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Nanoscience and Nanotechnology Commons™
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- Coherent anti-Stokes Raman spectroscopy (1)
- Dielectric thin films (1)
- Electrical conductivity (1)
- Graphene (1)
- Laser-assisted mass spectrometry (1)
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- Laser-induced breakdown spectroscopy (1)
- Leakage currents (1)
- Magnetic fields (1)
- Nano-stirbars (1)
- Nanorods (1)
- Nanoscale contact (1)
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- Optical emission spectroscopy (1)
- Poole-Frenkel effect (1)
- Reliability (1)
- Surface-enhanced Raman spectroscopy (1)
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Articles 1 - 4 of 4
Full-Text Articles in Nanoscience and Nanotechnology
Nanoscale Contacts Between Semiconducting Nanowires And Metallic Graphenes, Seongmin Kim, David B. Janes, Sung-Yool Choi, Sanghyun Ju
Nanoscale Contacts Between Semiconducting Nanowires And Metallic Graphenes, Seongmin Kim, David B. Janes, Sung-Yool Choi, Sanghyun Ju
Birck and NCN Publications
Metal–semiconductor (M–S) junctions are important components in many semiconductor devices, and there is growing interest in realizing high quality M–S contacts that are optically transparent. In this paper, we present our investigations into the characteristics of M–S junction in a semiconducting ZnO nanowire that was directly grown on a multilayer graphene film (MGF). The synthesized nanowires were fabricated into two-terminal devices with MGF as one contact and Al as the other contact. By comparison with devices employing Al contacts at both ends, the nanowire resistivity and specific contact resistivity of the MGF–nanowire contact can be extracted. The extracted specific contact …
Laser-Based Spectroscopy And Spectrometry, Xiangnan He
Laser-Based Spectroscopy And Spectrometry, Xiangnan He
Department of Electrical and Computer Engineering: Dissertations, Theses, and Student Research
Laser-based spectroscopy and spectrometry were extensively investigated in nanoscience, materials science, biomedical science, and etc. Different lasers with wavelengths from ultraviolet to infrared, and with duration from continuous-wave (CW) to femtoseconds have been employed in various spectroscopic techniques to investigate the properties of materials and nanostructures. However, the sensitivity, spectral resolution, and spatial resolution of these techniques still need to be improved to better serve the purposes of detecting and analyzing various materials. The objective of the research in this dissertation is to improve the sensitivity, spectral resolution, and spatial resolution of different laser-based spectroscopy and spectrometry techniques, such as …
Characterization And Manipulation Of Nanorods Via An Applied Magnetic Field, Summer Wu '13
Characterization And Manipulation Of Nanorods Via An Applied Magnetic Field, Summer Wu '13
Student Publications & Research
A remote system capable of controlling the motion of magnetic nanorods was created. Two different systems, electromagnets and magnetic stirrers, were used to create continuously changing magnetic fields thus applying a constant torque to make nanorods rotate as “nano stirbars”. The system was tested on three different types of synthesized nanorods: multi-segmented Ni/Au, pure Ni, and pure Au nanorods. Ni and Au were chosen due to the combination of the magnetic properties of Ni and the biocompatible properties of Au. Variables such as length, shape, and geometries of the nanorods were characterized by a scanning electron microscope and an atomic …
Theory Of Charging And Charge Transport In “Intermediate” Thickness Dielectrics And Its Implications For Characterization And Reliability, Sambit Palit, Muhammad A. Alam
Theory Of Charging And Charge Transport In “Intermediate” Thickness Dielectrics And Its Implications For Characterization And Reliability, Sambit Palit, Muhammad A. Alam
Birck and NCN Publications
Thin film dielectrics have broad applications, and the performance degradation due to charge trapping in these thin films is an important and pervasive reliability concern. It has been presumed since the 1960s that current transport in intermediate-thickness (IT) oxides (∼10–100 nm) can be described by Frenkel-Poole (FP) conduction (originally developed for ∼mm-thick films) and algorithms based on the FP theory can be used to extract defect energy levels and charging-limited lifetime. In this paper, we review the published results to show that the presumption of FP-dominated current in IT oxides is incorrect, and therefore, the methods to extract trap-depths to …