摘要:
Surface plasmon resonance (SPR) sensing technique which provides high specificity and accuracy has been an important method for molecular sensing technology. In the past, in order to affix 45 nm gold film onto glass or silicon substrate, several nanometers of chromium (Cr) or titanium (Ti) has been used as adhesive layer for the attachment of Au film. However, the existence of Cr or Ti thin film deteriorates the performance of SPR sensor due to their characteristic optical absorption. Our experimental results have confirmed the uses of conducting metal oxide, specifically, ITO and Zinc Oxide (ZnO) can be used to replace Cr or Ti for better performance in terms of SPR resonant properties (resonant angle and HMBW) and sensitivity enhancement for 3 to 15 times than traditional ones. It would contribute significantly to the SPR applications in both biosensors and gas sensors.
摘要:
A memory card connector is provided for mounting on a printed circuit board. The connector includes a metal housing having a top wall and a pair of side walls defining a receiving space therebetween for receiving a memory card inserted into the receiving space through an insert opening at a front end of the housing. At least one grounding portion projects outwardly from one of the side walls and includes a base plate for surface connection to a ground pad on the printed circuit board. The grounding portion includes a positioning tab projecting downwardly from the base plate for insertion into a positioning hole in the printed circuit board to properly position the base plate on the ground pad on the circuit board.
摘要:
A memory card connector includes an insulative housing having a rear terminal-mounting section and at least one side wall section extending forwardly from one end of the rear section and defining a card-receiving space therebetween. First and second switch terminals are mounted on the housing and have first and second contact portions, respectively. A third switch terminal is mounted on the housing and has a pair of third contact portions engageable by the first and second contact portions of the first and second switch terminals, respectively, in response to inserting a memory card into the card-receiving space. The third switch terminal includes an elongated base having opposite ends, with at least the opposite ends of the base fixed to the housing. A pair of contact spring arms are cantilevered from the opposite ends of the base, whereby the opposite ends form a pair of fulcrums for flexing of the contact spring arms. Free ends of the arms form the third contact portions of the third switch terminal.
摘要:
An ejection mechanism for an electronic card connector, wherein the electronic card connector includes an insulative housing for receiving an electronic card, and the ejection mechanism includes a slider slidably mounted on an arm portion of the insulative housing, a support portion extending from the arm portion of the insulative housing, a lock arm fixed at one end to the slider, wherein the lock arm includes a retention portion for engaging a corresponding slot of the electronic card during insertion and ejection of the card, and a horizontal portion supported on the support portion, whereby it can securely retain the electronic card during card insertion, yet allow easy removal of the electronic card during ejection.
摘要:
A system and method for measuring wind velocities are provided. A laser wind velocimeter with a radiation source includes a fiber laser. All optical signals, transmitted and received, are conveyed by optical fibers. An amplifier amplifies a source laser, which is then transmitted to one or more transceivers. The one or more transceivers, each projecting along a different axis, and each with a single optical fiber input/output interface act as both the transmission device to focus the radiation at a target region, and as the receiving system for collecting reflected radiation. The one or more transceivers transmit radiation to the target region. A portion of the reflected radiation collected by the receiving system is analyzed to determine the Doppler shift, which can me used to measure wind velocity.
摘要:
This invention provides a high-efficiency light-emitting device and the manufacturing method thereof The high-efficiency light-emitting device includes a substrate; a reflective layer; a bonding layer; a first semiconductor layer; an active layer; and a second semiconductor layer formed on the active layer. The second semiconductor layer includes a first surface having a first lower region and a first higher region.
摘要:
A card eject system is provided for a memory card connector which includes a metal housing defining a receiving space for receiving a memory card inserted into the receiving space in an insertion direction through an insert opening generally at a front end of the housing. An insulating terminal socket is disposed at a rear end of the metal housing opposite the insert opening. A plurality of conductive terminals are mounted in the terminal socket for connection to the memory card. A pair of independently operable card eject mechanisms are disposed generally at opposite ends of the terminal socket for engaging the memory card at two spaced locations transversely of the insertion direction.
摘要:
A memory card connector includes an insulative housing which at least in part defines a card-receiving space for the insertion thereinto of a memory card. A card eject mechanism is mounted on the housing and includes a slide member movable with the memory card in an insertion/ejection direction. The housing has a guide track and the slide member has a track follower to guide and stabilize the movement of the slide member in the insertion/ejection direction.
摘要:
A memory card connector includes a dielectric housing having a terminal-mounting base and a pair of side wall sections extending forwardly from opposite sides of the base. A card locating plate is pivotally mounted at opposite sides thereof to the side wall sections of the housing and combine therewith to define a card-receiving space beneath the plate. Therefore, the pivotal mounting of the plate accommodates the insertion of memory cards of different thicknesses into the card-receiving space.
摘要:
A cleaner and method for removing excess residual cleaning fluid from an object, particularly a semiconductor wafer, before or as the wafer is removed from a cleaning chamber of a CMP cleaner, for example. Typically, a purge bar is mounted on each side of the cleaning chamber for blowing nitrogen or clean, dry air (CDA) against a corresponding surface of the wafer to remove the excess cleaning fluid from the wafer. The purge bars may be connected to a controller for a wafer transfer device which removes the wafer from the cleaning chamber, such that the purge bars are actuated as the wafer transfer device begins to remove the wafer from the chamber.