The invention is directed to a charged particle beam apparatus that enables temperature maintenance in a cooling unit provided inside a vacuum application apparatus using a refrigerant. The charged particle beam apparatus includes a cooling tank that contains a refrigerant for cooling a cooling unit, a cooling pipe that supplies the refrigerant from the cooling tank to the cooling unit, and a unit that leads the refrigerant to liquefy when the refrigerant is biased to a solid.

An electron microscope comprises: an electron microscope main body including a phase plate that imparts a phase change to an electron wave, a moving mechanism that moves the phase plate, and a detector that acquires an image formed by an electron beam transmitted through a sample; and a control unit that controls the electron microscope main body. The control unit performs a phase plate image acquisition process of acquiring a phase plate image which is an image of the phase plate; an unevenness determination process of determining whether or not the phase plate has unevenness based on the phase plate image; and a moving mechanism control process of moving the phase plate by controlling the moving mechanism when the control unit has determined that the unevenness is present.

A method of preparing a specimen in a dual-beam charged particle microscope having: an ion beam column, that can produce an ion beam that propagates along an ion axis; an electron beam column, that can produce an electron beam that propagates along an electron axis,
comprising the following steps: Providing a precursor sample on a sample holder; Using said ion beam to cut a furrow around a selected portion of said sample; Attaching a manipulator needle to said portion, severing said portion from the rest of said sample, and using the needle to perform a lift-out of the portion away from the rest of the sample,
particularly comprising: Configuring the manipulator needle to have multiple degrees of motional freedom, comprising at least: Eucentric tilt about a tilt axis that passes through an intersection point of said ion and electron axes and is perpendicular to said electron axis; Rotation about a longitudinal axis of the needle; Whilst maintaining said portion on said needle, using said ion beam to machine at least one surface of said portion, so as to create said specimen; Whilst maintaining said portion on said needle, inspecting it with said electron beam, for at least two different values of said rotation.

Methods and systems for temporal compressive sensing are disclosed, where within each of one or more sensor array data acquisition periods, one or more sensor array measurement datasets comprising distinct linear combinations of time slice data are acquired, and where mathematical reconstruction allows for calculation of accurate representations of the individual time slice datasets.

An electron microscope comprises: an electron microscope main body including a phase plate that imparts a phase change to an electron wave, a moving mechanism that moves the phase plate, and a detector that acquires an image formed by an electron beam transmitted through a sample; and a control unit that controls the electron microscope main body. The control unit performs a phase plate image acquisition process of acquiring a phase plate image which is an image of the phase plate; an unevenness determination process of determining whether or not the phase plate has unevenness based on the phase plate image; and a moving mechanism control process of moving the phase plate by controlling the moving mechanism when the control unit has determined that the unevenness is present.

A charged particle beam device includes: a first charged particle source that generates first charged particles and irradiates a sample with the generated first charged particles; a phase plate that changes phases of the first charged particles in accordance with charged states of portions through which the first charged particles are transmitted; and a phase plate control system that controls the charging of the phase plate.

A double-tilt in-situ nanoindentation platform for TEM (transmission electron microscope) belongs to the field of in-situ characterization of the mechanical property-microstructure relationship of materials at the nano- and atomic scale. The platform is consisted of adhesive area, support beams, bearing beams, sample loading stage and mini indenter. The overall structure of the platform is prepared by semiconductor microfabrication technology. The in-situ nanoindentation experiment can be driven by bimetallic strip, V-shaped electro-thermal beam, piezoelectric ceramics, electrostatic comb or shape memory alloys et. al. The sample is obtained by focused ion beam cutting. The integrated platform can be placed in the narrow space on the front end of the TEM sample holder, giving rise to the condition of double-axis tilt. The driving device drives the mini indenter to carry out in-situ nanoindentation, in-situ compression and in-situ bending and the like of the materials in TEM. The deformation process of material can be in-situ observed in sub angstrom, atomic and nano scale to study the deformation mechanism of material, which can further reveal the relationship of microstructure-mechanical properties of the material.

In some embodiments, a system for measuring magnetic fields produced within a microscope comprising an electromagnetic lens includes a sensor support element configured to be mounted to a distal end of an elongated support member that is configured to be inserted into the microscope, and a magnetic field sensor supported by the sensor support element, the magnetic field sensor being configured to sense magnetic fields at a position within the electron microscope at which specimens are imaged during operation of the microscope.

Methods and systems for temporal compressive sensing are disclosed, where within each of one or more sensor array data acquisition periods, one or more sensor array measurement datasets comprising distinct linear combinations of time slice data are acquired, and where mathematical reconstruction allows for calculation of accurate representations of the individual time slice datasets.

A method of preparing a specimen in a dual-beam charged particle microscope having: an ion beam column, that can produce an ion beam that propagates along an ion axis; an electron beam column, that can produce an electron beam that propagates along an electron axis,
comprising the following steps: Providing a precursor sample on a sample holder; Using said ion beam to cut a furrow around a selected portion of said sample; Attaching a manipulator needle to said portion, severing said portion from the rest of said sample, and using the needle to perform a lift-out of the portion away from the rest of the sample,
particularly comprising: Configuring the manipulator needle to have multiple degrees of motional freedom, comprising at least: Eucentric tilt a about a tilt axis that passes through an intersection point of said ion and electron axes and is perpendicular to said electron axis; Rotation about a longitudinal axis of the needle; Whilst maintaining said portion on said needle, using said ion beam to machine at least one surface of said portion, so as to create said specimen; Whilst maintaining said portion on said needle, inspecting it with said electron beam, for at least two different values of said rotation.