摘要:
There is provided a dynamic mode AFM apparatus that configures an automatic control system which can automatically obtain a probe-sample distance, and allows high-speed identification of atoms of the sample surface.The dynamic mode AFM apparatus comprises: a scanner 3 for performing three-dimensional relative scanning of a cantilever 2 and a sample 1; a means 8 for generating an AC signal of a resonance frequency in a mode with flexural vibration of the cantilever 2; a means 9 for exciting the flexural vibration of the cantilever 2 with the resonance frequency; a means 10 for generating an AC signal of a second frequency which is lower than the frequency of the flexural vibration; a means 11 for modulating a probe 2A-sample 1 distance of the cantilever 2 with the second frequency; a means 5 for detecting fluctuation of the resonance frequency; a means 4 for detecting vibration of the cantilever; and a means 6 for detecting a fluctuation component which is contained in a detected signal by the means 5 for detecting the resonance frequency fluctuation and synchronized with a modulation signal of the probe 2A-sample 1 distance, wherein an inclination of the resonance frequency against the probe 2A-sample 1 distance is obtained from the strength and polarity of the fluctuation component.
摘要:
A torsional resonator for suppressing unnecessary flexural vibration and providing excellent resonance characteristic is provided.A vibrator is a beam structure or a paddle-like projection structure added onto a beam structure and an electrostatic force produced due to the potential difference between an electrode and the vibrator adds a moment with the axis of the beam of the vibrator as the center axis, but does not add a force for producing flexure to the beam. As one method, the same AC signal and DC bias voltages different in polarity are applied to an electrode pair of the electrode brought away from the vibrator and the electrode brought close to the vibrator with torsional vibration of the vibrator, so that only torsional vibration can be excited.
摘要:
A cantilever array having a simple structure and being able to reliably detect a surface of a sample, a method for fabricating the same, a scanning probe microscope, a sliding apparatus of a guiding and rotating mechanism, a sensor, a homodyne laser interferometer, a laser Doppler interferometer having an optically exciting function for exciting a sample, each using the same, and a method for exciting cantilevers. The cantilever array includes a large number of compliant cantilevers sliding on a surface of a sample.
摘要:
A precise and high load resistance moving method and device is provided, in which a piezoelectric element which generates a shear deformation and a wedge, or, a piezoelectric element which generates a shear deformation, a piezoelectric element which generates a vertical deformation, and a wedge are combined, and a moving body can be precisely moved in a perpendicular direction even when large force is applied to a sliding surface. A precise and high load resistance moving method and device is provided, in which by layering piezoelectric elements which generate shear deformations so that their shear directions differ, and by combining with a wedge, a moving body can be precisely moved in a perpendicular direction even when large force is applied to a sliding surface. A wedge-shaped moving element 23 arranged on a surface in a horizontal direction of a fixed body, and to which a piezoelectric element 24A which generates a shear deformation is fixed, a pulse source 30 for rapidly deforming and driving the piezoelectric element 24A, and a moving body 25 which contacts a wall surface 22 of the fixed body in the perpendicular direction by a drive of the wedge-shaped moving element 23 and moves in the perpendicular direction are provided, and by striking or extracting the wedge-shaped moving element 23 to/from the moving body 25, a movement positioning of the moving body 25 is performed.
摘要:
A nanogap array method and device are provided which can trap, detect, and identify a substance with high sensitivity even if the substance to be detected is molecules contained in liquid. This device includes a cantilever array (3) including cantilevers (4) each having a probe (5), and a substrate (1) disposed below the cantilever array (3) and having modified surfaced (2) arranged so as to correspond to the probe (5) of each cantilever (4). Nanometer-sized gaps are defined between the modified surfaces (2) of the substrate (1) and tips of the probes (5) of the cantilevers (4) to trap, detect, and identify at least one unknown substance (6) set on the modified surfaces (2).
摘要:
A three-dimensional structure composed of highly-reliable silicon ultrafine wires, a method for producing the three-dimensional structure, and a device including the same are provided. The three-dimensional structure composed of silicon fine wires includes wires (2) on the order of nanometers to micrometers formed by wet etching utilizing the crystallinity of a single-crystal material.
摘要:
A precise and high load resistance moving method to perform fine movement positioning of the moving body, by fixing a piezoelectric element which generates a shear deformation, to a bottom surface of a wedge-shaped moving element placed on a base, and deforming the piezoelectric element by driving the piezoelectric element with drive pulses to move the wedge-shaped moving element along a first axis in which the wedge-shaped moving element drives into or away from a moving body to move the moving body along a second axis in upward and downward direction relative to the base. Also, a precise and high load resistance moving device including a wedge-shaped moving element, a pulse source, and a moving body vertically movable in upward or downward direction relative to the base.
摘要:
A heterodyne laser having a first optical path for guiding excitation light and a second optical path for guiding measurement light. The heterodyne laser includes an optical probe body for optically coupling and structurally combining the first optical path and the second optical path, and includes a reflection mirror, a beam splitter, a focal lens and a ¼ wavelength plate. The excitation light from the first optical path is introduced through the reflection mirror, the beam splitter and the focal lens into a measurement object.
摘要:
A precise and high load resistance moving method to perform fine movement positioning of the moving body, by fixing a piezoelectric element which generates a shear deformation, to a bottom surface of a wedge-shaped moving element placed on a base, and deforming the piezoelectric element by driving the piezoelectric element with drive pulses to move the wedge-shaped moving element along a first axis in which the wedge-shaped moving element drives into or away from a moving body to move the moving body along a second axis in upward and downward direction relative to the base. Also, a precise and high load resistance moving device including a wedge-shaped moving element, a pulse source, and a moving body vertically movable in upward or downward direction relative to the base.
摘要:
A cantilever array having a simple structure and being able to reliably detect a surface of a sample, a method for fabricating the same, a scanning probe microscope, a sliding apparatus of a guiding and rotating mechanism, a sensor, a homodyne laser interferometer, a laser Doppler interferometer having an optically exciting function for exciting a sample, each using the same, and a method for exciting cantilevers. The cantilever array includes a large number of compliant cantilevers sliding on a surface of a sample.