摘要:
A transistor includes a silicon carbide crystal (110) having a silicon terminated face (112). A semiconducting-type graphene layer (120) is bonded to the silicon terminated face (112). A first semimetallic-type graphene layer (122) is contiguous with a first portion of the semiconducting-type graphene layer (120). A second semimetallic-type graphene layer (122) is contiguous with a second portion of the semiconducting-type graphene layer (120) that is spaced apart from the first portion. An insulator layer (132) is disposed on a portion of the semiconducting-type graphene layer (120). A gate conductive layer (134) disposed on the insulator layer (132) and spaced apart from the semiconducting-type graphene layer (120).
摘要:
A containment boom system for remediating an oil spill in a body of water includes a base support structure and two spaced apart containment booms defining a channel therebetween. An elongated rod has a proximal end and a spaced apart distal end. The proximal end is hingedly attached to the base support structure and extends laterally therefrom. A buoy is coupled to the distal end of the elongated rod. The buoy has sufficient buoyancy so as to remain floating on the liquid body while supporting the elongated rod. A reclamation loop is disposed in the water, a first portion of which is disposed in the oil spill and a second portion is disposed in the channel. The reclamation loop is continuously driven through a reclamation station, which removes oil therefrom.
摘要:
A method and a system for the enhancement of the sensitivity in surface plasmon resonance (SPR) sensors based metallic grating by exploiting the conical configuration is presented. We consider the propagation of surface plasmon polaritons (SPPs) excited by light from the visible to infrared spectrum range, incident on a plasmonic grating at different directions by varying both the zenith and azimuthal angles. For specific azimuthal angles, SPPs propagate in the grating plane perpendicular to the incident light momentum. This is the condition that allows increasing the number of different excited SPPs modes largely. We exploit this effect to increase the sensor sensitivity with the change of refractive index of thin film on the plasmonic grating surface. Polarization effects also contribute to a further modes enhancement and increase the sensitivity. A scheme for a lab-on-chip implementation of a system that allows a parallel detection in microfluidic channels has been shown.
摘要:
An angle marking saw guide for marking a plank having a front side that includes a planar marking member including a protractor portion extending upwardly from a flat ruled straight edge portion having a straight edge. A planar reference member includes a rectangular portion a triangular portion extending laterally from the rectangular portion. The triangular portion includes a first angled edge and a second angled edge that meets the first angled edge at a vertex. The marking member is pivotally affixed to the reference member with a fastener disposed adjacent to the vertex. A vertical wall portion depends downwardly from the front edge and engages the front side of the plank so as to maintain the reference member in a fixed angular relationship with the front side. A lip surface extends at an angle from the back edge to facilitate lifting of the reference member from the plank.
摘要:
An athlete training device that includes a platform that includes a plurality of spaced apart attachment members disposed adjacent to the periphery of the platform. A pole extends upwardly from the platform and is affixed to the platform. A weight, defining a hole passing therethrough, is disposed on the platform so that the pole passes through the hole. A top plate is affixed to the top of the pole and includes attachment structures disposed about the top plate. An attachment device is coupled to one of the attachment structures. A redirecting device is coupled to one of the attachment members. An elastic cord is attached to the attachment device and is engaged with the redirecting device so that the cord extends radially away from the pole. An exercise device is affixed to the end of the cord.
摘要:
A fuel cell (100) includes a cation exchange membrane (110), a first anion exchange membrane (120) and a second anion exchange membrane (130). The cation exchange membrane (110) has a first side and an opposite second side. The first anion exchange membrane (120) has a first exterior surface and an opposite first interior surface disposed along at least a portion to the first side of the cation exchange membrane (110). A catalyst (140) is embedded along the first exterior surface. The second anion exchange membrane (130) has a second exterior surface and an opposite second interior surface disposed along at least a portion to the second side of the cation exchange membrane (110). A catalyst (142) is embedded along the second exterior surface. A stack of fuel cells (700) include a first fuel cell (701) with an acidic first anode (714) that is electrically coupled to an alkaline second cathode (722) of a second fuel cell (720).
摘要:
A method of making nanostructures using a self-assembled monolayer of organic spheres is disclosed. The nanostructures include bowl-shaped structures and patterned elongated nanostructures. A bowl-shaped nanostructure with a nanorod grown from a conductive substrate through the bowl-shaped nanostructure may be configured as a field emitter or a vertical field effect transistor. A method of separating nanoparticles of a desired size employs an array of bowl-shaped structures.
摘要:
A breast prosthesis is adapted to massage a patient's chest so as to encourage circulation of interstitial lymph fluid. A breast form member has a front portion that has a shape corresponding to a human breast and a back portion. A protrusion member extends from the back portion. The protrusion member defines at least one protrusion extending outwardly therefrom. The protrusion is disposed so that when the breast prosthesis held against the patient at a preselected location, the protrusion will massage the preselected location, thereby encouraging circulation of interstitial lymph fluid.
摘要:
A circuit for harvesting electrical energy from a piezoelectric source and for storing the electrical energy in a battery includes an inductor that is configured to store electrical energy. A diode bridge-free switching network is configured to: direct electrical energy from the piezoelectric source to the inductor during a first portion of a piezoelectric charge generating cycle; and direct electrical energy from the inductor to the battery during a second portion of the piezoelectric charge generating cycle.
摘要:
In accordance with an embodiment of the invention, there is a force sensor for a probe based instrument. The force sensor can comprise a detection surface and a flexible mechanical structure disposed a first distance above the detection surface so as to form a gap between the flexible mechanical structure and the detection surface, wherein the flexible mechanical structure is configured to deflect upon exposure to an external force, thereby changing the first distance over a selected portion of the gap, the change in distance at the selected portion orienting a probe tip of the force sensor for multi-directional measurement.