摘要:
Provided is a method and system for detecting rotational movement of a camera. Three pairs of accelerometers are located in the camera, with the motion sensing axes of each of the accelerometers in each of the pairs parallel to one another. The accelerometers are relatively positioned in the camera such that the planes formed by the motion sensing axes of each of the pairs of accelerometers are substantially mutually orthogonal.
摘要:
An electron emitter that includes a metal film having a set of layers that are selected and arranged to adhere the metal film to a remainder of a structure of the electron emitter while avoiding electron loss in the metal film. A multiple layer metal film according to the present techniques enables a balance among adhesion properties, metal diffusion, and oxide properties that might otherwise hinder the performance of an electron emitter.
摘要:
A method is presented for forming pores within a central area of a semi-conductive or conductive surface. The method includes forming a semi-conductive or conductive surface on a substrate. This semi-conductive or conductive surface is formed in a manner ensuring that upon application of an electric field at the semi-conductive or conductive surface an intensity of the electric field at a central area of the surface is at least as great as an intensity of the electric field at a perimeter of the surface. Finally, the method includes anodizing the semi-conductive or conductive surface by generating the electric field at the semi-conductive or conductive surface to form a porous region within the semi-conductive or conductive surface.
摘要:
A field emission device, which among other things may be used within an ultra-high density storage system, is disclosed. The emitter device includes an emitter electrode, an extractor electrode, and a solid-state field controlled emitter that utilizes a Schottky metal-semiconductor junction or barrier. The Schottky metal-semiconductor barrier is formed on the emitter electrode and electrically couples with the extractor electrode such that when an electric potential is placed between the emitter electrode and the extractor electrode, a field emission of electrons is generated from an exposed surface of the semiconductor layer. Further, the Schottky metal may be selected from typical conducting layers such as platinum, gold, silver, or a conductive semiconductor layer that is able to provide a high electron pool at the barrier. The semiconductor layer placed on the Schottky metal is typically very weakly conductive of n-type and has a wide band gap in order to create conditions conducive to creating induced negative electron affinity at applied fields necessary to provide electron emission. One type of wide band-gap material can be selected from titanium dioxide or titanium nitride or other comparable materials.
摘要:
An electron source includes a planar emission region for generating an electron emission, and a focusing structure for focusing the electron emission into an electron beam.
摘要:
Provided is a focus device for a camera. The focus device moves an image sensor toward, or away from, the incoming light of an image according to commands received from a processor/controller. The focus device includes an actuator for inducing movement of the image sensor, and a position sensor for measuring the distance moved. In one embodiment, the actuator is a voice coil actuator comprising a plurality of magnets and a coil winding. In an alternate embodiment, the actuator is a piezo-bimorph actuator of a type well known in the art. Operation of the actuator is controlled by the processor/controller. Further, the resulting measurement data from the position sensor is used by one or more focusing algorithms in the camera to focus the image.
摘要:
Apparatus, printers, and methods to remove material from a printer surface are disclosed. An example apparatus includes a fluid remover to remove printing material from a printer surface, and a coating material reservoir to store coating material and to apply the coating material to the fluid remover to reduce an amount of printing material transferred to the fluid remover from the printer surface.
摘要:
A printing system (30, 40, 40′, 50, 50′) includes at least one ejector coupled to a reservoir (38) that is configured to contain a printing composition including a hydrocarbon having at least one unsaturated bond. The hydrocarbon is configured to at least one of polymerize or crosslink in the presence of a reactive species. The at least one ejector is configured to eject the printing composition onto a surface (34, 36, 10). The system (30, 40, 40′, 50, 50′) further includes a corona generator (32, 32′, 32″, 32′″) configured to generate the reactive species in situ. The corona generator (32, 32′, 32″, 32′″) is positioned with respect to the reservoir (38) such that the reactive species is exposed to the printing composition after the printing composition has been ejected onto the surface (34, 36, 10). The polymerizing and/or the cross-linking of the hydrocarbon is configured to form a polymer matrix (12) from the ejected printing composition.
摘要:
With a card including a passive electronic paper display configured to display a visual image, a method of presenting information on a card includes selectively changing a visual image displayed on the passive electronic paper display to update information represented by the visual image, and wherein the card is sized to be carried by a user.
摘要:
Printers, methods, and apparatus to reduce aerosol are disclosed. An example apparatus to reduce aerosol includes a print head (102) to generate droplets (314-320) and aerosol (322-326), and to direct the droplets (314-320) toward a print substrate (104), a first corona wire (108) to generate first ions (340, 344) having a first electrical polarity to direct the aerosol (322-326) toward the print substrate (104), and a second corona wire (110) to generate second ions (340, 344) to direct the aerosol (322-326) toward the print substrate (104), wherein the second ions (340, 344) have a second electrical polarity that is opposite the first electrical polarity.