Abstract:
An apparatus includes a thermoelectric cooler having a first set of one or more metal electrodes, a second set of one or more metal electrodes, and one or more doped semiconductor members. Each member physically joins a corresponding one electrode of the first set to a corresponding one electrode of the second set. Each member has a cross-sectional area that increases along a path from the one metal electrode of the first set to the one metal electrode of the second set.
Abstract:
The present invention may include loading a diagnostic sample onto a sample stage, focusing light from an illumination source disposed on a multi-axis stage onto the diagnostic sample, collecting a portion of light reflected from a surface of the diagnostic sample utilizing a detector, wherein the illumination source and the detector are optically direct-coupled via an optical system, acquiring a set of diagnostic parameters indicative of illumination source position drift from the diagnostic sample, determining a magnitude of the illumination source position drift by comparing the acquired set of diagnostic parameters to an initial set of parameters obtained from the diagnostic sample at a previously measured alignment condition, determining a direction of the illumination source position drift; and providing illumination source position adjustment parameters configured to correct the determined magnitude and direction of the illumination source position drift to the multi-axis actuation control system of the multi-axis stage.
Abstract:
The present invention may include loading a diagnostic sample onto a sample stage, focusing light from an illumination source disposed on a multi-axis stage onto the diagnostic sample, collecting a portion of light reflected from a surface of the diagnostic sample utilizing a detector, wherein the illumination source and the detector are optically direct-coupled via an optical system, acquiring a set of diagnostic parameters indicative of illumination source position drift from the diagnostic sample, determining a magnitude of the illumination source position drift by comparing the acquired set of diagnostic parameters to an initial set of parameters obtained from the diagnostic sample at a previously measured alignment condition, determining a direction of the illumination source position drift; and providing illumination source position adjustment parameters configured to correct the determined magnitude and direction of the illumination source position drift to the multi-axis actuation control system of the multi-axis stage.
Abstract:
Methods and apparatus for measuring an optical azimuth angle φO of a substrate relative to a plane of detection in scatterometry tools are disclosed. A grating target on a stage of a scatterometry tool may be illuminated and positions of the resulting diffraction orders may be observed. The optical azimuth angle may be determined from the positions of the diffraction orders. Alternatively, polarization-dependent signals of radiation scattered from a line grating may be measured for equal and opposite polarization angles +A and −A. A combination signal may be computed from the polarization-dependent signals obtained at +A and −A and a property of the combination signal may be calculated for several mechanical Azimuth angles φM. A relationship between the optical azimuth angle φO and the mechanical azimuth angle φM may be determined from a behavior of the property as a function of mechanical azimuth angle φM.
Abstract:
A method of measuring a porosity of a film, by measuring a refractive index of the film in a first environment having a first relative humidity to produce a first refractive index measurement. The refractive index of the film is measured in a second environment having a second relative humidity, where the first relative humidity is different from the second relative humidity, to produce a second refractive index measurement. Multiple gases can be used to create the first and second environments. The first refractive index measurement and the second refractive index measurement are input into a model that correlates refractive index to film porosity, to output the porosity of the film.
Abstract:
An illumination subsystem configured to provide illumination for a measurement system includes first and second light sources configured to generate light for measurements in different wavelength regimes. The illumination subsystem also includes a TIR prism configured to be moved into and out of an optical path from the first and second light sources to the measurement system. If the TIR prism is positioned out of the optical path, light from only the first light source is directed along the optical path. If the TIR prism is positioned in the optical path, light from only the second light source is directed along the optical path. Various measurement systems are also provided. One measurement system includes an optical subsystem configured to perform measurements of a specimen using light in different wavelength regimes directed along a common optical path. The different wavelength regimes include vacuum ultraviolet, ultraviolet, visible, and near infrared wavelength regimes.
Abstract:
A method for registering multiple 3D point sets by determining optimal relative positions and orientations of the 3D point sets. Initial values are determined for the rotation matrices corresponding to the relative orientations of reference frames of the 3D point sets. A registration error cost function is optimized on a product manifold of all of the rotation matrices to determine optimal values of the rotation matrices. The optimal values of the rotation matrices are used to determine optimal values for translation vectors corresponding to the relative positions of the reference frames of the 3D point sets. The 3D point sets are registered on a common reference frame using the optimal rotation matrices and the optimal translation vectors.
Abstract:
A method and apparatus for providing facility location plans for a network are disclosed. For example, the method identifies a facility and a number of nearest active clients associated with a minimized cost per unit demand of connecting these clients to this facility. The method then connects the number of nearest active clients to the facility associated with the minimized cost per unit demand. In one embodiment, the method iterates this process with the remaining clients until all demands have been assigned to facilities.
Abstract:
A heat sink includes a base and a heat exchange element monolithically connected to the base. The heat exchange element has a surface that at least partially bounds first and second paths through the heat exchange element. The surface forms an upper boundary of the first and second paths and includes an opening therethrough connecting the first and second paths.
Abstract:
An apparatus 100 comprising a first substrate 130 having a first surface 125, a second substrate 132 having a second surface 127 facing the first surface and an array 170 of metallic raised features 170 being located on the first surface, each raised feature being in contact with the first surface to the second surface, a portion of the raised features being deformed via a compressive force 305.