摘要:
A disc-shaped plasma, generated by a ring-shaped cold cathode is used both as an in-situ large area (10-20 cm in diameter) VUV lamp and as a source of ground state and excited atoms. The atoms created in the disc-shaped plasma may be used for initiating sensitized atom-molecule reactions in the volume that dissociate the molecules as well as for providing external energy to heterogenous surface reactions. Multiple grid electrodes are used to extract ions or electrons from the plasma during the deposition process. The disc-shaped plasma is of narrow width which is optically thin for resonance photons emitted in a direction perpendicular to the disc to minimize undesired resonance trapping and associated line reversal. This VUV lamp operates without the need for optical windows; hence, ground state and excited atoms, created in the disc-shaped plasma, can diffuse from the disc-shaped plasma toward the substrate.
摘要:
An open wide area vacuum ultraviolet lamp for use in microelectronics processing applications employes a ring-shaped cold cathode to produce a trapped electron beam discharge of generally disc-shaped cross section in a low pressure molecular gas environment and without the use of VUV windows.
摘要:
A gas ion laser employs a direct current electron beam to create a rare gas ion density and a cylindrical magnetron to sputter a partial pressure of metal vapor density and to also create a rare gas ion density. Thermal energy charge transfer selectively pumps the upper metal ion laser transitions on a continuous wave basis.
摘要:
A cold cathode for generating an abnormal glow discharge electron beam within a vacuum chamber is mounted to a wall of the vacuum chamber such that only the emitting front face of the cold cathode, itself electrically insulated from the vacuum chamber wall by a narrow gap therebetween, is located inside the vacuum chamber, while the remainder of the cold cathode is located outside the vacuum chamber.
摘要:
A system for performing a surgical procedure includes a source of energy, a surgical instrument, and an impedance matching network. The source of energy is an electrosurgical generator or a microwave generator. The surgical instrument is coupled to the source of energy and receives the energy therefrom. The surgical instrument is adapted to treat tissue with the energy. The impedance matching network is interposed along a path of the energy and matches an input impedance of the source of energy to an output impedance (or thereabouts).
摘要:
An Si or SiC semiconductor layer is subjected to anodic oxidation in an HF solution to form a porous semiconductor layer. Without drying, the porous semiconductor layer is then immersed 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 cold cathode glow discharge electron gun operating in the abnormal glow region produces a wide area collimated electron beam employed for flood exposure of thin film materials through electron beam transmission masks, resulting in spatially localized exposure and patterning of the thin film materials.
摘要:
A highly efficient laser employs a glow discharge electron gun and includes a solid wall cathode that emits a beam of electrons resulting in a plasma that is a negative glow discharge having an electron distribution that has a larger number of high energy electrons than would be present in a Maxwellian distribution of the same electron density.
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:
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.