Abstract:
A method for sample preparation for cryoelectron microscopy (CEM), wherein the sample is held in a microreactor, wherein the conditions in the microreactor are regulated relative to the environment, wherein the sample in the microreactor is frozen according to a quench freeze process, whereupon the sample, in frozen condition, is placed in the electron microscope. A microreactor for use with cryoelectron microscopy (CEM), comprising a first and second membrane, which membranes, at least in a condition of use, enclose a chamber, while the membranes are configured to last until at least the beginning of a quench freeze process.
Abstract:
A microreactor for use in a microscope, comprising a first and second cove layer (13) , which cover layers are both at least partly transparent to an electron beam (14) of an electron microscope, and extend next to each other at a mutual distance from each other and between which a chamber (15) is enclosed, wherein an inlet (4) and an outlet (5) are provided for feeding fluid through the chamber and wherein heating means (8) are provided for heating the chamber and/or elements present therein.
Abstract:
Superconducting compounds defined by either general formulae (I): A2+ eta B2+ epsilon Can- lambda Cun+1O6+2n+ delta :Me or (II): A'1+ eta B2+ epsilon Can- lambda Cun+1O5+2n+ delta :Me, wherein A represents one or more elements chosen from thallium (T1), lead (Pb), bismuth (Bi) or mercury (Hg); B represents one or more elements chosen from calcium (Ca), strontium (Sr), barium (Ba), lanthanum (La) or yttrium (Y); Me represents a doped metal; A' represents one or more elements chosen from thallium (Tl), bismuth (Bi) or mercury (Hg); n represents a natural number; delta represents a positive or negative deviation from the stoichiometric quantity of oxygen (O), wherein | delta |
Abstract:
A method for the formation of nanometer-scale electrodes, wherein strip of electrically conductive material, in particular metal, is provided with a longitudinal direction, a width direction and a thickness direction and then, with the aid of an electron beam, a groove is provided in a top surface of the strip, in the width direction of the strip, with a nanometer- scale width in the longitudinal direction of the strip.
Abstract:
A method for sample preparation for cryoelectron microscopy (CEM), wherein the sample is held in a microreactor, wherein the conditions in the microreactor are regulated relative to the environment, wherein the sample in the microreactor is frozen according to a quench freeze process, whereupon the sample, in frozen condition, is placed in the electron microscope. A microreactor for use with cryoelectron microscopy (CEM), comprising a first and second membrane, which membranes, at least in a condition of use, enclose a chamber, while the membranes are configured to last until at least the beginning of a quench freeze process.
Abstract:
The invention relates to a method for manufacturing nanometer-scale apertures, wherein, in an object, in a conventional manner, at least one aperture is provided with a nanometer-scale surface area, after which, by means of an electron beam, energy is supplied to at least the edge of said at least one aperture, such that the surface area of the respective aperture is adjusted, wherein the surface area of the aperture is controlled during adjustment and the supply of energy is regulated on the basis of the surface area change.
Abstract:
A microreactor for use in a microscope, comprising a first and second cove layer (13) , which cover layers are both at least partly transparent to an electron beam (14) of an electron microscope, and extend next to each other at a mutual distance from each other and between which a chamber (15) is enclosed, wherein an inlet (4) and an outlet (5) are provided for feeding fluid through the chamber and wherein heating means (8) are provided for heating the chamber and/or elements present therein.
Abstract:
A specimen holder for an electron microscope, comprising a rod-shaped part, which is provided near one end with a tip, which tip is arranged to receive a specimen, the rod-shaped part, in use, extending with at least the tip into the electron microscope, held by clamping means present in the electron microscope, wherein first temperature control means are provided to control the temperature of the rod-shaped part and/or the clamping means, such that this rod-shaped part and the clamping means substantially have the same temperature, at least at the location of their contact surfaces.
Abstract:
A specimen holder for an electron microscope, comprising a bar-shaped body provided adjacent one end with means for receiving a specimen, with means being present for screening the specimen from the environment at least temporarily in airtight and moisture-proof manner in a first position, which screening means comprise at least one elastic seal surrounding the bar-shaped body at least in the first position, and supporting means for arranging the specimen holder in a service position. In a second position, wherein the screening means have been removed from the first position, the bar-shaped body with the specimen-receiving means is supported by the supporting means without intermediacy of the elastic seal. The invention further relates to a device for mounting a specimen in an electron microscope.
Abstract:
A specimen holder for an electron microscope, comprising a bar-shaped body provided adjacent one end with means for receiving a specimen, with means being present for screening the specimen from the environment at least temporarily in airtight and moisture-proof manner in a first position, which screening means comprise at least one elastic seal surrounding the bar-shaped body at least in the first position, and supporting means for arranging the specimen holder in a service position. In a second position, wherein the screening means have been removed from the first position, the bar-shaped body with the specimen-receiving means is supported by the supporting means without intermediacy of the elastic seal. The invention further relates to a device for mounting a specimen in an electron microscope.