摘要:
A flexible optoelectronic circuit is assembled on and released from a substrate, and therefore independent of a substrate. The substrate includes semiconductor substrates having a release layer. The release layer is etched to release the optoelectronic circuit such that the resulting circuit is flexible. Both optical elements, such as waveguides, and conductive elements are formed in layers, generally between insulating layers. The elements may be formed and patterned using standard semiconductor manufacturing techniques.
摘要:
An electromagnetic emission source identification apparatus is provided, the identification apparatus comprising a sensor device, a data transmitter, and a computer device. The sensor device is configured to sense an electromagnetic emission from a source, wherein the electromagnetic emission is sensed by the sensor device as corresponding sensed emission data. The data transmitter is in communication with the sensor device and is configured to transmit the sensed emission data from the sensor device. The computer device is configured to be in communication with the data transmitter. The computer device is further configured to process digital emission data, the digital emission data corresponding to the sensed emission data, so as to determine an identification indicator, an operational characteristic indicator, and/or an accessory characteristic indicator corresponding to the source. The processed digital emission data for the source is then compared to the corresponding identification indicator, operational characteristic indicator, and/or accessory characteristic indicator of each of a plurality known sources in a database operably engaged with the computer device so as to determine a best-match known source corresponding to the source. Associated methods as well as an associated computer device and computer software program product are also provided.
摘要:
The present invention provides for an improved polarized-light detector device. The device comprises a photodiode having a first contact disposed on the backside of a light-sensing medium and a second contact disposed on the frontside of the light-sensing medium. A spin filter medium is disposed between the backside of the light-sensing medium and the first contact. The application of a magnetic field aligns the magnetic moments in the spin-filter medium to cause the device to discriminate between different polarizations of an optical signal. The polarization discrimination is affected by introducing a net magnetization into the spin filter medium, thereby allowing selected spin-polarized electrons to either be transmitted through the spin filter medium to the point of detection or deflected from further transmission. Additionally, the invention is embodied in a polarization-selective-light detector array and methods for discriminating a polarized optical signal and selective optical wavelength detection.
摘要:
A miniature electrical relay including a piezoelectric actuating element where the piezoelectric actuating element includes a piezoelectric thin-film material sandwiched in between two metal electrode layers that function as piezoelectric electrodes. The metal electrode layers are connected to a positive and negative terminal, respectively, of a power source, which results in actuation of the piezoelectric actuating element. The piezoelectric actuating element is affixed to a deformable metal contact through an insulating layer, such that when actuated, the piezoelectric actuating element selectively deforms the deformable metal contact to cause the contact to move into or out of electrical and mechanical connection with a fixed metal contact. A method of making the miniature piezoelectric includes providing a support structure, depositing a first contact on a first portion of the support structure, depositing a second contact on a second portion of the support structure, wherein the second contact is deformable with respect to the first contact for selectively engaging the first contact, and fabricating a piezoelectric actuator that selectively deforms the second contact relative to the first contact.
摘要:
A fiber optic connector is provided that is capable of precisely aligning an optical fiber with another optical element by using a MEMS positioning apparatus subsystem capable of being manufactured in an affordable, repeatable and reliable manner which can precisely microposition an optical fiber relative to another optical element in each of the X, Y and Z directions.
摘要:
A micro-relay module includes a substrate and a lid in spaced apart relation, and a solder ring which bonds the lid to the substrate to define a chamber therebetween. A micromachined relay is integrally formed on the substrate or on the lid within the chamber. A gas is contained in the chamber at a gas pressure which is above atmospheric pressure. Input/output pads are included outside the chamber and electrically connected to the micromachined relay. Large numbers of encapsulated modules may be fabricated on a single substrate by integrally forming an array of relays on a face of a first substrate. A second substrate is placed adjacent the face with a corresponding array of solder rings therebetween, such that a respective solder ring surrounds a respective relay. The solder rings are reflowed in a gas atmosphere which is above atmospheric pressure to thereby form an array of high pressure gas encapsulating chambers. The first and second substrates are then singulated for form a plurality of individual micro-relay modules.
摘要:
Microelectromechanical actuators include at least one arched beam which extends between spaced apart supports on a microelectronic substrate. The arched beams are arched in a predetermined direction and expand upon application of heat thereto. A coupler mechanically couples the plurality of arched beams between the spaced apart supports. Heat is applied to at least one of the arched beams to cause further arching as a result of thermal expansion thereof, and thereby cause displacement of the coupler along the predetermined direction. Internal heating of the arched beams by passing current through the arched beams may be used. External heating sources may also be used. The coupler may be attached to a capacitor plate to provide capacitive sensors such as flow sensors. The coupler may also be attached to a valve plate to provide microvalves. Compensating arched beams may be used to provide ambient temperature insensitivity.
摘要:
A method for fabricating solder bumps on a microelectronic device having contact pads includes the steps of depositing a titanium barrier layer on the device, forming an under bump metallurgy layer on the titanium barrier layer, and forming one or more solder bumps on the under bump metallurgy layer. The solder bump or bumps define exposed portions of the under bump metallurgy layer which are removed, and then the exposed portion of the titanium barrier layer is removed. The titanium barrier layer protects the underlying microelectronic device from the etchants used to remove the under bump metallurgy layer. The titanium layer also prevents the under bump metallurgy layer from forming a residue on the underlying microelectronic device. Accordingly, the titanium barrier layer allows the under bump metallurgy layer to be quickly removed without leaving residual matter thereby reducing the possibility of electrical shorts between solder bumps.
摘要:
A multichip module having high density optical and electrical interconnections between integrated circuit chips includes a substrate overlaying an array of integrated circuit chips. An optical transmitter generates a first optical beam through the substrate and an optical detector receives a second optical beam through the substrate. A hologram is positioned in the path of at least one of the first and second optical beams. An array of electrical contact pads is located on the substrate corresponding to the array of electrical contact pads on the respective integrated circuit chips. A pattern of electrical interconnection lines is located on the substrate for electrically interconnecting the integrated circuit chips. A solder bump between electrical contact pads on the substrate and on the integrated circuit chips establish electrical connections between the substrate and the integrated circuit chips, and also facilitate alignment of the integrated circuit chips with respect to the substrate. The optical transmitter and detector may be mounted on/in the substrate or on/in the integrated circuit chips. The optical transmitter and detector may also be used to provide optical connections external to the microelectronic module, using a holographic substrate to optically link modules. The substrate may also be used to establish optical alignment of the hologram to an underlying optical emitter and/or optical detector without establishing electrical connections thereto.
摘要:
An electrically and mechanically robust microelectromechanical transducer is formed of a pleated dielectric sheet having patterned electrical conductors on the opposing faces thereof. The pleats define a plurality of spaced apart walls, with each wall including an electrically conductive portion at one side thereof. Positive and negative voltages, applied to opposite faces of the pleated sheet, cause the walls to move towards one another by electrostatic attraction. The walls can also move away from one another by electrostatic repulsion upon application of appropriate voltages. The microelectromechanical transducer may be fabricated by fabricating a sheet with integral pleats or by forming a "self-pleating" flat sheet which forms pleats after conductor fabrication thereon.