摘要:
The present invention is a high-sensitivity strain probe used in high-sensitivity sensor elements of force type. By the use of semiconductor process and wire bonding technology as well as integrated forming method, the fabricated elements include: a probe, a cantilever, a cantilever substrate, resistance materials, and a processing circuit that can be applied to a probe microscope to greatly reduce the number of elements of the scanning probe microscopy. The invention attains the object of lowering the cost and effectively solves the problems of an excessively large signal-to-noise ratio and avoids using the optical elements present in a conventional microscopic probe avoiding various inconveniences and shortcomings of the prior art.
摘要:
High precision force imparting and/or a force (including weight) and displacement measuring/indicating device which includes a multi-dimensional capacitor transducer system. The multi-dimensional transducer includes a first capacitive transducer for imparting force or movement and/or detecting force, weight or position in a first direction and a second capacitive transducer for imparting force or movement and/or detecting force, weight or position in a second direction. The multi-dimensional transducer may be used to provide in situ imaging in micro-mechanical test systems.
摘要:
A cantilever for a scanning probe microscope (SPM) includes a piezoelectric element in a thicker, less flexible section near the fixed base of the cantilever and a piezoresistor in a thinner, more flexible section near the free end of the cantilever. When the SPM operates in the constant force mode, the piezoelectric element is used to control the tip-sample separation. Since the resonant frequency of the piezoelectric element is substantially higher than that of conventional piezoelectric tube scanners, much higher scan rates can be achieved. When the SPM operates in the dynamic or intermittent contact mode, a superimposed AD-DC signal is applied to the piezoelectric element, and the latter is used to vibrate the cantilever as well as to control the tip-sample spacing. In another embodiment the cantilever is supported on a knife edge and vibrates at a third or higher order resonant frequency.
摘要:
A probe formed in a flexible portion of a cantilever is protected by a protection frame. This protection frame is separated from a support portion at a border of a groove between the protection frame and the support portion. A piezoelectric crystal layer is formed in the flexible portion, and when the flexible portion is bent by an interatomic force acting between the probe and a sample, a voltage induced between the both ends of the piezoelectric crystal layer changes.
摘要:
The dynamic quantity sensor includes an electrically insulating substance layer and at least one pair of electrodes contacting the electrically insulating substance layer, wherein a plurality of conductive particles are dispersed in the electrically insulating substance layer so that a tunnel current flows when a voltage is applied between the at least one pair of electrodes, and a dynamic quantity relating to a distance between the conductive particles is detected based on the tunnel current.
摘要:
A cantilever type displacement element includes a piezoelectric film and an electrode provided on each face of the film to displace the film by convence piezoelectric effect. The electrodes are formed from platinum or palladium. The displacement element constitutes a cantilver type probe having a tip on the free end of the element. The probe is used in a scanning tunneling microscope or an information processing apparatus.
摘要:
A scanning probe microscope is used to pattern a layer of resist, and the pattern is transferred to a substrate. First, an underlayer formed of, for example, polyimide and a top layer formed of, for example, amorphous silicon are deposited on the substrate. A pattern is formed on the top layer using the tip of the cantilever in a scanning probe microscope. The pattern may consist of an oxide formed by an electric field at the cantilever tip. The top layer is then etched using the pattern as a mask and using an etchant that is selective against the underlayer. The underlayer is then etched using an etchant that is selective against the top layer and substrate. The substrate is etched with an etchant that removes the top layer but is selective against the underlayer. Finally, the underlayer is removed.
摘要:
A near field scanning optical microscope (NSOM) includes a cantilever which is aligned generally parallel to the surface of a sample. An optical waveguide extends along the cantilever to a tip which protrudes downward from the cantilever. A small aperture at the apex of the tip allows light radiation flowing through the waveguide to be directed toward the sample. The cantilever is vibrated, and variations in its resonant frequency are detected and delivered to a feedback control system to maintain a constant separation between the tip and the sample. The NSOM can also be operated as an atomic force microscope in either a contact or non-contact mode.
摘要:
An integrated tip strain sensor is combination with a single axis atomic force microscope (AFM) for determining the profile of a surface in three dimensions. A cantilever beam carries an integrated tip stem on which is deposited a piezoelectric film strain sensor. A high-resolution direct electron beam (e-beam) deposition process is used to grow a sharp tip onto the silicon (Si) cantilever structure. The direct e-beam deposition process permits the controllable fabrication of high-aspect ratio, nanometer-scale tip structures. A piezoelectric jacket with four superimposed elements is deposited on the tip stem. The piezoelectric sensors function in a plane perpendicular to that of a probe in the AFM; that is, any tip contact with the linewidth surface will cause tip deflection with a corresponding proportional electrical signal output. This tip strain sensor, coupled to a standard single axis AFM tip, allows for three-dimensional metrology with a much simpler approach while avoiding catastrophic tip "crashes". Two-dimensional edge detection of the sidewalls is used to calculate the absolute value or the linewidth of overlay, independent of the AFM principle. The technique works on any linewidth surface material, whether conductive, non-conductive or semiconductive.
摘要:
An apparatus for relatively moving a probe facing an information carrier and recording information on and/or reproducing information from the information carrier with the probe provided with a detector for detecting an error in the probe.