摘要:
Various embodiments of the present invention are directed to image viewing systems. In one aspect, an image viewing system includes a projection system (104, 504, 604), and a dynamically reconfigurable screen (102, 502, 602). The projection system projects two or more images of perspective views of objects or a scene onto the screen. The screen is dynamically reconfigured to separately reflect each image to an associated viewing zone, enabling a viewer looking at the screen to the view the objects or the scene from different viewing zones
摘要:
An apparatus for surface enhanced Raman spectroscopy includes a substrate, a nanostructure and a plasmonic material. The nanostructure and the plasmonic material are integrated together to provide electronic and plasmonic enhancement to a Raman signal produced by electromagnetic radiation scattering from an analyte.
摘要:
A sensor for surface enhanced Raman spectroscopy (SERS) sensor includes surfaces and an actuator to adjust an intersurface spacing between the surfaces to contain an analyte and allow the analyte to be released from containment.
摘要:
An electrically driven device for surface enhanced Raman spectroscopy includes a first electrode, a substrate positioned proximate to the first electrode, a plurality of cone shaped protrusions formed integrally with or on a substrate surface, a Raman signal-enhancing material coated on each protrusion, and a second electrode positioned relative to the first electrode at a predetermined distance. Each of the protrusions has a tip with a radius of curvature ranging from about 0.1 nm to about 100 nm. The second electrode is positioned relative to the first electrode such that the electrodes together produce an electric field when a voltage bias is applied therebetween. The electric field has a field distribution that creates a stronger field gradient at a region proximate to the tips than at other portions of the substrate.
摘要:
An apparatus for detecting at least one molecule using Raman light detection includes a substrate for supporting a sample containing the at least one molecule, a laser source for emitting a laser beam to cause Raman light emission from the at least one molecule, a modulating element for modulating a spatial relationship between the laser beam and the substrate at an identified frequency to cause the Raman light to be emitted from the at least one molecule at the identified frequency, at least one detector for detecting the Raman light emitted from the at least one molecule, and a post-signal processing unit configured to process the detected Raman light emission at the identified frequency to detect the at least one molecule.
摘要:
This disclosure is directed to image viewing systems. In one aspect, an image viewing system includes a curved screen with a concave viewing surface, and an array of projectors. Each projector is positioned to project a different image onto the viewing surface from a different angle and the viewing surface is to reflect each image to a different viewing area with a horizontal scattering angle that defines the size of each viewing area. A viewer located in at least one viewing area is to receive a reflected image that enters one or both of the viewer's eyes when the viewer looks at the viewing surface.
摘要:
A surface enhanced Raman spectroscopy (SERS) apparatus, system and method employ a plurality of nanorods configured to vibrate. The apparatus includes the nanorods having tips at free ends opposite an end attached to a substrate. The tips are configured to adsorb an analyte and to vibrate at a vibration frequency. The apparatus further includes a vibration source configured to vibrate the free ends of the nanorods at the vibration frequency in a back-and-forth motion. Vibration of the nanorods is configured to facilitate detection of a Raman scattering signal emitted by the analyte adsorbed on the nanorod tips. The system further includes a synchronous detector configured to receive the Raman signal and to be gated cooperatively with the vibration of the nanorods. The method includes inducing a vibration of the nanorods, illuminating the vibrating tips to produce a Raman signal, and detecting the Raman signal using the detector.
摘要:
A scattering spectroscopy nanosensor includes a nanoscale-patterned sensing substrate to produce an optical scattering response signal indicative of a presence of an analyte when interrogated by an optical stimulus. The scattering spectroscopy nanosensor further includes a protective covering to cover and protect the nanoscale-patterned sensing substrate. The protective covering is to be selectably removed by exposure to an optical beam incident on the protective covering. The protective covering is to prevent the analyte from interacting with the nanoscale-patterned sensing substrate prior to being removed.
摘要:
This disclosure is directed to rear projection and front projection image viewing systems. In one aspect, an image viewing system includes a screen composed of a lens and a reflective diffuser with a microstructured surface. The system also includes an array of projectors. Each projector is to project an image onto the screen with a particular angle of incidence such that each image is to pass through the lens and is to be reflected back though the lens by the reflective diffuser with a horizontal scattering angle determined by the microstructured surface. The lens is to direct each reflected image to a particular viewing area so that a viewer located in at least one viewing area receives a reflected image that enters one or both of the viewer's eyes when the viewer looks at the screen.
摘要:
This disclosure is directed to rear projection and front projection image viewing systems. In one aspect, an image viewing system includes a screen composed of a lens and a reflective diffuser with a microstructured surface. The system also includes an array of projectors. Each projector is to project an image onto the screen with a particular angle of incidence such that each image is to pass through the lens and is to be reflected back though the lens by the reflective diffuser with a horizontal scattering angle determined by the microstructured surface. The lens is to direct each reflected image to a particular viewing area so that a viewer located in at least one viewing area receives a reflected image that enters one or both of the viewer's eyes when the viewer looks at the screen.