4 results about "Nanometer size" patented technology

The application discloses a hetero-epitaxial niobium pentoxide thin film and a preparation method and application thereof, and belongs to the technical field of thin film deposition. The preparation method comprises the following steps: placing a substrate and target material in a vacuum system, bombarding the target material through a pulse laser, and depositing an initial hetero-epitaxial niobium pentoxide thin film on the surface of the substrate; and performing annealing treatment on the initial hetero-epitaxial niobium pentoxide thin film to obtain the hetero-epitaxial niobium pentoxide thin film. The hetero-epitaxial niobium pentoxide thin film is grown by using a pulse laser deposition system, the deposition rate of the thin film is high, the repeatability is good, the prepared thin film can keep a high consistency in purity and a stoichiometric ratio with the target material, the process control can be performed on a nanometer scale, the thickness of the thin film can be adjusted to a nanometer level, the preparation method is simple, the target material can be reused, the growth parameters can be flexibly regulated, the growth state of the thin film can be monitored in real time, and a high-quality hetero-interface structure is obtained.

Method of measuring a dimension of a nanometer sized high aspect ratio structure of a sample using a scanning probe microscope, the nanometer sized high aspect ratio structure comprising a recess having a height dimension in a direction transverse to the surface and a lateral dimension in a direction parallel to the surface, wherein the height dimension is greater than the lateral dimension; wherein the method comprises the steps of: - scanning the surface of the sample in a scanning direction parallel to the surface by a probe including a probe tip attached to the scanning probe microscope, and lowering, during the step of scanning, the probe tip into the recess such as to determine the dimension of the nanometer sized high aspect ratio structure; - wherein the recess comprises a recess width between at least two opposing sidewalls in a direction parallel to the scanning direction; - wherein the probe tip, which is lowered into the recess, comprises a base, an apex at an end of the base arranged to interface with the surface of the sample, and a distancer, wherein said base extends parallel to a longitudinal axis of the probe tip and wherein the distancer extends from the base such as to extend radially outward for defining a width of the probe tip including the distancer; and - wherein the width of the probe tip is smaller than the recess width.

The present application relates to the field of high polymer nanomaterials, and particularly relates to an elastomer with nano-sized imprinting precision and a preparation method and application, a surface of the elastomer is an imprinting layer with nano-structure, the imprinting layer has imprinting structures with a minimum diameter of sub-10 nanometers and a length-diameter ratio of (3-100):1, a water contact angle of the imprinting layer is 70-140 DEG, the preparation method comprises synthesis of a dynamic unit, construction of a dynamic heterogeneous elastomer, nano-imprinting, introduction of a dynamic covalent bond and a crystalline phase into the dynamic heterogeneous elastomer, in the process of imprinting, the elastomer network enters nano-pores of a template and is fully filled, reassembled into a complete network structure, and the crystalline phase further limits resilience of the elastomer network to ensure fidelity of the imprinting structure, that is, the elastomer is prepared by translocation crystallization of the elastomer network in the nano-pores.

The invention discloses a method for simulating low-permeability reservoir pore structure design and manufacturing a micro-fluidic chip. The method comprises the following steps: extracting a pore structure by using a casting body sheet, an optical microscope and an SEM image; the pore structure is placed in Matlab and OpenFOAM to calculate and verify whether the pore size and permeability of the structure accord with the real condition of an oil reservoir, and then an overlay technology is utilized to manufacture a micro-fluidic chip, so that pores and fractures with different depths can be etched in the same micro-fluidic chip to simulate pores and fractures with different sizes in rocks. And the micro-sized and nano-sized pore cracks can be etched in the same micro-fluidic chip, so that the method has an important value for research on pore-sized CO2 oil displacement storage by using the micro-fluidic chip.