منابع مشابه
Femtosecond laser machining of multi-depth microchannel networks onto silicon
Direct writing of multi-depth microchannel branching networks into a silicon wafer with femtosecond pulses at 200 kHz is reported. The silicon wafer with the microchannels is used as the mold for rapid prototyping of microchannels on polydimethylsiloxane. The branching network is designed to serve as a gas exchanger for use in artificial lungs and bifurcates according to Murray’s law. In the de...
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Since Geim and Novoselov’s successful production of high quality graphene, its unique properties have found a number of applications. But graphene is not an exotic chemical compound; instead, it is a sheet of graphite, one atom think. Before 2008, the only way to produce graphene was through successive pealing of graphite with scotch tape until graphite flakes as thin as 1 atomic layer were lef...
متن کاملPressure and Temperature Effects in Micro-laser Assisted Machining (μ-lam) of Silicon Carbide
In the deformation and cutting process of semiconductors and ceramics, especially brittle materials such as silicon carbide (SiC), the presence of high pressure phase transformation (HPPT) is of great importance for accomplishing ductile regime machining (Patten, 2007). To augment the ductile regime machining of these nominally brittle materials, the high pressure phase can be preferentially he...
متن کاملEstimation of Temperature Distribution in Silicon during Micro Laser Assisted Machining
Silicon is machined using a diamond tool and the process is assisted with an IR Laser for the purpose of heating and thermal softening the work piece material. The laser beam passes through the tool and into the work piece, where the material is both thermally heated (by the laser) and mechanically deformed (by the tool). The laser is used to increase the work piece temperature (up to the softe...
متن کاملSpatter Tracking in Laser Machining
In laser drilling, an assist gas is often used to remove material from the drilling point. In order to design assist gas nozzles to minimize spatter formation, measurements of spatter trajectories are required. We apply computer vision methods to measure the 3D trajectories of spatter particles in a laser cutting event using a stereo camera configuration. We also propose a novel method for cali...
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ژورنال
عنوان ژورنال: Micron
سال: 2021
ISSN: 0968-4328
DOI: 10.1016/j.micron.2020.102958