Abstract:
Specimen holder, specimen inspection apparatus, and specimen inspection method for observing or inspecting a specimen consisting of cultured cells. The specimen holder has a body portion and a film. The body portion has a specimen-holding surface opened to permit access from the outside. The film has a first surface forming the specimen-holding surface. The specimen disposed on the first surface of the film can be irradiated with a primary beam for observation or inspection of the specimen via the film. A region coated with an electrically conductive film is formed on the bottom surface of the body portion facing away from the specimen-holding surface. An optically transparent region not coated with the electrically conductive film is also formed on the bottom surface.
Abstract:
A closed observational device for an electron microscope is formed of a housing. The housing includes a liquid chamber formed therein, at least one view hole formed at each of a top side thereof and a bottom side thereof and communicating with the liquid chamber and coaxially aligned with the other, and a film mounted to and sealing each of the view holes. Accordingly, a general specimen or a live cell can be placed into the liquid chamber for microscopic observation under the electron microscope. Besides, the present invention can enclose the liquid inside the housing to prevent the liquid from exhausting outward or volatilization.
Abstract:
The present invention relates to a device and a method for the stoichiometric analysis of samples.In order to study the spatial distribution of different proteins in the plasma membrane of a complete cell within a short time frame, a device and a method are proposed for the stoichiometric analysis of samples.The object is established by means of a device for the stoichiometric analysis of samples, said device comprising a) a sample processing device comprising a sample holder for holding the sample, means for setting the temperature, means for adding and removing fluids (including gases) and at least one fluid reservoir, b) an electron microscope with a detector, and c) a computer-controlled process control system for controlling the means for setting the temperature and the means for adding and removing fluids (including gases), a computer-controlled and automated imaging device that captures images by means of the electron microscope, a unit that stores the captured images and an image analysis unit controlled by the computer.
Abstract:
An electronic microscope includes a carrier, a first driving unit, a flow-buffer unit and an electron source. The carrier carries a sample. The first driving unit drives a first fluid to flow along a first flow path, wherein the first flow path passes through the sample. The flow-buffer unit is disposed on the first flow path to perform buffering on the first fluid, wherein the first fluid flows through the flow-buffer unit and the carrier in sequence. The electron source provides an electron beam to the sample.
Abstract:
Provided is a transport device in which a reduction in the size and a reduction in the cost of the entire device are possible. A transport unit which is interposed between a sub-chamber and a first treatment chamber is provided with: a transport bar which transports a sample along a right-left direction in a preliminary sample chamber; a support which supports the transport bar; a case which supports the support so as to be rotatable around a rotation axis intersecting the right-left direction; and a second O-ring which seals an inside of the case. The preliminary sample chamber and a first treatment space can communicate with each other through the inside of the case. The transport bar is made so as to be able to transition between a first state where the transport bar can transport the sample between the preliminary sample chamber and the inside of the case, and a second state where the transport bar can transport the sample between the first treatment space and the inside of the case, by rotation of the support with respect to the case.
Abstract:
This disclosure provides systems, methods, and apparatus related to liquid flow cells for microscopy. In one aspect, a device includes a substrate having a first and a second oxide layer disposed on surfaces of the substrate. A first and a second nitride layer are disposed on the first and second oxide layers, respectively. A cavity is defined in the first oxide layer, the first nitride layer, and the substrate, with the cavity including a third nitride layer disposed on walls of the substrate and the second oxide layer that define the cavity. A channel is defined in the second oxide layer. An inlet port and an outlet port are defined in the second nitride layer and in fluid communication with the channel. A plurality of viewports is defined in the second nitride layer. A first graphene sheet is disposed on the second nitride layer covering the plurality of viewports.
Abstract:
A micro-reactor is provided for observing small particles, cells, bacteria, viruses or protein molecules in a fluid. The micro-reactor includes a first channel for containing the fluid and a second channel adjacent to the first channel. A gap connects the first channel and the second channel and a window transparent to the method of inspection is provided at the gap. A static or dynamic gradient, such as a gradient in concentration of a chemical or biological material, in pressure, in temperature, in electric potential, or in magnetic field, is applied across the gap, thereby causing the particles to cross the gap. By detecting a property of the particles upstream in the first channel and then applying a pressure burst over the channels when the property meets certain pre-set criteria, only selected particles can be placed in the gap.
Abstract:
An electrochemical cell apparatus is disclosed where the cell has a chamber for containing an electrolyte. The chamber is situated between a bottom and a top substrate. One or more bottom windows are in the bottom substrate and one or more top windows are in the top substrate. Each window has a window cover facing the chamber. The top window and bottom window each have a portion in alignment so that an electron beam passes through both respective portions. A spacer is deposited between the top and bottom substrate and forming walls surrounding the chamber. Two or more electrodes, each having an interior portion that is within the chamber and electrically continuous with an exterior portion external to the chamber, are located on the chamber side of the bottom substrate.
Abstract:
Provided is an observation method by an electron microscope, in which a biological sample can be observed as it is alive and a situation that the biological sample is moving can be observed using an electron microscope, and a composition for evaporation suppression under vacuum, a scanning electron microscope, and a transmission electron microscope used in the method.The sample observation method by an electron microscope according to the invention includes applying a composition for evaporation suppression containing at least one kind selected from an amphiphilic compound, oils and fats, and an ionic liquid to the surface of a sample to form a thin film, and covering the sample with the thin film, and displaying an electron microscopic image of the sample, which is covered with the thin film and accommodated in a sample chamber under vacuum, on a display device.
Abstract:
An object of the invention is to provide an electron beam device and a sample holding device for the electron beam device that can observe the reaction between a sample and a gas at high resolution while a gas atmosphere is maintained even by using thin diaphragms.To solve one of the problems described above, in an electron beam device having the function of separately exhausting an electron beam irradiation portion of an optical column, a sample chamber and an observation chamber, a gas supply means for supplying a gas to a sample and an exhaust means for exhausting a gas are provided to sample holding means, diaphragms are disposed above and below the sample to separate the gas atmosphere and vacuum of the sample chamber and to constitute a cell sealing the atmosphere around the sample, and a mechanism for spraying a gas is provided to the outside of the diaphragms. The gas sprayed outside the diaphragms has low electron beam scattering performance such as hydrogen, oxygen or nitrogen. The diaphragm is an amorphous film formed of a light element such as a carbon film, an oxide film and a nitride film capable of transmitting the electron beam.