Abstract:
[Problems] To provide a dielectric component which remedies the degradation of amount of electron emission of an electron emitter. [Means to Solve the Problems] Provided is a dielectric composition which, when applied to an electron emitter, enables suppression of reduction of electron emission quantity with passage of time. The dielectric composition contains, as a primary component, a PMN-PZ-PT ternary solid solution composition represented by the following formula PbxBip(Mgy/3Nb2/3)aTib-zMzZrcO3 [wherein x, p, and y satisfy the following relations: 0.85≦x≦1.05, 0.02≦p≦0.1, and 0.8≦y≦1.0; a, b, and c are decimal numbers falling within a region formed by connecting the following five points (0.550, 0.425, 0.025), (0.550, 0.150, 0.300), (0.100, 0.150, 0.750), (0.100, 0.525, 0.375), and (0.375, 0.425, 0.200); z satisfies the following relation: 0.02≦z≦0.10; and M is at least one element selected from among Nb, Ta, Mo, and W], and contains Ni in an amount of 0.05 to 2.0 wt. % as reduced to NiO.
Abstract translation:[问题]提供补偿电子发射体的电子发射量的劣化的电介质成分。 解决问题的手段提供一种电介质组合物,当应用于电子发射体时,可以抑制电子发射量随时间的减少。 电介质组合物含有作为主要成分的由下式表示的PMN-PZ-PT三元固溶体组合物Pb(Mg y / y) 3 Nb 2/3 3)a z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 其中x,p和y满足以下关系:0.85 <= x <= 1.05,0.02 <= p <= 0.1,0.8 <= y <= 1.0; a,b,c是分别连接以下五个点(0.550,0.425,0.025),(0.550,0.150,0.300),(0.100,0.150,0.7050),(0.100,0.525,0.375),(0.100,0.525,0.375), )和(0.375,0.425,0.200); z满足以下关系:0.02 <= z <= 0.10; 并且M是选自Nb,Ta,Mo和W中的至少一种元素,并且含有0.05-2.0重量%的Ni。 %减少到NiO。
Abstract:
An improved device, method, and system efficiently couple high-frequency energy from radiation-assisted field emission. A radiation source radiates an emitting surface with an electromagnetic field. The electromagnetic field reduces the potential barrier at the emitting surface, allowing electrons to tunnel from the surface. The tunneling electrons produce a current. The electron tunneling current oscillates in response to the oscillations of the electromagnetic field radiation. Two or more electromagnetic fields of different frequencies radiate the emitting surface, causing photomixing. The electron tunneling current oscillates in response to the difference of the frequencies of the electromagnetic fields.
Abstract:
Method and apparatus are presented for the generation, regeneration, and transplantation of field enhancing whiskers to provide for an improved cathode in flat panel displays in particular, and in other applications. Such applications comprise devices in which there is an emissive cathode structure for producing electrons. There are dear advantages for the instant invention in the case of a flat panel display which requires a relatively large cathode area, because the present invention avoids excessive power loss due to radiation and conduction loss by permitting operation of the cathode at a significantly lower temperature than if it operated solely as a thermionic emitter. The combination of moderately elevated temperature and enhanced electric field allows the advantages of thermo-field assisted emission.
Abstract:
Method and apparatus are presented for the generation, regeneration, and transplantation of field enhancing whiskers to provide for an improved cathode in flat panel displays in particular, and in other applications. Such applications comprise devices in which there is an emissive cathode structure for producing electrons. There are dear advantages for the instant invention in the case of a flat panel display which requires a relatively large cathode area, because the present invention avoids excessive power loss due to radiation and conduction loss by permitting operation of the cathode at a significantly lower temperature than if it operated solely as a thermionic emitter. The combination of moderately elevated temperature and enhanced electric field allows the advantages of thermo-field assisted emission.
Abstract:
A Schottky emission cathode has a filament, a needle-shaped piece of single crystal refractory metal which is attached to the filament and has a flat crystal surface at a tip thereof, and an adsorbed layer including at least one kind of a metal other than the single crystal refractory metal on the flat crystal surface. The piece of single crystal refractory metal is heated by passing a current through the filament and electrons are extracted by an electric field applied on a tip of the needle-shaped piece of single crystal refractory metal. The tip of the needle-shaped piece of single crystal refractory metal as a radius of curvature of a value to produce an energy width among electrons extracted from the tip not exceeding a predetermined value when the electric field is sufficient to prevent the flat crystal surface from collapsing during operation of the cathode.
Abstract:
A cold cathode field emission device employs photon energy and electric field induced electron emission enhancement to provide subthreshold photoelectric emission; and, alternatively, photon-enhanced cold cathode field emission.
Abstract:
An electron source is made from mixed-metal carbide materials of high refractory nature. Producing field-enhanced thermionic emission, i.e., thermal-field or extended Schottky emission, from these materials entails the use of a certain low work function crystallographic direction, such as, for example, (100), (210), and (310). These materials do not naturally facet because of their refractory nature. The disclosed electron source made from transition metal carbide material is especially useful when installed in a scanning electron microscope (SEM) performing advanced imaging applications that require a high brightness, high beam current source.
Abstract:
Beam processing methods including e-beam welding and e-beam evaporation for thin film deposition are implemented with a novel high power, long focus electron source. The high power, long focus electron source generates an e-beam. The e-beam is transported through a series of steering magnets to steer the beam. At least one refocusing magnet is provided to refocus the e-beam. A final steering magnet bends the e-beam to focus on a target, such as a weld joint or a deposition target.
Abstract:
Beam processing methods including e-beam welding and e-beam evaporation for thin film deposition are implemented with a novel high power, long focus electron source. The high power, long focus electron source generates an e-beam. The e-beam is transported through a series of steering magnets to steer the beam. At least one refocusing magnet is provided to refocus the e-beam. A final steering magnet bends the e-beam to focus on a target, such as a weld joint or a deposition target.
Abstract:
The present invention relates to the use of an electron source in a lithography system for producing a plurality of electron beams directed towards an object to be processed, said electron source comprising a plurality of field emitters, characterized in that said electron source comprises a semiconductor layer with a plurality of tips, said use including the steps of: producing a plurality of light spots on said electron source, producing one light spot on one field emitter; exciting electrons to a conduction band (Ec) by light from a light spot within said field emitter by a photo-electric effect; accelerating said electrons in said conduction band (Ec) towards said tips and tunnelling them outside tips in order to generate electrons for said plurality of electron beams, causing tips to generate electrons for said electron beam having a spot smaller than 100 nm on an object to be processed, each spot of light triggering an electron beam from one tip.