摘要:
The electrostrictive actuator device of the present invention, which controls relative movement in a scanned-probe microscope between the tip of a probe and the surface of a sample, comprises two thin-walled cylindrical members formed of electrostrictive material. The first cylindrical member, which is connected to the microscope, has on each of its inner and outer surfaces a conductive layer that forms at least one electrode. Applying voltages to the electrodes on the inner and outer surfaces of the first cylindrical member controls the two-dimensional X-Y horizontal relative movement between the probe tip and the sample surface. The second cylindrical member of the actuator device is coaxially connected at one end with the first cylindrical member and at its opposite end with the sample or the probe. Both the inner and outer surfaces of the second member have conductive layers, each of which forms an electrode. Applying voltages to the electrodes on the inner and outer surfaces of the second cylindrical member controls the Z-direction vertical relative movement of the probe tip on or near the sample surface. In preferred embodiments of the actuator device of the invention, either or both of the conductive layers on the inner and outer surfaces of the first cylindrical member may comprise two opposite pairs of spaced apart electrodes. Also in accordance with the invention, a scanned-probe microscope apparatus comprises a microscope and the just-described electrostrictive actuator device comprising first and second cylindrical members for controlling, respectively, X-Y horizontal and Z-direction vertical movements.
摘要:
A reference microplate is described herein which can be used to help calibrate and troubleshoot an optical interrogation system. In one embodiment, the reference microplate has a frame with an array of wells each of which contains an optical biosensor and each optical biosensor is at least partially coated with a substance (e.g., elastomer, optical epoxy). In another embodiment, the reference microplate in addition to having its optical biosensors at least partially covered with a substance (e.g., elastomer, optical epoxy) also has a controllable heating device attached thereto which is used to heat the optical biosensors.
摘要:
Water vapor enhanced focused particle beam machining speeds up the removal of polymer-based dielectric materials from areas surrounding metallic interconnects on integrated circuits while at the same time decreasing the rate of removal of aluminum. Selective material removal protects metal interconnects from machining damage and greatly reduces the time that protective material is exposed to the particle beam.
摘要:
A screening device and a method are described herein which can automatically handle and measure (interrogate) a plurality of sensor carriers (i.e., multiwell plates, microplates) with multi-dimensionally arranged, temperature-compensated or temperature-compensatable optical sensors, while maintaining a substantially constant temperature gradient for a relatively long period of time around the optical sensors where temperature compensation has been performed on the sensor carriers.
摘要:
A screening system and method are described herein which provide a unique and practical solution for enabling label-free high throughput screening (HTS) to aid in the discovery of new drugs. In one embodiment, the screening system enables direct binding assays to be performed in which a biomolecular interaction of a chemical compound (drug candidate) with a biomolecule (therapeutic target) can be detected using assay volumes and concentrations that are compatible with the current practices of HTS in the pharmaceutical industry. The screening system also enables the detection of bio-chemical interactions that occur in the wells of a microplate which incorporates biosensors and surface chemistry to immobilize the therapeutic target at the surface of the biosensors. The screening system also includes fluid handling and plate handling devices to help perform automated HTS assays.
摘要:
Water vapor enhanced focused particle beam machining speeds up the removal of polymer-based dielectric materials from areas surrounding metallic interconnects on integrated circuits while at the same time decreasing the rate of removal of aluminum. Selective material removal protects metal interconnects from machining damage and greatly reduces the time that protective material is exposed to the particle beam.
摘要:
A support device for a scanned-probe microscope comprises a horizontal base member and a vertical bridge member that are transverse to one another. The horizontal and vertical members are connected at their respective opposite ends by a common chord member extending between the ends. The device preferably includes means for attaching a scanned-probe microscope to a forward surface of the vertical bridge member. The support device preferably further includes one or more bracket members, each attached at one end to the rearward surface of the vertical bridge member and at the opposite end to a rearward surface of the chord member. Each bracket includes a section extending away from the chord member. The horizontal base member and the chord member each has an upper surface substantially coplanar with one another. The substantially coplanar upper surfaces together provide support for a readily separable sample plate. Further in accordance with the invention, a microscope stage assembly comprises the described support device and a readily separable sample plate.
摘要:
A screening system and method are described herein which provide a unique and practical solution for enabling label-free high throughput screening (HTS) to aid in the discovery of new drugs. In one embodiment, the screening system enables direct binding assays to be performed in which a biomolecular interaction of a chemical compound (drug candidate) with a biomolecule (therapeutic target) can be detected using assay volumes and concentrations that are compatible with the current practices of HTS in the pharmaceutical industry. The screening system also enables the detection of bio-chemical interactions that occur in the wells of a microplate which incorporates biosensors and surface chemistry to immobilize the therapeutic target at the surface of the biosensors. The screening system also includes fluid handling and plate handling devices to help perform automated HTS assays.
摘要:
A reference microplate is described herein which can be used to help calibrate and troubleshoot an optical interrogation system. In one embodiment, the reference microplate has a frame with an array of wells each of which contains an optical biosensor and each optical biosensor is at least partially coated with a substance (e.g., elastomer, optical epoxy). In another embodiment, the reference microplate in addition to having its optical biosensors at least partially covered with a substance (e.g., elastomer, optical epoxy) also has a controllable heating device attached thereto which is used to heat the optical biosensors.
摘要:
An optical interrogation system and method are described herein that are capable of detecting and correcting a positional misalignment of a label independent detection (LID) microplate so that the LID microplate can be properly interrogated after being removed from and then re-inserted back into a microplate holder/XY translation stage.