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Showing 1 to 20 of 94 for “"vibrational energy"”.
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Vibrational Energy Relaxation in Liquids
This research was supported by U.S. Army Research Office contract DAAH04-96-1-0038 and Air Force Office of Scientific Research contract F49620-97-1-0056. Partial support is acknowledged from National Science Foundation grant DMR-9714843. I wish to also acknowledge support from AASERT fellowships …
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Vibrational energy flow in substituted benzenes
Made available in DSpace on 2014-05-30T16:39:21Z (GMT). No. of bitstreams: 2 Brandt_Pein.pdf: 12807171 bytes, checksum: 7971e5d3c0720847bd4a4a8b6745db92 (MD5) license.txt: 4058 bytes, checksum: 7879642b09f616239fdcff48f73d1180 (MD5)
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Rotational and vibrational energy transfer in methane
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 1988
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A MEMS magnetic-based vibrational energy harvester
… fabrication, and testing of a MEMS vibration energy harvester that is to operate at low frequency to power machine health monitoring. The energy harvester converts external vibration into electricity via the Lorentz-force by allowing a permanent magnet, which acts as an inertial mass, to …
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Micro-Scale and Nonlinear Vibrational Energy Harvesting
This work addresses issues in energy harvesting that have plagued the potential use of harvesting through the piezoelectric effect at the MEMS scale. Effective energy harvesting devices typically consist of a cantilever beam substrate coated with a thin layer of piezoceramic material and fixed with …
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Vibrational energy transfer in condensed high explosives: Nitromethane
Molecular mechanical energy transfer in energetical materials is investigated because of the likely possibility of a relationship between energy transfer rates and impact sensitivities. Picosecond coherent Raman scattering, and anti-Stokes Raman spectroscopy following an ultrafast temperature and …
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Vibrational Energy Exchange in Nitric-Oxide and Carbon-Monoxide Molecules
Made available in DSpace on 2014-12-10T19:07:24Z (GMT). No. of bitstreams: 1 7511695.pdf: 4603486 bytes, checksum: 3c82381c87a1d2b6750542accde3ff7f (MD5) Previous issue date: 1974
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Theories of Translational - Vibrational Energy Transfer and Rotational Spectral Line Broadening
Made available in DSpace on 2014-12-10T23:01:20Z (GMT). No. of bitstreams: 1 7219804.pdf: 3502637 bytes, checksum: 56b94330a5e6c1f036a0f6f7b1e0a0ea (MD5) Previous issue date: 1972
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Dynamics of vibrational energy flow, quantum computing and laser assisted fusion
… main areas: quantum dynamics, intramolecular vibrational energy flow and gas phase vibrational spectroscopy. In the first area, we showed theoretically that the maximum fidelity reachable with vibrational qubits is approximately 0.9999 and 0.99 for one and two qubits gates, using conventional …
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Low-frequency vibrational energy harvesting at the micro and meso scale
Energy harvesting from environmentally available vibrations is a solution to providing electric power for remote and mobile applications, such as the Internet of Things. A buckled beam-based MEMS device can harvest power from low frequency, low amplitude vibrations which has never been achieved by …
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Mechanisms of Intramolecular Vibrational Energy Redistribution and a Method for Coherent Control
Finally, a method for coherent control of reaction dynamics in large molecules is presented, in which IVR is dramatically slowed through the used of laser pulses that are easily produced with available pulse shaping equipment.
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Infrared Laser Excitation and Fluorescence Spectra: A Study of Intramolecular Vibrational Energy Relaxation
… the presence or absence of intramolecular vibrational relaxation (or more precisely state mixing) from an excited C-H stretch in twenty three representative molecules varying in size from methane to norbornene. Included are aliphatic hydrocarbons, aromatic molecules, ethers, and ketones, …
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Electronic structure and electronic-vibrational energy exchange in Rydberg states of calcium monofluoride
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1995.
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Ultra-low and wide bandwidth vibrational energy harvesting using a statically balanced compliant mechanism
… pollution, high maintenance cost, etc. Vibrational energy harvesting is an ideal and green powering solution due to the ubiquitous environmental vibrations and their sufficient power density (~0.3 μW/mm3). A systematic review on state-of-the-art structural methodologies of vibrational …
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Studies in Molecular Collision Dynamics: Tunneling in Chemical Reactions and Vibrational Energy Transfer in Hydrogen-Fluoride Systems
Made available in DSpace on 2014-12-13T20:10:47Z (GMT). No. of bitstreams: 1 8009006.pdf: 3987233 bytes, checksum: e11d66b452a643d2fbf4e5d5296cdd7e (MD5) Previous issue date: 1979
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Development of an inertial generator for embedded applications in rotating environments
… generators are devices that generate electrical energy from their inertial motion, and have only one mechanical connection with their surroundings. This makes them suitable power sources for embedded systems operating in environments that experience some inertial excitation. Typical inertial …
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Chlorine dioxide photochemistry in solution: time-resolved resonance Raman and femtosecond pump-probe studies
… primary photoproduct geminate recombination, vibrational relaxation, and internal conversion is investigated. Following OClO photoexcitation, subpicosecond geminate recombination of the primary ClO and O photofragments resulting in the reformation of ground-state OClO is observed. The quantum …
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The distribution of local enhancement factors in surface enhanced Raman-active substrates and the vibrational dynamics in the liquid phase
… of 790nm laser. On the second project, vibrational dynamics in the liquid phase has been investigated thoroughly with ultrafast time-resolved anti-Stokes Raman spectroscopy. With the only method up-to-date that provides real-time state-resolved measurements of vibrational energy flow in …
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Ultrafast Vibrational Dynamics of Water and Confined Water in Reverse Micelles
A fast vibrational energy transfer across the surfactant layer of AOT reverse micelles has been measured in small AOT reverse micelles (AOT/water/CCl 4). Most of the vibrational energy from nanodroplet water is transferred to the AOT head group and then out to the CCl4 within 10 picoseconds. The …
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The collisional excitation of nitrogen by low energy electrons to the second positive (C3∐u]) transition
… C 3 n 2nd positive state of N ? in the lowest vibrational energy level by bombarding gaseous" nitrogen with electrons in the energy range 80 to 900 eV. When the nitrogen was bombarded by 250 eV electrons the effective cross section was determined to be (1.72 ± - 17 2 .22) x 10 cm , which was …
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