micro Alkali-free alumina borosilicate thin glass

Alkali-free alumina-borosilicate thin glass:

The advanced flat alumina-borosilicate glass AF 32® eco is alkali-free in synthesis, It is fabricated by the down-draw manufacturing process. This technology was developed by Germany and allows the production of very thin glass thicknesses with very high quality. AF 32® eco features a low micro-roughness of typically < 1 nanometer (RMS) and has a coefficient of thermal expansion of 3,2 x 10-6 that is very close to the one of silicon. This property opens up a wide range of glass wafer applications in the semiconductor industry. Wafers used for MEMS-applications (micro-electro-mechanical systems) are often made from AF 32® eco-glass materials.

Special Properties

1-Low thermal expansion coefficient
2-very close to that of silicon
3-Very smooth surfaces
4-High optical transmittance
5-Excellent surface quality and flatness
6-Low micro roughness < 1 nm (RMS)
7-Alkali-free in synthesis

8-Application-temperature up to approx. 600 °C
9-Can be laser-cut

Typical Applications

1-Alkali-free glass wafers for semiconductor applications
2-MEMS (Micro-Electro-Mechanical Systems)
3-Wafer for Microarrays
4-Covers for optoelectronics and optical sensors
5-Substrates for hybrid electronics

6-Advanced electronic displays
7-Glass interposer

8-Glass spacers
9-Alkali-free microscopy glasses