auf Siliziumbasis
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Author : Kopf, Marlene
language : de
Publisher: KIT Scientific Publishing
Release Date : 2022-03-31
Langzeitstabilit T Der Innendr Cke Von Kavernen Benachbarter Mems Sensoren Auf Siliziumbasis written by Kopf, Marlene and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-03-31 with Technology & Engineering categories.
Aufgrund eines Trends zur Miniaturisierung vieler MEMS-Bauelemente und somit auch der Kavernenvolumina von Inertialsensoren wird der Einfluss geringfügiger Veränderungen der Dämpfungsatmosphäre in Sensorkavernen auf die Zuverlässigkeit der Sensoren immer größer. In dieser Arbeit werden Mechanismen untersucht, die sich auf die Druckstabilität von Gyroskopen auswirken, und Gegenmaßnahmen vorgestellt. Ein Schwerpunkt liegt auf Desorptionsquellen sowie Gasdiffusionspfaden im Sensoraufbau. - Due to a trend towards miniaturization of many MEMS devices and thus also the cavity volumes of inertial sensors, the influence of slight changes in the damping atmosphere in sensor cavities on the reliability of the sensors is increasing. In this work, mechanisms affecting the pressure stability of gyroscopes are investigated and countermeasures are presented. A focus is placed on desorption sources as well as gas diffusion paths in the sensor layer stack.
Refraktive Multifokusr Ntgenlinsen Und Hartmann Shack Sensoren
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Author : Opolka, Alexander
language : de
Publisher: KIT Scientific Publishing
Release Date : 2024-08-15
Refraktive Multifokusr Ntgenlinsen Und Hartmann Shack Sensoren written by Opolka, Alexander and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-08-15 with categories.
Refraktive Röntgenlinsen (engl.: Compound Refractive X ray Lenses, CRLs) weisen eine absorptionsbegrenzte numerische Apertur auf. In dieser Arbeit wird ein Feld von CRLs mit jeweils leicht geneigten optischen Achsen verwendet, um diese Limitierung bei der Vollfeldmikroskopie an Laborquellen zu umgehen. Unter anderem wird auf die röntgentiefenlithografische Herstellung von CRLs eingegangen und parallele Felder von CRLs diskutiert (Hartmann-Shack-Wellenfrontsensor, rasternde Abbildungsverfahren). - Compound refractive X-ray lenses (CRLs) have an absorption-limited numerical aperture. In this work, an array of CRLs with slightly inclined optical axes is used to circumvent this limitation in full-field microscopy at laboratory sources. Among other things, fabrication of CRLs via deep X-ray lithography and parallel fields of CRLs (Shack-Hartmann wavefront sensor, scanning imaging methods) are discussed.