Abstract:
Methods and apparatus for controlling plasma in a plasma, processing system having at least an inductively coupled plasma (ICP) processing chamber are disclosed. The ICP chamber employs at least a first/center RF coil, a second/edge RF coii disposed concentrically with respect to the firsi/center RF coil, and a RF coil set having at least a third/mid. RF coil disposed concentrically with respect to the first/center RF coil and the second/edge RF coii in a manner such that the third/mid RF coil is disposed in between the first/center RF coil and the second/edge RF coil. During processing, RF currents in the same direction are provided to the first/center RF coil and the second/edge RF coil while RF current in the reverse direction (reiative to the direction of the currents provided to the first/center RF coil and the second'edge RF coil) is provided to the third/mid RF coil.
Abstract:
High aspect ratio features are etched using a plasma etching apparatus that can alternate between accelerating negative ions of reactive species at a low energy and accelerating positive ions of inert gas species at a high energy. The plasma etching apparatus can be divided into at least two regions that separate a plasma-generating space from an ionization space. Negative ions of the reactive species can be generated by electron attachment ionization in the ionization space when a plasma is ignited in the plasma-generating space. Positive ions of the inert gas species can be generated by Penning ionization in the ionization space when the plasma is quenched in the plasma-generating space.
Abstract:
Methods, systems, apparatuses, and computer programs are presented for controlling plasma discharge uniformity using magnetic fields. A substrate processing apparatus includes a vacuum chamber with a processing zone for processing a substrate. The apparatus further includes a magnetic field sensor to detect a first signal representing an axial magnetic field and a second signal representing a radial magnetic field associated with the vacuum chamber. The apparatus includes at least two magnetic field sources to generate an axial supplemental magnetic field and a radial supplemental magnetic field through the processing zone of the vacuum chamber. The apparatus includes a magnetic field controller coupled to the magnetic field sensor and the at least two magnetic field sources. The magnetic field controller adjusts at least one characteristic of one or more of the axial supplemental magnetic field and the radial supplemental magnetic field based on the first signal and the second signal.
Abstract:
An apparatus may be provided that includes a substrate having one or more microfluidic valve structures. The valve structures are non-elastomeric, non-polymeric, non-metallic membrane valves for use in high-vacuum application. Such valves are functional even when the fluid-control side of the valve is exposed to a sub-atmospheric pressure field which may generally act to collapse/seal traditional elastomeric membrane valve.
Abstract:
An apparatus for transporting or storing at least one semiconductor wafer in an ultra-high vacuum is provided. A portable vacuum transfer pod is provided comprising an internal wafer storage chamber for storing one or more wafers and a wafer support for supporting at least one wafer within the internal wafer storage chamber. A passively capable vacuum pump capable of passive vacuum pumping is in fluid connection with the internal wafer storage chamber and is mechanically connected to the portable vacuum transfer pod. A shut off valve for opening and closing the fluid connection is between the passively capable vacuum pump and the internal wafer storage chamber.