8 results about "Dry transfer" patented technology

This invention discloses a method for fabricating flexible radio frequency (RF) devices based on dry transfer of carbon nanotube arrays, specifically comprising: 1) fabrication of a rigid support layer; 2) fabrication of a carbon nanotube array protective layer; 3) fabrication of an auxiliary layer; 4) full peeling and unwrapping; 5) attachment to the target substrate; 6) thermal release transfer of the array film; 7) residual adhesive cleaning; 8) low-temperature annealing; 9) top-down patterning; 10) defining the gate region; and 11) gate fabrication. This invention utilizes a rigid material to mechanically support the thermal release adhesive peeling process, uses a metal protective layer to prevent organic adhesive from contaminating the carbon nanotube film material, and constructs an auxiliary layer to solve the stress matching problem between the two during the transfer process. This achieves complete peeling of the carbon nanotube array to the flexible substrate with high-quality, non-destructive transfer. The RF transistor device fabricated by this invention can meet the needs of future high-speed communications.

The utility model provides a badminton racket paint surface drying transfer frame which comprises a moving plate, moving wheels are installed on the bottom face of the moving plate, supporting assemblies are installed on the two sides of the top face of the moving plate respectively, a hanging assembly is installed on the top face of the moving plate, and a clamping storage assembly is installed on one side of the hanging assembly. The clamping storage assembly comprises a clamping rod, a clamping groove is formed in one side of the clamping rod, a clamping threaded rod is rotationally connected into the clamping groove, clamping pieces are in threaded connection with the surfaces of the clamping threaded rod respectively, downward pressing hooks are fixedly connected to one side of the clamping rod at equal intervals, and blocking pieces are fixedly connected to one sides of the downward pressing hooks. And extension rods are fixedly connected to one sides of the clamping rods at equal intervals. According to the badminton racket paint spraying device, through mutual cooperation of the moving plate, the moving wheels, the supporting assembly, the hanging assembly and the clamping storage assembly, storage and transfer of badminton rackets after paint spraying can be achieved, and later drying is facilitated.

The invention relates to the technical field of perovskite device preparation, in particular to a perovskite film transfer printing method. Comprising the following steps: preparing a perovskite thin film layer on a silicon wafer substrate; sequentially depositing a first metal oxide thin film layer and a second metal oxide thin film layer with medium and high tensile stress on the surface of the perovskite thin film layer by adopting an atomic layer deposition process to jointly form a gradient stress thin film structure; adhering a viscous transfer printing carrier on the surface of the second metal oxide thin film layer, and applying external force to bend and deform the silicon wafer substrate; and when the strain energy release rate exceeds the interface adhesive force between the perovskite thin film layer and the silicon wafer substrate, the perovskite thin film layer is stripped from the silicon wafer substrate and transferred to a target substrate, hot pressing operation is performed to remove the viscous transfer printing carrier, and meanwhile, residual stress in the gradient stress thin film structure is released. The method has the advantages that dry transfer printing of the perovskite thin film is achieved, and damage to the perovskite thin film is avoided; the aluminum oxide film can passivate the surface defects of the perovskite film, and the performance of a subsequently prepared device can be improved.

The present application relates to a kind of PVDC-based batch dry transfer two-dimensional material method, comprising the following steps: S1.PDMS micro dome array is prepared using multistage tungsten needle array spotting method;S2.PDMS micro dome array is surface activated;S3.PVDC-based polymer solution is dropped on the surface of PDMS micro dome array, film coating is carried out using spin coater, and PVDC film is formed on the surface of PDMS after solidification, and PVDC / PDMS stamp array is prepared;S4.utilize stamp array, batch pickup two-dimensional material prepared on substrate in advance respectively, and form multilayer heterojunction array on stamp array;S5.stamp array with multilayer heterojunction array is released on target substrate, so that the batch transfer of two-dimensional material is completed.The present application has the advantages of low operating temperature, high yield, interface clean and the like, and can realize the efficient batch assembly of van der waals heterojunction.

The application relates to a two-dimensional material transfer device and a preparation method thereof, wherein the two-dimensional material transfer device comprises a substrate, an electrostatic generation layer arranged on one side of the substrate in the thickness direction, and an insulating layer arranged on the other side of the electrostatic generation layer in the thickness direction and away from the substrate; the electrostatic generation layer is made of a conductive material and is used for generating an electrostatic force on a two-dimensional material placed on a non-conductive initial substrate, so that the two-dimensional material is adsorbed on the surface of the insulating layer. The two-dimensional material transfer device can realize the transfer of the two-dimensional material, the whole transfer process is efficient and controllable, no pollution and impurities are introduced, the interface of the two-dimensional material is clean, and the defects of low transfer efficiency of the traditional dry transfer and easy introduction of pollution and impurities in the wet transfer are overcome.

The application discloses a high-reliability transfer method of nanomaterial based on water assistance, which comprises the following steps: preparing polydimethylsiloxane (PDMS) with micro-nano structures, and storing a small amount of water molecules in the surface micro-nano structures of the PDMS; and heating to make the water in the micro-nano structures evaporate rapidly, so as to promote the separation of the PDMS and the material to be transferred, and the material to be transferred is not prone to wrinkling, the success rate of dry transfer of nanomaterial and large-area thin film material is improved, and the application is suitable for the manufacturing field of constructing heterojunction and two-dimensional semiconductor devices by dry transfer.

The invention provides a grouting lease reduction effect test method, which comprises the following steps of: 1, mounting a soil sample; 2, preparing materials; step 3, saturation; 4, consolidation is conducted; step 5, carrying out dry rotation; sixthly, grouting is conducted; 7, wet rotation is carried out; and 8, calculating a lease reduction effect. The invention aims to provide the grouting lease reduction effect test method for obtaining the lease reduction effect of the grout during pipe jacking construction, and the problem that the lease reduction effect of the grout cannot be obtained during existing pipe jacking construction, so that the selected grout cannot be known to be appropriate is solved.

The invention discloses a photoelectric device preparation method based on dry transfer printing and a product, and the method comprises the steps: fixing a transparent adhesive tape on a platform, and enabling the adhesive surface of the transparent adhesive tape to deviate from the platform; coating a conductive solution on the viscous surface of the transparent adhesive tape in a spin coating, spray coating or blade coating manner to obtain a transparent conductive film; preparing a functional structure substrate, wherein the functional structure substrate comprises a substrate, a bottom electrode and a light-emitting layer which are stacked in sequence; and cutting a transparent adhesive tape with the transparent conductive film, and pressing the cut transparent adhesive tape on the surface of the functional structure substrate to form a transparent electrode located on one side, deviating from the bottom electrode, of the light-emitting layer so as to obtain the photoelectric device. The top electrode is prepared in a dry transfer printing mode, the problems of solvent permeation, swelling or dissolution in the solution method preparation process are avoided, and the low-solvent-resistance functional layer in the photoelectric device is protected.