Abstract:
L'invention concerne un composant (10) supraconducteur comprenant une première boucle (12) supraconductrice, la première boucle (12) supraconductrice comportant : • une première branche (20) comprenant une première jonction Josephson (32), • une deuxième branche (22). La deuxième branche (22) comprend un premier dispositif supraconducteur à interférence quantique (38) à courant continu.
Abstract:
A testing device (1) and a method for contactless testing of a conductive interconnect (21) on a circuit board (20) is disclosed. A signal generator (9) is configured to generate an input signal (S i ) to be transmitted from a first terminal (6) to a second terminal (7) via a conductive sensing path (5). A processing circuitry (11) is configured to receive an output signal (S o ) at the second terminal (7) and to determine a property of the conductive interconnect (21) based on the output signal (S o ), where the conductive sensing path (5) is parallel displaced relative to the conductive interconnect (21), along a direction perpendicular to a parallel plane to the conductive interconnect (21), and where the conductive sensing path (5) forms a galvanically isolated connection with the conductive interconnect (21).
Abstract:
Multiple planes within the sample are exposed from a single perspective for contact by an electrical probe. The sample can be milled at a non-orthogonal angle to expose different layers as sloped surfaces. The sloped edges of multiple, parallel conductor planes provide access to the multiple levels from above. The planes can be accessed, for example, for contacting with an electrical probe for applying or sensing a voltage. The level of an exposed layer to be contacted can be identified, for example, by counting down the exposed layers from the sample surface, since the non-orthogonal mill makes all layers visible from above. Alternatively, the sample can be milled orthogonally to the surface, and then tilted and/or rotated to provide access to multiple levels of the device. The milling is preferably performed away from the region of interest, to provide electrical access to the region while minimizing damage to the region.
Abstract:
Current Voltage and Capacitance Voltage (IV and CV) measurements are critical in measurement of properties of electronic materials especially semiconductors. A semiconductor, testing device to accomplish IV and CV measurement supports a semiconductor wafer (14) and provides a probe (12) for contacting a surface on the wafer under control of an atomic Force Microscope or similar probing de\ ice for positioning the probe to a desired measurement point on the wafer surface. Detection of contact by the probe on the surface is accomplished and test voltage is supplied to the semiconductor wafer. A first circuit for measuring capacitance (204) sensed by the probe based on the test voltage and a complimentary circuit for measuring Fowler Nordheim current (202) sensed by the probe based on the test voltage are employed with the probe allowing the calculation of characteristics of the semiconductor wafer based on the measured capacitance and Fowler Nordheim current.
Abstract:
A probe apparatus can include a substrate, a contact structure attached to the substrate, and an electronic component electrically connected to the contact structure. The electronic component can be attached to the contact structure.
Abstract:
A method and system for identifying a defect or contamination on a surface of a sample. The system operates by detecting changes in work function across a surface via both vCPD and nvCPD. It utilizes a non-vibrating contact potential difference (nvCPD) sensor for imaging work function variations over an entire sample. The data is differential in that it represents changes in the work function (or geometry or surface voltage) across the surface of a sample. A vCPD probe is used to determine absolute CPD data for specific points on the surface of the sample. The combination of vibrating and non-vibrating CPD measurement modes allows the rapid imaging of whole-sample uniformity, and the ability to detect the absolute work function at one or more points.
Abstract:
A circuit wiring tester for detecting the situation of a circuit wiring with a simple constitution accurately and easily. A testing system 20 fetches image data on all the circuit wirings of a standard circuit pattern before an actual board test to register the data as a standard circuit pattern target data FIG. 14, compares a detection result of an actual test target circuit wiring with the target data by the method of least square S167, judges the condition of the test target circuit wiring by determining their correlation value S168, and displays the comparison result on a display 21a so that the part of difference from the target data as the comparison result may be recognized S169.
Abstract:
A voltage probe including a transmission line having an inner conductor and an outer conductor. An electrode is spaced apart from the outer conductor. A dielectric is disposed between the electrode and the outer cnductor, adjacent an inner surface of the outer conductor. An exemplary method of implementing the voltage probe may include providing the dielectric adjacent the outer conductor. The electrode separated from the outer conductor by the dielectric and positioned adjacent to the dielectric is provided. A signal is measured from the electrode indicating a transmission voltage in the transmission line.
Abstract:
One embodiment of the present invention provides a system for capacitively probing electrical signals within an integrated circuit. This system operates by placing a probe conductor in close proximity to, but not touching, a target conductor within the integrated circuit. In this position, the probe conductor and the target conductor form a capacitor that stores a charge between the probe conductor and the target conductor. Next, the system detects a change in a probe voltage on the probe conductor caused by a change in a target voltage on the target conductor, and then determines a logic value for the target conductor based on the change in the probe voltage. In one embodiment of the present invention, determining the logic value for the target conductor involves, determining a first value if the probe voltage decreases, and determining a second value if the probe voltage increases.