64 results about "Particle trajectory" patented technology

A stochastic method and system for detecting polygon structures in images, by detecting a set of best matching corners of predetermined acuteness α of a polygon model from a set of similarity scores based on GDM features of corners, and tracking polygon boundaries as particle tracks using a sequential Monte Carlo approach. The tracking involves initializing polygon boundary tracking by selecting pairs of corners from the set of best matching corners to define a first side of a corresponding polygon boundary; tracking all intermediate sides of the polygon boundaries using a particle filter, and terminating polygon boundary tracking by determining the last side of the tracked polygon boundaries to close the polygon boundaries. The particle tracks are then blended to determine polygon matches, which may be made available, such as to a user, for ranking and inspection.

A flow cytometer subsystems monitors a particle sensing zone within a fluid transport chamber for the presence of a particle (e.g., blood cell) traveling therethrough, and produces an output pulse, whose width is representative of the trajectory and thereby the length of time that the particle is within the particle sensing zone as it travels through the fluid transport chamber. This output pulse is then processed in accordance with geometry parameters of successive time delay zones of the particle fluid transport chamber through which the particle passes, in order to derive a composite time delay between the sensing of the particle to the time at which a fluid droplet containing the particle will break off from the carrier fluid. The composite time delay is employed to accurately establish the time at which the particle is controllably charged as the particle breaks off from the carrier fluid.

The present invention relates to a pixel detector (10), comprising a semiconductor sensor layer (12), in which charges can be generated upon interaction with particles to be detected. The semiconductor layer defines an X-Y-plane and has a thickness extending in Z-direction. The detector further comprises a read-out electronics layer (14) connected to said semiconductor layer (12), said read-out electronics layer (14) comprising an array of read-out circuits (20) for detecting signals indicative of charges generated in a corresponding volume of said semiconductor sensor layer (12). The neighboring read-out circuits (20) are connected by a relative timing circuit configured to determine time difference information between signals detected at said neighboring read-out circuits (20). The time difference information is indicative of a difference in the Z-components of the locations of charge generations in the corresponding neighboring sensor volumes caused by a particle trajectory that is inclined with respect to the X-Y-plane.

A beam-limiting aperture truncates selected portions of a charged particle beam illuminating portions such as subfields of a patterned reticle of a charged particle beam projection lithography tool and then projects a pattern of charged particles onto a target in a charged particle beam lithography tool. The respective portions of the reticle are patterned in accordance with respective portions of an integrated circuit or other desired pattern and may have differing transmissivities; altering beam current at the target even when source beam current remains substantially constant. The portion of the beam which is truncated, thus altering the particle trajectory semi-angle and numerical aperture of the tool is controlled in accordance with the transmissivity of the reticle portion to enhance resolution to near optimal limits.

A method of sorting particulate matter comprises creating an unconstrained monolayer feed stream of particulate matter moving with an initial first trajectory in a gaseous medium, and subjecting the monolayer feed stream while in the gaseous medium to a magnetic field of sufficient strength to influence the trajectory of at least some particles in the feed stream to cause a spread of particle trajectories from the first trajectory. The particles are subsequently sorted and / or collected on the basis of their trajectories.

Provided herein are approaches for controlling particle trajectory from a beam-line electrostatic element. In an exemplary approach, a beam-line electrostatic element is disposed along a beam-line of an electrostatic filter (EF), and a voltage is supplied to the beam-line electrostatic element to generate an electrostatic field surrounding the beam-line electrostatic element, agitating a layer of contamination particles formed on the beam-line electrostatic element. A trajectory of a set of particles from the layer of contamination particles is then modified to direct the set of particles to a desired location within the EF. In one approach, the trajectory is controlled by providing an additional electrode adjacent the beam-line electrostatic element, and supplying a voltage to the additional electrode to control a local electrostatic field in proximity to the beam-line electrostatic element. In another approach, the trajectory is influenced by one or more geometric features of the beam-line electrostatic element.

Ions and charged droplets move from the nozzle (6) towards the orifice (22) of a charged-particle transport device or the desolvation pipe (7). This particle motion is governed by the distribution of the pseudo-potential along particle trajectories. There are RF-voltages applied to neighboring electrodes (241-246) of the electrode array (24) cause the charged particles to substantially hover above the electrode array (24). Right before the ions come to the electrode array (24) they thus experience a repelling force “F” perpendicular to the surface of the electrode array (24). This force “F” causes an effective barrier (B) right before the electrode array (24) and consequently a pseudo-potential well (A) where the charged particles stop their motion parallel to the plume axis (D). Thus they accumulate around the center line (C) of this well (A). Applying additionally to the RF-potentials also DC-potentials to neighboring electrodes within the electrode array (24) small DC-fields can be formed within the well area (23). These additional DC-fields drive the charged particles towards the axis of symmetry (C) and thus towards the orifice (22) of a charged-particle transport device or the desolvation pipe (7). Thus, many of the charged particles which would normally impinge on the wall (21) around the orifice (22) can now be analyzed.

Curved, flexible arrays of radiation detectors are formed by using standard silicon semiconductor processing materials and techniques and additional functionalization through integration of conversion and shielding materials. The resulting flexible arrays can be handled, integrated, further functionalized and deployed for a wide variety of applications where conventional sensors do not provide the desired functionality, form factors and / or reliability. The arrays can be stacked and include multiple types and thicknesses of conversion layers, enabling the detector to simultaneously detect multiple radiation types, and perform complex, simultaneous functions such as energy discrimination, spectroscopy, directionality detection, and particle trajectory tracking of incident radiation.

A system and method of analyzing paint spray particle trajectory on a vehicle with a computer aided design (CAD) model representative of the vehicle. The method includes the steps of preparing a CAD model of a desired portion of the vehicle and placing a paint spray gun at a desired location with respect to the desired portion of the vehicle. The method also includes the steps of specifying a set of particle information describing particles to be sprayed from the paint spray gun and computing a trajectory for a particle stream emanating from the paint spray gun. The method further includes the steps of displaying the trajectory relative to the desired portion of the vehicle on a display to permit visual observation thereof and relocating the paint spray gun if necessary to achieve a desired trajectory.