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2 SUMMARY AND RECOMMENDATIONS
Pages 3-8

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From page 3...
... Beam technologies are used extensively in integrated circuit manufacturing for materials deposition, to improve the thickness and compositional uniformity of metals, dielectrics, and semiconducting materials deposited on substrates. Over the past 10 years, in order to obtain product uniformity and quality while achieving size reduction, sputtering has replaced evaporation for metals deposition in integrated circuits, and low-pressure chemical vapor deposition has given significant improvements for dielectric materials, metals, and polysiIicon deposits.
From page 4...
... Enhanced CVD processes have taken the form of either thermally assisted CVD or PACVD for thermal and electron excitation deposition, particularly for selective-area deposition. The plasma- or photon-assisted CVD process is quite useful in depositing ceramic coatings (Si3N4, SiC, A1N, A12O3, etc.)
From page 5...
... The advantages of a laser in an integrated processing system for forming shapes are the short interaction times, high flexibility, and ease of on-line inspection and process control. A commercial process already has been developed using lasers for hole drilling and sheet cutting; presently, sheet metal cutting accounts for the largest fraction of CO2 laser sales.
From page 6...
... Some important considerations for expanding integrated beam processing systems are as · more studies to better understand the process steps so that the proper experimental variables can be measured and process simulation models developed, · development of computer algorithms based on simulation models coupled with expert system artificial intelligence techniques to develop smart control programs, · education of students with cross-disciplinary skills to undertake the above items, and · foster team building between equipment vendors and materials processors. RECOMMENDATIONS The committee concludes that all of the beam technologies treated in this report are capable of incorporation into fully integrated processing systems.
From page 7...
... ~ Develop process models: An element required in machine control is the availability of accurate process models and simulations. These are essential to properly interpret sensor readings and thereby issue control commands.


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