Brain-controlled prostheses have the potential to improve the quality of life of a large number of paralyzed persons by allowing them to control prosthetic limbs simply by thought.An essential requirement for natural use of such neural prostheses is that the user should be provided with somatosensory feedback from the artificial limb. This can be achieved by electrically stimulating small populations of neurons in the cortex; a process known as cortical microstimulation. This dissertation describes the development of novel technologies for experimental neuroscience and their use to explore the neural and perceptual effects of cortical microstimulation in rodents.

关键词：假肢；人脑控制；神经假体

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A suspension comprised of angled fibers is proposed as a new means for achieving high strain,high stress, energy dense electrostatic actuators. Angled fiber arrays have low density and canbe placed between the electrodes of a parallel plate or comb-drive type actuator to create a selfcontained actuator sheet with low mass and volume. Angled fibers also have a Poisson’s ratio ofzero, allowing the use of robust, rigid electrodes, and they can be composed of stiff materials withlow viscoelastic properties. This is in contrast to the alternative technology of dielectric elastomers that depend on unreliable compliant electrodes and highly viscoelastic dielectrics. Performancelimits of an ideal nanometer-scale actuator, such as energy density, stress and strain, and efficiencyare considered through theoretical modeling. A micrometer scale prototype is fabricated using a novel fiber peeling technique that easily produces high-aspect-ratio (1.8 μm radius, 66 μm long),angled microfibers. The microfibers are used as a suspension for a parallel plate actuator. Theprototype actuator is characterized through static and dynamic tests, to reveal a maximum static strain of 3.4%at a static stress of 0.8 kPa (electric field of 13.9 V/μm), a fast unloaded step responseof < 2 ms, a Q of 12.9 and a power density of 12.8 W/kg when driving an inertial load in resonanceat 845 Hz.

关键词：纤维；静电制动器

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关键词：探测器；可用性计算机

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本刊以七大战略性新兴产业——节能环保、新一代信息技术、生物、高端装备制造、新能源、新材料、新能源汽车为研究重点，关注国家高层和各部委的动态，剖析国家和地方的新兴产业政策。本刊设有政策导读、领导讲话、七大战略性新兴产业本周国内外行业动态和重点企业新闻、投资专题四大板块，能够实时监测新兴产业和重点企业动态，把握新兴产业发展方向，研究发展重点，寻求发展机遇。

关键词：节能环保；新一代信息技术；生物；高端装备制造；新能源；新材料；新能源汽车

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Over the past few decades, semiconductor lasers have relentlessly followed the path towardsminiaturization. Smaller lasers are more energy effcient, are cheaper to make, and open upnew applications in sensing and displays, among many other things. Yet, up until recently,there was a fundamental problem with making lasers smaller: purely semiconductor lasers couldn't be made smaller than the di raction limit of light.

关键词：半导体激光器；小激光器；高效；便宜

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An advanced energy management and control system in an existing building in the Construction and Engineering Research Laboratory (CERL) for Army at Urbana-Champaign (IL) was demonstrated. The medium-size office building underwent a retrofit of the HVAC system and controls employing a technology called optimal Model Predictive Control (MPC) which offers significant potential for saving energy by providing a means to dynamically optimize various sub-systems to take advantage of building utilization and weather patterns, and utility rate structures. A multi-variable optimization problem to minimize energy consumption and cost while guaranteeing zonal comfort over a 3 hour predictive horizon was formulated and solved periodically on line. The algorithms were integrated with the building automation system and evaluated experimentally at the demonstration site. A 45-50reduction in HVAC system energy use was demonstrated while improving occupant comfort. A 10-15installation cost reduction was accomplished due to the use of a robust wireless sensor network versus a fully wired network.

关键词：建筑节能；算法；控制系统；节能建筑；通信网络

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We present a post-processed 6.25mm2 0.18μm Complementary Metal OxideSemiconductor (CMOS) platform that leverages the advantages of super-paramagneticbead labeling to integrate on-chip the label separation and detection functionalitiesrequired for high sensitivity bio-assays. The surfaces of the CMOS chip and of themagnetic beads are functionalized with bio-chemicals complementary to a target analyte.In a sandwich capture format, the presence of the target analyte will strongly bind 4.5μmmagnetic bead labels to the surface of the chip. The undesired background signal isminimized by the removal of the unbound magnetic beads from the detection array viamagnetic forces generated on-chip. The remaining strongly bound magnetic beads arerespectively magnetized and detected by an array of 128 stacked micro-coil/Hall sensorelements. This single chip solution does not require any external components like pumps,valves or electromagnets and is capable of detecting purified Human antibodies down toconcentrations of 100pg/ml as well as anti-Dengue antibodies in human serum samples.

关键词：互补金属氧化物半导体；CMOS；芯片；单晶片

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关键词：彩电市场；挑战

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SRI International, in collaboration with Professor Jing Shih of the University of California- Riverside (UCR), Professor Nathan Newman of Arizona State University (ASU), and Professor Edmond Nowak of the University of Delaware (UD), has been funded (from June 2009 through September 2012) through ONR Contract (N00014-09-C-0292) to fabricate a magnetic sensor with a half- metallic ferromagnet (FM) contact and polymers and demonstrate its sensing capability. In this study we considered La0.7Sr0..3MnO3 (LSMO) and CoFe50Al25Si25 (CFAS) alloys for half-metallic FM contacts and poly(3,4- ethylenedioxythiophene) (PEDOT) and poly-3(hexylthiophene) (P3HT) for polymers. Room temperature operation of this ultrasensitive device requires half-metallic ferromagnetic contacts with high Curie temperature (Tc), ultra- lowmobilitypolymer with very high doping density, nano-scale trenches, successful charge and spin injection into polymers from FM half-metal contacts, and spin precession in polymers. The FM films for vertical and lateral devices were grown at UCR and ASU, respectively. Most device fabrication was carried out at SRI, while magnetic and noise measurements were performed at ASU and UD.

关键词：光机电；传感器；自旋进动；磁传感

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The Orion Multi-Purpose Crew Vehicle is a new spacecraft being designed by NASA and Lockheed Martin for future crewed exploration missions. The Vision Navigation Sensor is a Flash LIDAR that will be the primary relative navigation sensor for this vehicle. To obtain a better understanding of this sensor's performance, the Orion relative navigation team has performed both flight tests and ground tests. This paper summarizes and compares the performance results from the STS-134 flight test, called the Sensor Test for Orion RelNav Risk Mitigation (STORRM) Development Test Objective, and the ground tests at the Space Operations Simulation Center.

关键词：光机电；传感器；STS-134；空间操作仿真中心

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