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.
Results
Showing 1 to 20 of 33 for “"Metal contact"”.
-
Conductance of Superconductor -Normal Metal Contact Junction Beyond Quasiclassical Approximation
A study of self-consistently obtained solution shows that these corrections often have an effect opposite to each other, or have the same target states; which limits the overall effect. As a consequence even for large Delta/ EF the overall correction is still relatively small, and the conductance …
-
Conductance of Superconductor-Normal Metal Contact Junction Beyond Quasiclassical Approximation
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-23T20:14:06Z No. of bitstreams: 1 Lukic_Vladimir.pdf: 1910221 bytes, checksum: 591ffbc684595d33035f9323c0a0540c (MD5)
-
Kontakto grafenas – metalas formavimas ir elektrinių savybių tyrimas /
In this work, graphene - metal contact theory and recent publications in this field are discussed. Short introduction into graphene structure and its monolayer synthesis as well as graphene transfer methods using polymer coatings are presented. The main idea of this research is to form a graphene – …
-
Investigation of intermediate layer for Ag/Si metal-semiconductor contacts
… layer is a crucial component in thin film metal contacts. In determining Ohmic characteristics, selection of materials used as metal contact can affect device performance. However, in determine a good electrical conductor, it depends on their physical structure which is formed by movement …
-
The effects of thin polymeric surface films on fretting corrosion
… polymer films can prevent fretting between two metals, and if they can, what the protection mechanisms are. This research is a part of fretting corrosion studies currently funded by the Army Research Office. Four thermoplastic polymers were tested for their effectiveness. Two other independent …
-
Characterizing carbon-nanotube devices for an integrated sensor system
… of different nanotubes, which can be either metallic or semiconducting and also vary in diameter. These factors affect the electrical properties, which are important in particular for chemical sensing applications. In this thesis, arrays of CNT field-effect transistors (FET) are fabricated …
-
Modeling and Electrical Characterization of Ohmic Contacts on n-type GaN
… faster operation and efficient performance. The metal contacts on semiconductors are essential as the interface properties affect the semiconductor performance and device operation. The low resistance ohmic contacts for n-GaN have been well established while most p-GaN devices have still high …
-
In situ control of lubricant properties for reduction of power cylinder friction through thermal barrier coating
… generally carries a side effect of increased metal-metal contact in mixed or boundary lubrication, for example near top ring reversal along the engine cylinder liner. A strategy to reduce viscosity without increased metal-metal contact involves controlling the local viscosity away from …
-
PRINTED METALLISATION OF PHOSPHORUS DOPED SILICON SURFACES FOR SOLAR CELL APPLICATIONS
… the development and characterization of printed metallisation methods for high-efficiency silicon wafer solar cells. Metallisation of phosphorus doped surfaces using screen-printed silver (Ag) pastes is a well-established process. However, its performance is limited by several fundamental …
-
A Force Sensor Array for Space Applications
… need for force feedback and spatial awareness of contact in harsh environment applications, such as space servicing, has been unsatisfied due to the inability of current sensor technology to resist environmental effects. In this work, capacitive sensors based on a porous polymer-ceramic composite …
-
Development of Compound Semiconductor FET and Integrated Low -Voltage RF MEMS Switch Technology for Reconfigurable MMIC Applications
… confinement and increase current density. A metal-contact RF MEMS shunt switch has been developed as a low-loss, wide bandwidth passive component, and recent work has focused on achieving good reliability with low actuation voltages. A brief description of the potential integration of RF MEMS …
-
Effects of piston design and lubricant selection on reciprocating engine friction
… the oil film) and boundary lubrication (direct metal-to-metal contact). Design changes that shifted support from the high-friction boundary lubrication regime toward the hydrodynamic regime generally reduced net friction. For example, the model predicted that if a piston is originally supported …
-
Trade-offs between performance and reliability of sub 100-nm RF-CMOS technologies
… to gate-finger spacing, c) optimum source/drain metal contact spacing, and d) floating-body/body-contact. The major contributions from this research are summarized as follows: 1) Role of floating-body effects on the performance and reliability of sub 100-nm CMOS-on-SOI technologies is …
-
SiGe electro-absorption modulators for applications at 1550nm
… is caused by fabrication over-etching during metal contact deposition. Series resistance reduction to ~100[omega] would allow the device to reach the predicted 3dB frequency of 100GHz with 10dB extinction ratio. A pseudo-linear relation is found between the achieved extinction ratio and the …
-
Fundamental and applied aspects of contact electrification
… electrification produced by rolling or sliding contact between a spherical specimen, and a plane dielectric sample. Measurements of the charge transferred to metal contact spheres, and the two-dimensional dielectric surface charge distribution, have been carried out under controlled conditions. …
-
Impact of Electrical Contacting Scheme on Performance of InGaN/GaN Schottky Solar Cells
Realization of low-resistance electrical contacts on both sides of a solar cell is essential for obtaining the best possible performance. A key component of a solar cell is a metal contact on the illuminated side of the cell which should efficiently collect carriers. These contacts can be formed …
-
MOCVD nitridinių p-i-n struktūrų formavimas spinduliuotės jutikliams /
… thick (32 µm) GaN layers were grown using metalorganic chemical vapor deposition technique with process interruptions. Thick GaN as well as doped p and n-type GaN layers were grown on sapphire substrates. Two distinct sensor geometries were chosen for further device fabrication – mesa type …
-
Germanium photodetectors on amorphous substrates for electronic-photonic integration
… and energy efficiency bottlenecks of standard metal interconnects. Integration of photonics in the back-end-of-line (BEOL) of a standard CMOS process enables the advantages of optical interconnects while benefiting from the low cost of monolithic integration. However, processing in the BEOL …
-
Fabrication and photonics properties of III-V semiconductor nanowire structures
… semiconductor-core dielectric-shell (CS) and metal-core semiconductor-shell dielectric-outer shell (CSS) nanowire heterostructures. Those advantages can be even leveraged up by utilizing nanowire arrays, attributing to the increasing optical inter-wire interaction between incident light and …
-
Synthesis, Characterisation and Device Application of Silicon Nanoparticles produced by Mechanical Attrition
… by conducting I ô V measurements on a metal-nanocomposite-metal structure. Further tests for electronic properties like eld e ect mobilities were achieved by using the nanocomposite as the active layer in an insulated gate eld e ect transistor structure. Electrical characterisation …
Page 1 of 2