摘要:
A method for manufacturing a microstructure, which includes at least one feature having a dimension less than 200 nm, on a work piece. Pulses of UV laser light having a duration of less than about 1 ps and a peak wavelength of less than about 380 nm are generated. These pulses of UV laser light are focused to a substantially diffraction limited beam spot within a target area of the work piece. The fluence of this substantially diffraction limited beam spot in the target area of the work piece is controlled such that the diameter of the section of the target area machined by one of the pulses of UV laser light is less than 200 nm.
摘要:
A near-field scanning optical microscope (NSOM) laser micromachining system for laser machining features on surfaces using an ultrafast laser source and a method of laser machining such features. The system includes: the ultrafast laser source to generate pulses of laser light having pulse durations less than 1 ns and a peak wavelength; an NSOM probe having a substantially cylindrical shape; an NSOM mount to controllably hold the NSOM probe and the microstructure workpiece to be machined; an NSOM probe monitor coupled to the NSOM mount for determining the distance between the probe tip of the NSOM probe and the surface; and an NSOM controller coupled to the NSOM probe monitor, and motion stages in the NSOM mount. The NSOM mount includes an XY motion stage and a Z motion stage. These motion stages are couple to either the NSOM probe or the microstructure workpiece, or one motion stage to each.
摘要:
The invention relates to a device connecting method when implementing dynamic networking in a home network which is used to manage a peer-to-peer device in a network without a resource management device. The device connecting method includes the steps of: sending a device connecting request from a connection initiating device to a connection target device; generating a connection challenge value randomly by the connection target device and sending it to the connection initiating device; generating a connection reply value according to the connection challenge value by the connection initiating device and sending it to the connection target device; sending a connection response message from the connection target device to the connection initiating device according to the connection reply value; and judging a result of connection according to the connection response message, by the connection initiating device, when the connection response message represents successful, establishing a peer-to-peer connection between the connection initiating device and the connection target device. A connection disconnecting method includes the steps of: if one of devices having a peer-to-peer connection relation sends a connection disconnecting message to the other, then the connection being able to be disconnected. The initiating and target devices can be a service providing device and a service utilizing device one another.
摘要:
In a field effect transistor (FET), and a method of fabricating the same, the FET includes a semiconductor substrate, source and drain regions formed on the semiconductor substrate, a plurality of wire channels electrically connecting the source and drain regions, the plurality of wire channels being arranged in two columns and at least two rows, and a gate dielectric layer surrounding each of the plurality of wire channels and a gate electrode surrounding the gate dielectric layer and each of the plurality of wire channels.
摘要:
The invention provides possible methods and facilities of watching movies in common theaters. A watching method includes: installing two projectors, each showing respectively a picture plane of a pair of 3D frames; synchronous manipulation making the two projectors alternate in light transmission and light block one in light transmission another in light block; alternating with each other: synchronous signals sending to liquid crystal polarizing glasses; a liquid crystal light valve and projectors alternating with each other synchronously to make audience see the left picture with left eye and right picture with right eye and form the complete 3D picture. The invention can improve the bright evenness of the pictures, easy to maintain screen and to embrace common and 3D movies only if used in existing film projectors or video projectors. It only needs to press a switching button without changing lens and screens, suitable to remold existing common theaters into embracing common and 3D theaters.
摘要:
A wavelength-selective optical add-drop switch includes a first and a second 1×2 wavelength switch optically coupled to one another via at least one mirror. Each of the first and second 1×2 wavelength switches has a switch input and two switch outputs, a wavelength dispersive medium optically coupled to the switch input and the two switch outputs, a lens optically coupled to the wavelength dispersive medium and a segmented beam steering apparatus optically coupled to the lens opposite to the wavelength dispersive medium. The add-drop wavelength switch has a high extinction ratio and low loss.
摘要:
The present invention relates to a method of surface treatment of metallic materials, more particularly, to a method of the surface self-nanocrystallization of metallic materials by the bombarding of supersonic fine particles. The method comprises the step of bombarding the surface of metallic substrate material with fine particles at supersonic speed of 300-1200 m/s carried by a compressed gas, which is ejected from a nozzle. The present method can be used for the surface self-nanocrystallization of metallic parts with a complicated structure or a large area, and the nanometer layer obtained is homogeneous. In addition, it can be operated in a simple way with low energy consumption, low cost, high efficiency of production and high surface nanocrystallization rate of from 1 cm2 to 10 cm2/min.
摘要:
The invention provides an organic extract of Geum japonicum thunb var. (EGJ), and a pharmaceutical composition comprising the same. The organic EGJ has been identified to show potent dual effects on stimulating early growth (less than 48 hours) of new vessels both in ischemic heart muscles and in infracted heart muscles, and on triggering myocardial regeneration in myocardial infarction, and therefore, may be used in the treatment of ischemic diseases in human being or animals including ischemic heart disease and ischemic limbs, and damaged myocardium associated diseases.
摘要:
A method of laser machining using an ultra-fast pulse laser is presented. According to the present invention a plurality of holes with a pitch less than the wavelength of the laser are drilled into a material sample. Reliable and reproducible hole drilling is accomplished through an exemplary drilling sequence which applies a number of pulses at a first pulse energy to the surface spaced to avoid laser hardening of the surface for adjacent holes of a first set of holes. Next, the number of pulses is increased or the energy of the laser beam is increased to drill holes that are interstitial to the first set of holes. The exemplary laser machining process may used to produce both one-dimensional and two-dimensional photonic crystals, among other applications.
摘要:
A document retrieval system where a user can enter a query, including a natural language query, in a desired one of a plurality of supported languages, and retrieve documents from a database that includes documents in at least one other language of the plurality of supported languages. The user need not have any knowledge of the other languages. Each document in the database is subjected to a set of processing steps to generate a language-independent conceptual representation of the subject content of the document. This is normally done before the query is entered. The query is also subjected to a (possibly different) set of processing steps to generate a language-independent conceptual representation of the subject content of the query. The documents and queries can also be subjected to additional analysis to provide additional term-based representations, such as the extraction of information-rich terms and phrases (such as proper nouns). Documents are matched to queries based on the conceptual-level contents of the document and query, and, optionally, on the basis of the term-based representation. The query's representation is then compared to each document's representation to generate a measure of relevance of the document to the query.