Abstract:
A scanning electron microscope is provided for forming an image of a specimen based upon a secondary electron signal corresponding to secondary electrons detected by a secondary electron detecting electrode. The secondary electrons are emitted from the specimen when irradiated with a beam of electrons, and multiplied in a secondary electron multiplication region having a controlled gaseous atmosphere at a predetermined pressure. The scanning electron microscope further includes a multiplication environment detecting section that detects a physical quantity related to a degree of multiplication of the secondary electrons, and a specimen image adjusting section that adjusts an appearance of the formed image of the specimen based upon the physical quantity detected by the multiplication environment detecting section.
Abstract:
The present invention concerns a device for the transfer and in-situ reactions under a controlled atmosphere, of specimens for transmissive electron microscopy, characterized in that it is additionally provided with a means (7) for guiding and locking in transport and analysis positions of the rod (1) provided with the grid holders (2), the said rod (1) being advantageously integrated by screwing with the corresponding end of the traction bar (5) which is guided in the cover (3), of which the opening (9) of the front part (3') of lesser diameter is extended over a portion of the length of this front part (3'), on both sides, by longitudinal grooves (10), the said front part (3') being connected to the rest of the cover (3) by screwing of a shouldered portion (11), a gasket (13') effecting the sealing at the level of the screwed assembly.
Abstract:
Aqueous solutions of olefinically unsaturated hydrophilic monomers are deoxygenated, advantageously pH adjusted, and prepared for direct photopolymerization by photoinitiator addition and countercurrent scrubbing with an inert gas in a contactor column, preferably a packed column.
Abstract:
A deposition apparatus and a method are provided. A method includes placing a substrate over a platform in a chamber of a deposition system. A precursor material is introduced into the chamber. A first gas curtain is generated in front of a first electromagnetic (EM) radiation source coupled to the chamber. A plasma is generated from the precursor material in the chamber, wherein the plasma comprises dissociated components of the precursor material. The plasma is subjected to a first EM radiation from the first EM radiation source. The first EM radiation further dissociates the precursor material. A layer is deposited over the substrate. The layer includes a reaction product of the dissociated components of the precursor material.
Abstract:
The sample holder 30 comprises: a holder body 31 for holding the sample 17; an electrolyte introduction chamber 31b provided with an opening 31c that opens to a measurement region 17a of the sample; a retainer plate 33, which is provided with a through-hole 33a corresponding to the measurement region of the sample, for retaining the sample from the electron source side around the through-hole to sandwich the sample airtightly with the holder body; double sealing members 32 arranged between the surface of the holder body and the sample so as to surround the periphery of the measurement region of the sample; a differential exhaust pipe 35, which opens to a space between the sealing members on the surface of the holder body, for exhaust the space through the opening; and electrodes 19 for electrolysis made up of a bias application electrode 19a and an opposing electrode 36.
Abstract:
A novel sample holder for specimen support devices for insertion in electron microscopes. The novel sample holder of the invention allows for the introduction of gases or liquids to specimens for in situ imaging, as well as electrical contacts for electrochemical or thermal experiments.
Abstract:
An improved system and method of measuring the temperature of a workpiece being processed is disclosed. The temperature measurement system determines a temperature of a workpiece by measuring the amount of expansion in the workpiece due to thermal expansion. The amount of expansion may be measured using a number of different techniques. In certain embodiments, a light source and a light sensor are disposed on opposite sides of the workpiece. The total intensity of the signal received by the light sensor may be indicative of the dimension of the workpiece. In another embodiment, an optical micrometer may be used. In another embodiment, a light sensor may be used in conjunction with a separate device that measures the position of the workpiece.
Abstract:
An apparatus and a method for measuring and monitoring the properties of a fluid, for example, pressure, temperature, and chemical properties, within a sample holder for an electron microscope. The apparatus includes at least one fiber optic sensor used for measuring temperature and/or pressure and/or pH positioned in proximity of the sample.
Abstract:
Techniques for yield management in semiconductor inspection systems are described. According to one aspect of the present invention, an electron beam inspection system includes multiple stages or multiple chambers, where the chambers/stages (N≧2) are organized to form one or more paths for wafer/mask inspection. An inspection procedure in each chamber (or at each stage) is determined by its order in the path and the relative columns used. For a system with N chambers/stages, a maximum number of N wafers/masks can be processed simultaneously.
Abstract:
A system and method for preparing a sample for study in a charged-particle microscope is disclosed. A sample holder comprises substantially parallel opposing faces connected by apertures spanned by a perforated membrane. Blotting material is placed against the outer membrane surface, and liquid films may then be deposited onto the inner membrane surface within each aperture where each aperture can contain a unique sample. Liquids from each sample flow through the perforations in the membrane to be absorbed by the blotting material. After completion of deposition of liquid samples, the sample holder is raised off the blotting material, leaving aqueous samples within the perforations of the membrane. The sample holder may then be immersed in a vitrifying bath of liquid oxygen to form a cryo-sample for microscopic imaging and analysis.