Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"flexible devices"”.
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Bend Passwords: Using Gestures to Authenticate on Flexible Devices
Upcoming mobile devices will have flexible displays, allowing us to explore new forms of user authentication. On flexible displays, users interact with the device by deforming the surface of the display through bending. In this thesis, we present a new type of user authentication that uses bend …
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Investigation On the Surface Morphology Of Metal Anodes In Zinc Air Batteries With Non-Aqueous Aprotic Deep Eutectic Solvent Electrolytes
With recent advances in printing for flexible electronics, the demand for flexible energy storage systems with large power densities are required. While traditional Lithium ion battery systems cannot support these flexible devices, the Zinc-air system with its high energy and power density, is a …
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Flexible sensors for high-quality recording and human-computer interface
… (SNR) ratio for long-term and stable recording. Flexible devices are emerging. The flexible human-machine interface requires fundamental research in materials, mechanism, device design, and fabrication. This work focuses on developing flexible devices for human-computer interfaces which collect …
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Solar Energy Conversion and Control Using Organic Photovoltaic Cells
… technologies that are lightweight, mechanically flexible devices with highthroughput processes from low cost material in a variety of colors. Rathnayake et al. of Western Kentucky University have developed a nanostructure-based OPV cell. Presented in this thesis is a model and simulation of a …
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Flexible and substrate-free optoelectronic devices based on III-V semiconductor nanowires
… suited for high-performance opto-electronic devices. Since epitaxial growth is on expensive, brittle, crystalline substrates, the field of flexible devices has been little explored in the context of III-V nanowires. In order to fully exploit these properties and move away from conventional …
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Exploring Thumb Input on Flexible Tablets
Flexible displays offer new interaction techniques such as bend gestures, but little work has been done to support touch input. Touch is the most common input method for handheld devices. We explore the potential of touch input using the thumb of the holding hand on flexible displays. We conducted …
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Characterization and connectorization of optoelectronic neural probes
… can be significantly improved through the use of flexible polymer and polymer composite neural stimulation and recording systems. Furthermore, recent advances in optical neural stimulation methods would benefit from seamless integration of optical waveguides into neural probes. In this thesis, we …
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Development and Characterization of Flexible Double-Gate Organic Transistors for Sensing Applications
… in the 21st century. The possibility to realize flexible devices in a large area gives this field of research a particular interest, since it opens the doors to a multitude of new possible applications. Particular interest has been given to the possible biological and biomedical aspects of such …
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The Electrical and Mechanical Study of the Flexible Organic Light Emitting Diodes
… can still be considered to be applied in the flexible devices. The stress in the indium-tin-oxide (ITO) of the multi layer OLED device when being bent is then calculated using this elastic parameter. A buffer layer inserted between the ITO and PET substrate with an optimized Young’s modulus …
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Synthesis, characterization and properties of hybrid organic - inorganic perovskites for photovaltaic applications
… direction. To explore potential applications in flexible devices, crystals of single (Pb-based) and double (Bi-based) perovskites were probed by nanoindentation and their mechanical properties, such as Young’s moduli (E) (10 – 20 GPa) and hardnesses (H) (0.2 -0.5 GPa), were determined. The …
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Flexible Electronics Based on Solution Processable Organic Semiconductors and Colloidal Semiconductor Nanocrystals
… for the large-area, low-cost fabrication of flexible electronics. Recent advances in flexible electronics have introduced new functional devices such as light-weight displays and conformal sensors. However, key challenges remain to develop flexible devices from emerging materials that use …
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Soft pneumatic devices for blood circulation improvement
… development and testing of some soft pneumatic flexible devices meant to apply an intermittent massage and to restore blood circulation in lower limbs in order to improve cardiac output and wellness in general. The choice of the actuators, as well as the pneumatic circuits and air distribution …
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Computer relaying for EHV/UHV transmission lines
… use the transmission network, more nonlinear flexible devices such as the phase shifter and the advanced compensation system will be put into use. Once a fault occurs on such a system, a delay in clearing the fault is usually not permissive. This requires a new generation of relays which have …
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Two-dimensional transition metal dichalcogenides as next generation semiconductor materials
… including sensors, photode- tectors, flexible devices, optoelectronics, electronic (logic and memory) devices and green energy. This thesis focuses on the possible use of TMDs for the 3D back end of line (BEOL) integration of logic and memory and it investigates some of these …
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Self-interaction and charge transfer in organic semiconductors
… paved the way for a new class of electronic devices such as organic light-emitting diodes, transistors, or solar cells. Despite an inferior efficiency as compared to commonly used silicon-based technologies, organic semiconductors promise the advent of fully flexible devices for large-area …
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ADDITIVES FOR THE IMPROVEMENT OF THE PERFORMANCE OF ORGANIC AND HYBRID PHOTOVOLTAIC
… developments in the perspective of scale-up with flexible and transparent supports, make organic photovoltaics very attractive for marketing and inclusion in everyday objects. Even though the device efficiencies increased rapidly, further progresses are fundamental to improve the device stability …
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Liquid crystal photonic devices based on conductive polymers = Dispositivos fotónicos de cristal líquido basados en polímeros conductores
… responses in asymmetric liquid crystal devices, and manufacturing and characterization of liquid crystal lenses using conductive polymers as high resistivity electrodes. In the first part, several series of liquid crystal devices with dissimilar alignment layers (SiOx, slippery surface …
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Formation of three-dimensional graphene structures by controlled thermal activation of polymeric shape memory substrates
… a pathway to realizing 3D all carbon-based devices and sensors.