摘要:
Holographic storage media including a substrate and a dye material capable of undergoing a photo-induced change are disclosed. Data may be written into the holographic storage media using light of one wavelength and read using light of a different wavelength.
摘要:
A wavelength multiplexed holographic system includes a wavelength tunable blue-violet laser and a controller for wavelength multiplexing. A method of holographic data recording includes providing a holographic medium, providing a tunable blue-violet laser for wavelength multiplexing, and tuning the laser wavelength to record a hologram at a set wavelength and recording holographic data at the set wavelength on the holographic medium. A method for retrieving holographic data includes providing a holographic medium, providing at least one tunable blue-violet laser, tuning the blue-violet laser to a set wavelength, and retrieving holographic data at the set wavelength.
摘要:
The invention provides a system for generating X-rays via the process of inverse Compton scattering. The system includes a high repetition rate laser adapted to direct high-energy optical pulses in a first direction in a laser cavity and a source of pulsed electron beam adapted to direct electron beam in a second direction opposite to the first direction in the laser cavity. The electron beam interacts with photons in the optical pulses in the laser cavity to produce X-rays in the second direction.
摘要:
A technique is provided for using a laser based X-ray source for imaging systems such as computed tomography (CT) system. The laser based X-ray source may be provided as an X-ray bulb that emits X-rays when exposed to a laser beam. The X-ray bulb includes a bulb envelope and a bulb coating disposed on a portion of the bulb envelope, such that it acts as a focusing surface. The X-ray bulb also includes a target rotating about an axis such that a varying portion of the target passes through the focal point of the focusing surface. An X-ray producing plasma is generated when the laser beam is focused on the rotating target via the bulb coating.
摘要:
A system for generating a tunable X-ray pulse comprises a first electron beam source configured to direct a first electron pulse of predetermined energy and pulse length towards a first interaction zone, a laser beam source configured to direct a first photon pulse of predetermined energy and pulse length towards the first interaction zone to interact with the first electron pulse. The first interaction produces a substantially monochromatic second photon pulse of higher photon energy directed towards a second interaction zone, and a second electron beam source configured to direct a second electron pulse of predetermined energy and pulse length towards the second interaction zone so that the second interaction produces an X-ray pulse of predetermined energy and pulse length in a cascaded inverse Compton scattering (ICS) configuration.
摘要:
A data storage device including: a plastic substrate having a plurality of volumes arranged in tracks along a plurality of vertically stacked, laterally extending layers therein; and, a plurality of micro-holograms each contained in a corresponding one of the volumes; herein, the presence or absence of a micro-hologram in each of the volumes is indicative of a corresponding portion of data stored.
摘要:
A method of manufacturing a nanopatterned biopolymer optical device includes providing a biopolymer, processing the biopolymer to yield a biopolymer matrix solution, providing a substrate with a nanopatterned surface, casting the biopolymer matrix solution on the nanopatterned surface of the substrate, and drying the biopolymer matrix solution to form a solidified biopolymer film on the substrate, where the solidified biopolymer film is formed with a surface having a nanopattern thereon. In another embodiment, the method also includes annealing the solidified biopolymer film. A nanopatterned biopolymer optical device includes a solidified biopolymer film with a surface having a nanopattern is also provided.
摘要:
Pathogen and chemical detection systems for use with a patient support apparatus and related methods are disclosed. A fluid or biologic sample from the vicinity of a person supported by a person support apparatus is acquired and transmitted to a pathogen detection sensor. A graphical caregiver interface is supplied output from the pathogen detection sensor and detects the presence of a chemical. The graphical caregiver interface communicates with an electronic medical records database, and alarm and a nurse call system.
摘要:
An internal combustion engine crankcase lubricating oil composition is disclosed. The crankcase lubricating oil composition has a TBN no greater than 6 and contains the following additives: (B1) a metal detergent system having a metal ratio no greater than 3, as the sole detergent system; (B2) an organic ashless friction modifier; (B3) an oil-soluble molybdenum friction modifier; and (B4) a metal dihydrocarbyl dithiophosphate.