摘要:
The present disclosure provides for a plasma system including a plasma device coupled to a power source, an ionizable media source and a precursor source. During operation, the ionizable media source provides ionizable media and the precursor ionizable media source provides one or more chemical species, photons at specific wavelengths, as well as containing various reactive functional groups and/or components to treat the workpiece surface by working in concert for synergetic selective tissue effects. The chemical species and the ionizable gas are mixed either upstream or midstream from an ignition point of the plasma device and once mixed, are ignited therein under application of electrical energy from the power source. As a result, a plasma effluent and photon source is formed, which carries the ignited plasma feedstock and resulting mixture of reactive species to a workpiece surface to perform a predetermined reaction.
摘要:
An electrosurgical system and method for performing electrosurgery is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical system includes an electrosurgical instrument, such as an electrosurgical antenna, knife, forceps, suction coagulator, or vessel sealer. The disclosed system includes an impedance sensor, a controller, dynamic impedance matching network, and an electrosurgical energy generator. The dynamic impedance matching network includes a PIN diode switching array configured to selectively activate a plurality of reactive elements. The disclosed arrangement of reactive elements provides real-time impedance correction over a wide range of impedance mismatch conditions.
摘要:
A method for whitening teeth is disclosed. The method includes supplying a liquid sufficient to at least partially submerge a portion of a tooth; positioning a plasma device adjacent to the submerged portion of the tooth; supplying ionizable media to the plasma device; and igniting the ionizable media at the plasma device sufficient to form a plasma effluent in the presence of the liquid at the distal portion, whereby the plasma effluent reacts with the liquid to form at least one reactive species that interacts selectively with foreign matter disposed on the tooth.
摘要:
The present disclosure provides for a plasma system including a plasma device coupled to a power source, an ionizable media source and a precursor source. During operation, the ionizable media source provides ionizable media and the precursor ionizable media source provides one or more chemical species, photons at specific wavelengths, as well as containing various reactive functional groups and/or components to treat the workpiece surface by working in concert for synergetic selective tissue effects. The chemical species and the ionizable gas are mixed either upstream or midstream from an ignition point of the plasma device and once mixed, are ignited therein under application of electrical energy from the power source. As a result, a plasma effluent and photon source is formed, which carries the ignited plasma feedstock and resulting mixture of reactive species to a workpiece surface to perform a predetermined reaction.
摘要:
A cyclical machine for forming at least one glass container each machine cycle comprising a plurality of controllers for controlling regulators and/or profiled motion actuators, at least one displaceable structure, controllers controlling the operation of all the other controllers, each of the controllers including repetitive sequencer and operable in any of a plurality of states, the one controller determines the critical time when each of the states should begin, and instructs each of the other controllers to begin any of the states at the associated determined critical time.
摘要:
An Si or SiC semiconductor layer is subjected to anodic oxidization in an HF solution to form a porous semiconductor layer. Without drying the porous semiconductor layer, it is then dipped in pure water. Ultrasonic waves applied to the pure water shorten the reaction time and help bubbles separate from the surface of the porous region. The porous semiconductor layer is used for forming a pn junction, and carriers are injected into the pn junction.
摘要:
A low-pressure mercury resonance radiation source includes a discharge lamp containing mercury vapor and producing broad band radiation directly emitted from the mercury vapor through excitation of same by electric discharge, and a resonance cell containing mercury vapor and disposed adjacent the discharge lamp for absorbing the broad band radiation and reemitting narrow band mercury resonance radiation. The pressure of the mercury vapor within the resonance cell is controlled to a first predetermined value by controlling the temperature of a first mercury sump arranged within the resonance cell, and the pressure of the mercury vapor within the discharge lamp is controlled to a second predetermined value, preferably by controlling the temperature of a second mercury sump arranged in a side tube communicating with the discharge lamp.
摘要:
Apparatus for generating multiply charged ions from a source of wide area for use in ion implantation is based upon electron beam plasma interactions which more efficiently create a large density of multiply ionized species than conventional plasma sources over a wide area (1-20 cm in diameter). The beam electrons are generated from a glow discharge electron gun operating in the abnormal glow discharge state. More multiply ionized species are created because of the larger number of electrons at high energy present in a beam created discharge as compared to conventional hollow cathode or thermionic cathode ion sources. By using a ring-shaped cold cathode beam electron generator it is possible to realize a wide area source 2-20 cm in diameter. This multiple ion source permits the realization of a fixed ion implantation energy using a lower electrostatic potential because multiply ionized species are accelerated rather than singly ionized species.
摘要:
A process for fabricating a bipolar transistor with a thin base and an abrupt base-collector junction includes the steps of depositing a thin layer of polycrystalline or amorphous silicon base material in a single crystal collector region, while in-situ doping the deposited silicon with boron atoms, and thereafter, recrystallizing the deposited silicon layer by thermal-pulse annealing at a temperature high enough to effect recrystallization and solid phase epitaxial regrowth while low enough to minimize interdiffusion of dopants between the base and collector.The process further includes providing the transistor fabricated by the aforedescribed steps with an abrupt base-emitter junction. This is accomplished by depositing n.sup.++ doped polysilicon with a LPCVD process and thereafter thermal annealing the polysilicon.
摘要:
Applicants have invented a new low temperature method (50.degree. C. to 500.degree. C.) to deposit and grow microelectronic thin films using cold cathode electron beams to initiate and sustain both gas phase and surface chemical reactions. The new method uses electron beams generated by glow discharge electron guns. Secondary electrons are emitted from these electron guns following ion and fast neutral bombardment upon cathode surfaces and secondary electrons so formed are accelerated in the cathode sheath.Our method uses the plasma generated electron beams to decompose reactant molecules directly by electron impact and indirectly by the vacuum ultraviolet radiation generated following rare gas electron collisions in the beam region. The reactant molecules can be in the gas phase or adsorbed on substrate surfaces. The electron beams are spatially confined and excite only a localized region above the substrate so that direct plasma bombardment of the substrate is avoided. The film growth and deposition reactions take place on a heated (50.degree. C.-500.degree. C.) substrate therefore with reduced radiation damage at high deposition and growth rates required for in line single wafer processing (>1000.ANG./min). Microelectronic films such as insulators, conductors and semiconductors can be deposited and native films such as oxides and nitrides can be grown with the use of electron beam assisted decomposition of gas molecule reactants.