17 documents found

Dissertation
All rights reserved
2020-12-15

Constructing pseudocapacitive electrodes for supercapacitors based on rationally...

Supercapacitors are of high importance as electrochemical energy storage devices attributing to their outstanding power performance, excellent reversibility and long cycle life. However, compared with batteries, supercapacitors suffer from low energy density, which hinders their wide application. Pseudocapacitive...
Dissertation
All rights reserved
2020-02-26

Boosting solar energy harvesting with ordered nanostructures fabricated...

To date, technical development has boosted the efficiencies of solar energy conversion devices with conventional planar architectures to be close to the respective theoretical values, which are hard to be further improved without reforming the device structures. Alternatively, ordered nanostructure arrays...
Article / Chapter
CC BY 4.0
2019-10-28

Integrated multilayer stretchable printed circuitboards paving the way...

Conventional rigid electronic systems use a number of metallization layers to route all necessary connections to and from isolated surface mount devices using well-established printed circuit board technology. In contrast, present solutions to prepare stretchable electronic systems are typically confined...
London: Nature Publishing Group UK, 2019-10-28
Article / Chapter
CC BY 4.0
2019-08-05

Fluidic self-assembly on electroplated multilayer solder bumps with tailored transformation...

This communication presents fluidic self-assembly of Si-chip on a sequentially electroplated multilayer solder bump with tailored transformation imprinted melting points. The multilayer solder bump is a lead free ternary solder system, which provides a route to transform the melting point of interconnects...
London: Macmillan Publishers Limited, part of Springer Nature, 2019-08-05
Dissertation
All rights reserved
2018-06-29

Metamorphic stretchable electronics

Die jüngsten Fortschritte auf dem Gebiet der Elektronik wenden sich der Realisierung mechanischer dehnbarer Elektroniken zu. Diese sind in der Lage sich umzuwandeln um neue Formfaktoren anzunehmen. Um eine nahtlose Integration der Elektronik in unsere Alltagsgegenstände und viele weitere Anwendungsfelder...
Dissertation
All rights reserved
2017-07-04

Vierpunktmessungen an freistehenden Nanodrähten mit einem Multispitzen-Rastertunnelmikroskop

In dieser Arbeit wird die Schaffung der präparativen Voraussetzungen für das Nanodrahtwachstum, die Inbetriebnahme des komplexen MTSTMs für Nanodraht-Charakterisierung und erste Experimente mit anschließenden Analysen an ersten Proben vorgestellt. Zunächst wurden entsprechende Prozessparameter für Präparation...
Dissertation
All rights reserved
2017-02-08

Structural parameters (size, defect and doping) of ZnO nanostructures and...

The performance and properties of the ZnO nanostructure-based devices (mainly including the wire-like and leaf-like structure) are highly dependent on the sizes, defects and doping of ZnO. Therefore, it is necessary to investigate these parameters in the ZnO nanostructure for optimizing its properties,...
Article / Chapter
CC BY 4.0
2016-12-09

Deformable printed circuit boards that enable metamorphic electronics

A method to produce single-layer deformable and stretchable printed circuit boards is reported and applied to enable the realization of metamorphic electronic products that can take on new three-dimensional (3D) shapes. The models contain arrays with packaged surface mount devices and bare dies that...
London: Macmillan Publishers Limited, 2016-12-09
Article / Chapter
CC BY 4.0
2016-07-07

Surface tension directed fluidic self-assembly of semiconductor chips across...

This publication provides an overview and discusses some challenges of surface tension directed fluidic self-assembly of semiconductor chips which are transported in a liquid medium. The discussion is limited to surface tension directed self-assembly where the capture, alignment, and electrical connection...
Ilmenau: ilmedia, 2016-07-07
Dissertation
2016-03-03

Binary Nano-structuring : Concept, Strategies, Features and Devices

Nanostrukturarrays, bestehend aus den zwei Unterteilungen „Nanostruktur“ und „Array“, sind elementar für viele moderne und zukünftige technologische Anwendungen oder Systeme. Binäre Nanostrukturarrays, in denen beide, die „Nanostruktur“ und die „Array“, unabhängig voneinander eingestellt und genutzt...
Article / Chapter
CC BY-NC 4.0
2015-12-21

Approaching gas phase electrodeposition: process and optimization to enable...

A nanowire bonding process referred to as gas‐phase electrodeposition is reported to form nanobridge‐based interconnects. The process is able to grow free‐standing point‐to‐point electrical connections using metallic wires. As a demonstration, programmable interconnects and an interdigitated electrode...
Weinheim: Wiley-VCH, 2015-12-21
Dissertation
2015-06-17

Nanostrukturierte Ladungsträgergase für nicht-klassische Bauelementekonzepte

After several decades of silicon-based transistor semiconductor technology in the industry research is more and more focussing on alternative materials and devices to excess nowadays boundaries. This work is dealing with both of these approaches. On one hand AlGaN/GaN will be presented as example...
Article / Chapter
CC BY-NC-ND 4.0
2015-05-12

Millimeter thin and rubber-like solid-state lighting modules fabricated...

A millimeter thin rubber‐like solid‐state lighting module is reported. The fabrication of the lighting module incorporates assembly and electrical connection of light‐emitting diodes (LEDs). The assembly is achieved using a roll‐to‐roll fluidic self‐assembly. The LEDs are sandwiched in‐between a stretchable...
Weinheim: Wiley-VCH, 2015-05-12
Dissertation
2015-04-03

Three-dimensional nanostructures, pseudocapacitive materials and asymmetric...

Superkondensatoren sind vielversprechende elektrochemische Energiespeicher, die sich insbesondere durch hohe spezifische Leistung und exzellente Zyklenstabilität auszeichnen. Allerdings muss die spezifische Energie von Superkondensatoren deutlich erhöht werden, damit die Anforderungen moderner Technologien...
Article / Chapter
CC BY-NC-ND 4.0
2014-10-27

Active matrix-based collection of airborne analytes: an analyte recording...

In the field of sensors that target the detection of airborne analytes, Corona/lens‐based‐collection provides a new path to achieve a high sensitivity. An active‐matrix‐based analyte collection approach referred to as “airborne analyte memory chip/recorder” is demonstrated, which takes and stores airborne...
Weinheim: Wiley-VCH, 2014-10-27
Article / Chapter
CC BY-NC-ND 3.0
2014-06-27

A first implementation of an automated reel-to-reel fluidic self-assembly...

A first automated reel-to-reel fluidic selfassembly process for macroelectronic applications is reported. This system enables high-speed assembly of semiconductor dies (15 000 chips per hour using a 2.5 cm-wide web) over large-area substrates. The optimization of the system (>99% assembly yield) is based...
Weinheim: Wiley-VCH, 2014-06-27
Article / Chapter
CC BY-NC-SA 3.0
2013-03-27

Effective localized collection and identification of airborne species through...

Various nanostructured sensor designs currently aim to achieve or claim single molecular detection by a reduction of the active sensor size. However, a reduction of the sensor size has the negative effect of reducing the capture probability considering the diffusion-based analyte transport commonly used....
London: Nature Publishing Group UK, 2013-03-27