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 20 of 32 for “"Nanoelectromechanical"”.
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Graphene NanoElectroMechanical Resonators and Oscillators
… graphene is the ideal building block for NanoElectroMechanical Systems (NEMS). In the first parts of the thesis, I will discuss the fabrications and measurements of typical graphene NEMS resonators, including doubly clamped and fully clamped graphene mechanical resonators. I have developed …
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Electrostatic Analysis of Nanoelectromechanical Systems
In addition to the multiscale method, we present an ab initio study of electronic properties of graphene flakes and nanoribbons adsorbed on clean and H-passivated (100) silicon surfaces. The graphene electronic properties are not perturbed by the H-passivated Si substrate. In contrast, the …
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Computational Analysis of Silicon Nanoelectromechanical Systems
Next, we extend the quasicontinuum (QC) approach for multiscale analysis of silicon nanostructures at finite temperature. Three models, namely the real space quasiharmonic (QHM) model, the local quasiharmonic (LQHM) model, and the reciprocal space quasiharmonic (QHMK) model are investigated. Within …
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Modeling and characterization of nanoelectromechanical systems
Microelectromechanical structures (MEMS) are used commercially in sensor applications and in recent years much research effort has been done to implement them in wireless communication. Electron beam lithography and other advancements in fabrication technology allowed to shrink the size of MEMS to …
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Design and Optimization of Tunneling Nanoelectromechanical Switches
… (CMOS) technology nears its scaling limits, nanoelectromechanical (NEM) switch relays have emerged as promising candidates for complementing CMOS technology due to their superior characteristics, including zero leakage, steep subthreshold swings, high on-of current ratios, and robustness in …
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Development of Nanoelectromechanical Resonators for RFIC Applications
… modeling, fabrication and characterization of nanoelectromechanical (NEM) single crystal silicon resonators. The potential advantages associated with these devices are high-Q, small die area and low power consumption. The development of such devices compatible with modern integrated circuit …
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Novel nanoelectromechanical systems for probing and exploiting nanomaterial properties
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Tunneling nanoelectromechanical switches based on compressible self-assembled molecules
Nanoelectromechanical (NEM) switches are investigated as a promising candidate for energy-efficient logic devices. They promise quasi-zero static leakage, large on-off current ratio, small subthreshold slope and high robustness in harsh environments. However, strong van der Waals interaction at the …
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Nanomechanical and nanoelectromechanical phenomena in 2D-atomic crystals : a scanning probe microscopy approach
… we probe the morphological, nanomechanical and nanoelectromechanical properties of 2D materials: graphene, MoS2 and h-BN. Throughout this study we extensively use scanning probe techniques of ultrasonic force microscopy (UFM), direct-contact electrostatic force microscopy (DC-EFM) and heterodyne …
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Impact of the van der Waals interface on the mechanics of 2D nanoelectromechanical systems
The student, Sunphil Kim, accepted the attached license on 2020-02-24 at 16:07.
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The design and fabrication of an optical nanoelectromechanical switch based in a III-V material system
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Nonplanar Nanofabrication via Interface Engineering
… ultrathin nanostructures as building blocks of nanoelectromechanical systems by extending conventional planar techniques to nonplanar designs. We achieve this by engineering interface forces through a patterned molecular monolayer to enable controlled delamination of a deposited thin-film in …
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Architecture study of a 3D CMOS-NEM FPGA
… named 3D CMOS-NEM FPGA, which utilizes nanoelectromechanical (NEM) relays and 3D integration techniques synergistically. Unique features of our architecture include: hybrid CMOS-NEM FPGA look-up tables (LUTs) and con gurable logic blocks (CLBs), NEM-based switch blocks (SBs) and …
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DIMENSIONALITY REDUCTION OF 2D MATERIALS: NANODEVICES AND IN-SITU NANOMECHANICAL ANALYSIS
… nanoscrolls can be used as active materials in nanoelectromechanical systems (NEMS) to produce devices with increased sensitivity at the atomic level.
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Theoretical Study of Carbon-Based Materials and Their Applications in Nanoelectronics
… advantage of tuneable energy bandgap such as nanoelectromechanical devices. Recent development in obtaining GNRs by unzipping carbon nanotubes has made the prospect of fabricating GNR-based electronic devices in large quantities more promising and hence, detailed understanding of the device …
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Characterization of Mechanical Properties at the Micro/Nano Scale: Stiction Failure of MEMS, High-Frequency Michelson Interferometry and Carbon NanoFibers
… in MicroElectroMechanical Systems (MEMS) and NanoElectroMechanical Systems (NEMS) - a.k.a. stiction-failure. The adhesive forces between MEMS devices leading to stiction failure are characterized in this dissertation analytically and experimentally. Specifically, the adhesion energy of poly-Si …
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Electromechanical modulation of electrical conduction through organic thin films for switching applications
Nanoelectromechanical (NEM) switches exhibit abrupt switching behavior and near-zero leakage current making them promising alternatives to conventional semiconductor switches. However, they require high actuation voltages and commonly suffer from permanent adhesion of device components leading to …
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Carbon nano-relays for low power switching
In this thesis two unique carbon based nanoelectromechanical switches or carbon nano-relays are demonstrated as a toolkit for investigating NEMs based low power switching. The first is a vertical carbon nano-relay, consisting of a vertically aligned carbon nanotube/fiber (CN) between two contacts …
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Carbon nanotube-based nanorelays for low-power circuit applications
… a vertically-oriented carbon nanotube-based nanoelectromechanical switch that has no off-state leakage current. This switch, called a nanorelay, is a mechanical switch that uses a carbon nanotube as the active component. The device consists of a line of carbon nanotubes grown on a …
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Architecture and CAD for nanoscale and 3d FPGA
… carbon nanotube array), and NEM FPGA (nanoelectromechanical FPGA), which utilize 3D integration techniques and new nanoscale materials synergistically. Customized CAD flows that consider process variation have been developed for different architectures to evaluate their potential …
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