Based on Grune formula, the dependence of electrons'penetration depth on different electron energy has been analyzed theoretically, and an experimental lithography investigation has been carried out on homemade resist Suzhou-2 in SDS-2 Electron Beams System at 5 keV, 10 keV,15 keV, 20 keV, 25 keV, 30 keV.The relation of energ/etching depth is obtained.
This paper describes the design of a new type of working table of photolithographic equipment, with the exposing area up to 356 mm ×356 mm, the alignment accuracy of ±2 μm, and the exposing clearance of 0～25 μm.
This paper describes the design on a new type of working table of photolithographic equipment,which is possessed of the exposing area up to 336. 5 mm ×336. 5 mm,the alignment accuracy of ± 2 μm, and the exposing clearance of 0～25 μm.
Methods 26 patients with lung metastasis were selected to scan by CT with four kinds of different protocols , including 195 mAs /6.5mm ( exposing dose/scan thickness ) ,195 mAs/3.2 mm,50 mAs/3.2 mm,30 mAs/3.2 mm in all,then the number,size,position of nodules detected with dfferent dose were calculated respectivly.
Results The total number of lung nodules detected with 195 mAs/3.2 mm,50 mAs/3.2 mm and 30 mAs/3.2 mm were no significant difference,but when classificated according to their size,as the exposing dose decreased,the number of nodules under 2 mm or 5 mm was detected decreasingly,morever,the noise of image increased.
with fixed exposal time and increasing laser power, the depth of exposal increases linearly and can be express by the equation: y =40. 5x0.151y = 0 .238x+44.454. Finally, microstructures of SU-8 photoresist with difference thickness are manufactured according to previous experimental results.
Methods Choroidal neovascularization was induced in 20 Brown Norway (BN) rats (40 eyes) by diode laser (wavelength: 810 nm; exposal time: 0.1 second; facular diameter:100 μm; energy: 120 mW), and the rats were divided randomly into experimental and control group with 10 rats (20 eyes) in each group.
Their cytotoxic properties were determined by a 3-day continuous exposure MTT assay with murine melanoma B16 cells.
coli) and photo-bacteria were used as samples, the antibacterial effect of stainless steel was very weak, while the percentage of bacteria dying from exposure to metallic copper for 30 min was over 90%.
popularis increased markedly over the increase of the duration of exposure to salinity, and culminated after 28 days of salt stress.
Good control over the grating's reflectivity and the separation of the two Bragg wavelengths is enabled by adjusting the stretch, the length of the grating, and the exposure.
According to the percentage of damaged DNA with tail and its TL/D (tail length to diameter of nucleus) value, the relationship between DNA damage degree and heavy metal dose and exposure time was determined.