منابع مشابه
Reactive ion etching of quartz and Pyrex for microelectronic applications
The reactive ion etching of quartz and Pyrex substrates was carried out using CF4 /Ar and CF4 /O2 gas mixtures in a combined radio frequency ~rf!/microwave ~mw! plasma. It was observed that the etch rate and the surface morphology of the etched regions depended on the gas mixture ~CF4 /Ar or CF4 /O2), the relative concentration of CF4 in the gas mixture, the rf power ~and the associated self-in...
متن کاملControlled dissolution of quartz material.Part II. Quartz chemical etching applied to blanks industrial manufacturing
In many electronic applications, chemical etching process is used to manufacture the substrates. This method has been applied for long on quartz crystal blanks manufacturing for minor adjustments of the vibration frequencies. This paper pesents a way to implement an industrial chemical etching process specially dedicated for large thickness removals without damaging the blanks surface texture. ...
متن کاملMaskless and low-destructive nanofabrication on quartz by friction-induced selective etching
A low-destructive friction-induced nanofabrication method is proposed to produce three-dimensional nanostructures on a quartz surface. Without any template, nanofabrication can be achieved by low-destructive scanning on a target area and post-etching in a KOH solution. Various nanostructures, such as slopes, hierarchical stages and chessboard-like patterns, can be fabricated on the quartz surfa...
متن کاملUltrasonically induced temperature elevation in mouse ovary.
Temperature increases, resulting from exposure to 1 MHz ultrasound, were measured in in situ and in exteriorized mouse ovaries. It is concluded that temperature increases from exposure to 10 W/cm2 and less are probably not significant for producing ovarian tissue damage, but that 25 W/cm2 exposures, and greater, are of such magnitude that damaging thermal levels ensue. The significance of blood...
متن کاملUltrasonically induced morphological damage to mouse ovaries.
Mouse ovaries were exposed in vivo to 1 MHz continuous wave ultrasonic energy at spatial peak intensities ranging from 5 to 100 W/cm2 for times varying from 300 to 15 s depending on the intensity. Following exposure the ovaries were surgically removed at times ranging from immediately (within 60 s) to 7 days and prepared histologically for light microscopic analysis. The observed tissue alterat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1966
ISSN: 0028-0836,1476-4687
DOI: 10.1038/2101251a0