Abstract:
Methods, apparatus, and system, implementing and using techniques for detecting a presence of one or more target analytes in particular regions of interest of one or more samples. One or more samples including objects and one or more target analytes are provided. Some of the target analytes are labeled with a fluorophore and are bound to some of the objects in the samples. The samples are illuminated with fluorescence inducing light and fluorescent light is collected from one or more regions of the one or more samples. At least one anisotropy measurement of the samples is performed to identify regions of interest where one or more target analytes are bound to the objects. The collected fluorescent light from the regions of interest is analyzed to determine a presence of target analytes that are bound to the objects in the one or more samples.
Abstract:
Methods and apparatus are described for detecting specific binding between first and second chemical entities. The first chemical entity in association with a first fluorophore is immobilized. The second chemical entity is allowed to bind with the immobilized first chemical entity. The second chemical entity is or becomes coupled to a second fluorophore, which forms a FRET pair with the first fluorophore. The bound chemical entities are exposed to radiation at an excitation frequency for either the first or the second fluorophore, and polarization anisotropy of a FRET fluorescent signal from the bound chemical entities is measured to detect specific binding between the first and second chemical entities. Techniques are also disclosed for detecting whether a FRET interaction is occurring between a first chemical entity including a donor fluorophore and a second chemical entity including an acceptor fluorophore, using simultaneous anisotropy measurements at the wavelengths of the donor and acceptor fluorophores.
Abstract:
Methods and apparatus for assaying biological materials employ multi-well substrates as described herein. The substrates (102) include a plurality of wells (201) typically each of several nanoliters volume or smaller having consistent dimensions and formed in a rigid substrate (102) s a glass disk. Each well (201) provided with a circumferential lip to minimize crosstalk between wells and/or facilitate optical location of the individual wells during interrogation. Samples are provided to the individual wells and assayed by an optical technique (119) employing fluorescence, polarization, reflectance, or the like. A scanning laser system (111) may be employed for this purpose. The substrate may rotate during the scan to allow consistent interrogation of the wells without stopping and starting the rotation. Multiple rotations may also be employed repeatedly interrogate the samples for use in a kinetic study, for example.
Abstract:
Methods and apparatus for assaying biological materials employ multi-well substrates as described herein. The substrates include a plurality of wells, typically each of several nanoliters volume or smaller having consistent dimensions and formed in a rigid substrate such as a glass disk. Each well may be provided with a circumferential lip to minimize crosstalk between wells and/or facilitate optical location of the individual wells during interrogation. Samples are provided to the individual wells and assayed by an optical technique employing fluorescence, polarization, reflectance, or the like. A scanning laser system may be employed for this purpose. The substrate may rotate during the scan to allow consistent interrogation of the wells without stopping and starting the rotation. Multiple rotations may also be employed repeatedly interrogate the samples for use in a kinetic study, for example.
Abstract:
A processing system includes a plurality of virtual machines which have shared access to a non-volatile solid-state memory (NVSSM) subsystem, by using remote direct memory access (RDMA). The NVSSM subsystem can include flash memory and other types of non-volatile solid-state memory. The processing system uses scatter-gather lists to specify the RDMA read and write operations. Multiple reads or writes can be combined into a single RDMA read or write, respectively, which can then be decomposed and executed as multiple reads or writes, respectively, in the NVSSM subsystem. Memory accesses generated by a single RDMA read or write may be directed to different memory devices in the NVSSM subsystem, which may include different forms of non-volatile solid-state memory.
Abstract:
A processing system includes a plurality of virtual machines which have shared access to a non-volatile solid-state memory (NVSSM) subsystem, by using remote direct memory access (RDMA). The NVSSM subsystem can include flash memory and other types of non-volatile solid-state memory. The processing system uses scatter-gather lists to specify the RDMA read and write operations. Multiple reads or writes can be combined into a single RDMA read or write, respectively, which can then be decomposed and executed as multiple reads or writes, respectively, in the NVSSM subsystem. Memory accesses generated by a single RDMA read or write may be directed to different memory devices in the NVSSM subsystem, which may include different forms of non-volatile solid-state memory.
Abstract:
A hybrid media storage architecture has a log-structured file system configured to control a plurality of different storage media organized as hybrid storage media that cooperate to provide a total storage space of a storage system. The log-structured file system is configured to perform initial placement and migration of data, as well as fine-grain write allocation of the data, among storage space locations of the hybrid storage media to thereby improve the performance characteristics of the media. By defining and implementing heuristics and policies directed to, e.g., types of data, the file system may initially place data on any of the different media and thereafter migrate data between the media at fine granularity and without the need for manual enforcement.
Abstract:
Methods and apparatus for performing scatterometry measurements of biological samples as described herein. A substrate having formed therein one or more sample wells is provided. Each sample well is configured to hold a sample solution containing objects that are to be characterized based on their light scattering properties. One or more sample solutions are dispensed into the sample wells. A specular reflection reducing element is applied to at least some of the sample solutions in the sample wells to reduce a curvature of the meniscus of the sample solution and, therefore, to decrease reflections of light into one or more detectors. A light beam is directed from a light source onto the objects in the sample wells. Light scattered by the objects in the sample wells is collected and transmitted to one or more detectors. The signal from the detectors is analyzed to detect the one or more characteristics of the one or more samples .
Abstract:
Methods, apparatus, and system, implementing and using techniques for detecting a presence of one or more target analytes in particular regions of interest of one or more samples. One or more samples including objects and one or more target analytes are provided. Some of the target analytes are labeled with a fluorophore and are bound to some of the objects in the samples. The samples are illuminated with fluorescence inducing light and fluorescent light is collected from one or more regions of the one or more samples. At least one anisotropy measurement of the samples is performed to identify regions of interest where one or more target analytes are bound to the objects. The collected fluorescent light from the regions of interest is analyzed to determine a presence of target analytes that are bound to the objects in the one or more samples.