3results about How to "Uniform ablation" patented technology

A scanning path planning method for uniform laser ablation of a hemispherical resonator comprises the steps that the radius of the surface to be machined of the hemispherical resonator is measured, the azimuth angle change of each traversal point is calculated to ensure that the linear velocity of laser ablation is consistent, and then uniform ablation is achieved. And planning an ablation scanning path. Through the scanning path, uniform deposition of laser energy of each traversal point is realized, the effect of uniform laser ablation is achieved, and the problem of frequency splitting caused by non-uniformity of circumferential quality of the hemispherical harmonic oscillator is solved. The invention also relates to a method for controlling the two rotating platforms in the latitude and longitude directions of the hemispherical harmonic oscillator to move synergistically to ensure that each point on the surface is ablated by laser according to a preset path and speed. The laser ablation precision and efficiency are improved, the operation difficulty and complexity are reduced, a new efficient solution is provided for uniform laser ablation of the hemispherical harmonic oscillator, and the laser ablation device has wide application prospects.

This invention discloses an automatically target-changing pulsed laser deposition apparatus and method. The apparatus includes a process chamber, a transfer valve, and a buffer chamber. The process chamber is connected to the buffer chamber via the transfer valve and is configured as an internal vacuum chamber. The buffer chamber has a door at its upper part and operates as a vacuum chamber. A sample stage is located on the upper inner side of the process chamber. Two neck tubes are located on the two sides of the process chamber for guiding an external laser source and mounting a laser detection device, respectively. The process chamber also includes a rotatable target stage for loading and unloading targets from the buffer chamber. The buffer chamber includes a rotating target stage mechanism and a vision camera for placing the target material and recording the bottom features of the target material, respectively. This invention provides an automatically target-changing pulsed laser deposition apparatus and method with a compact structure, precise positioning, and automatic target changing capabilities, enabling fully automated deposition of ultrapure thin films.

The present application relates to a kind of guide wire delivery systems, including guide wire and radio frequency transmitter, guide wire includes guide wire body and basket structure, guide wire body proximal end is connected with radio frequency transmitter, guide wire body distal end is connected with the proximal end of basket structure, guide wire body and basket structure are made of conductive material, basket structure can be unfolded and fixed in pathological region after passing through target position, after basket structure is fixed in pathological region, radio frequency transmitter is started, and basket structure is ablated to pathological region.The basket structure of the present application can anchor guide wire directly in pathological position, reduce surgical operation, and then save operation time.Guide wire is connected with radio frequency transmitter, and radio frequency wave is emitted through basket structure, and then ablation is carried out to pathological region, without the radio frequency knife dedicated to ablation is introduced into human body, reduce the frequency of replacing surgical instruments, reduce operation cost.