摘要:
Apparatus and techniques for extracting information carried in higher eigenmodes or harmonics of an oscillating cantilever or other oscillating sensors in atomic force microscopy and related MEMs work are described. Similar apparatus and techniques for extracting information from piezoelectric, polymer and other materials using contact resonance with multiple excitation signals are also described.
摘要:
The arrangement for calibrating probes comprises a source (10) of coherent photon radiation and at least one optically based strain sensor (12a) for measuring an amount of strain (ε). The at least one optically based strain sensor is optically coupled to said source of coherent photon radiation. The arrangement further comprises at least one calibration lever (14) having a surface for placement of a tip (21) of a probe (2) to be calibrated, and that is mechanically coupled to the at least one optically based strain sensor for converting a force (F) exerted by said tip at said surface into an amount of strain in the optically based strain sensor. The arrangement further comprises at least one probe holder (24) for holding the probe (2) to be calibrated, the at least one probe holder having a controllable position in at least a direction (y) transverse to the surface of the calibration lever (14). The arrangement further comprises a calibration control facility (46) for controlling said controllable position within a range of position values, and for determining a mechanical property of said probe from the measured amount of strain (ε) and a deflection (δC) of the tip (21) of the probe relative to the probe holder as a function of said position.The arrangement may be used as a stand-alone device or may be integrated in a device, such as an AFM-device. The arrangement may also be carried out as a batch-calibration device.
摘要:
An automated testing system includes systems and methods to facilitate inline production testing of samples at a micro (multiple microns) or less scale with a mechanical testing instrument. In an example, the system includes a probe changing assembly for coupling and decoupling a probe of the instrument. The probe changing assembly includes a probe change unit configured to grasp one of a plurality of probes in a probe magazine and couple one of the probes with an instrument probe receptacle. An actuator is coupled with the probe change unit, and the actuator is configured to move and align the probe change unit with the probe magazine and the instrument probe receptacle. In another example, the automated testing system includes a multiple degree of freedom stage for aligning a sample testing location with the instrument. The stage includes a sample stage and a stage actuator assembly including translational and rotational actuators.
摘要:
A structure for the characterization of a tip of an atomic force microscope, the structure being produced on a substrate and including a first support element located above the substrate; a first characterization element with a constant thickness, the first characterization element being located above the first support element and having an upper flat surface and a lower flat surface covering the upper surface of the first support element with two zones extending beyond the upper surface of the first support element, each zone having a characterization surface at one end which is capable of coming into contact with a tip to be characterized, the upper surface and the lower surface of said first characterization element being parallel to the upper surface of the substrate.
摘要:
A method for characterizing an atomic force microscopy tip using a characterization structure having two inclined sidewalls opposite one another and of which at least one actual lateral distance separating the two inclined sidewalls corresponding to a given height is known, the method including scanning the surfaces of the inclined sidewalls by the tip, the scanning being carried out while the tip oscillates solely vertically; measuring, for the given height, the lateral distance separating the two inclined sidewalls, the measurement incorporating the convolution of the shape of the tip with the shape of the characterization structure; and determining a characteristic dimension of the tip as a function of the measured lateral distance, and of the actual lateral distance.
摘要:
Scanning probe microscope (SPM) images are enhanced by enforcing one or more symmetries that can be selected based on suitable Fourier coefficient amplitude or phase angle residuals, and/or geometric Akaike information criteria, and/or cross correlation techniques. Alternatively, this selection can be based on prior knowledge of specimen characteristics. In addition, a scanning microscope point spread function is obtained based on the evaluation of a calibration image by enforcing at least one symmetry and can be applied to other image acquisitions.
摘要:
A system and method for aligning prior patterning positions formed by a first SPM tip with a second SPM tip in combination with an SPM system includes identifying first location information that includes a location of the first SPM tip and a sample reference location on an SPM sample and storing the first location information in a storage area. After replacing the first SPM tip with the second SPM tip, second location information, which includes a location of the second SPM tip and the sample reference location on the SPM sample, is identified. Displacement is calculated between the location of the second SPM tip and the first SPM tip based on the first and second location information, and either the second SPM tip or a stage supporting the SPM sample is translated to align the second SPM tip with the location of the first SPM tip in accordance with the calculated displacement.
摘要:
A probe alignment tool (10) for scanning probe microscopes utilizes an attached relay optics to view the scanning probe microscope probe tip (40) and align its image in the center of the field of view of an optical microscope (36). Adjustments to optical microscope motorized stages (50) and (60) along with adjustments of scanning probe microscope stages (44), (46) and (58) allow determination of a path and distance from the center of the field of view to the probe tip (40). From such determination a target area to be examined by the scanning probe microscope may be positioned precisely and accurately under the probe tip (40). Replacement of a scanning probe microscope probe tip (40) in an atomic force microscope unit (42) may be accomplished without the loss of alignment measurements.
摘要:
A dual tip probe for scanning probe epitaxy and a method of forming the dual tip probe are disclosed. The dual tip probe includes first and second tips disposed on a cantilever arm. The first and second tips can be a reader tip and a synthesis tip, respectively. The first tip can remain in contact with a substrate during writing and provide in situ characterization of the substrate and or structures written, while the second tip can perform in non-contact mode to write and synthesis nanostructures. This feature can allow the dual tip probe to detect errors in a printed pattern using the first tip and correct the errors using the second tip.
摘要:
Devices for performing nanofabrication are provided which provide small volume reaction space and high reaction versatility. A device may include a reaction chamber adapted for nanoscale modification of a substrate and vacuum conditions; a scanning probe tip assembly enclosed within the reaction chamber; a first port coupled to the reaction chamber for delivering a gas; a second port coupled to the reaction chamber for applying a vacuum; and a substrate assembly insertedly mounted to the reaction chamber. The reaction chamber may include a body having one or more flexible walls and one or more supports to prevent the reaction chamber from collapsing under a vacuum. The device may further include an electrical conduit for coupling the tips of the scanning probe tip assembly to electrical components outside the reaction chamber. Also provided are apparatuses incorporating the devices and methods of using the devices and apparatuses.