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Large-area Scanning Probe Nanolithography Facilitated by Automated Alignment and Its Application to Substrate Fabrication for Cell Culture Studies

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Precise alignment through thick wafers using an optical copying techniquev.

J Jahns, W Däschner

|September 29, 2009

Summary

This summary is machine-generated.

Optical copying achieves submicrometer alignment for mask patterns on thick glass substrates. This method uses shadow casting or Fresnel propagation for precise pattern transfer between surfaces.

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Area of Science:

Materials Science
Optical Engineering
Nanotechnology

Background:

Accurate alignment of patterns on opposing surfaces of thick substrates is crucial for microfabrication.
Traditional alignment methods can be challenging for substrates exceeding a few millimeters in thickness.

Purpose of the Study:

To demonstrate a novel optical copying technique for submicrometer alignment of mask patterns on thick glass substrates.
To achieve high-precision alignment between the top and bottom surfaces of a glass substrate.

Main Methods:

Utilizing optical copying, specifically shadow casting or Fresnel propagation, to transfer alignment patterns.
Performing alignment experiments on a 3-mm-thick quartz glass substrate.

Main Results:

Achieved submicrometer alignment of mask patterns on both surfaces of the thick glass substrate.
Demonstrated precise pattern transfer through optical copying, enabling accurate alignment.

Conclusions:

Optical copying is a viable and effective method for achieving high-precision submicrometer alignment on thick glass substrates.
The technique offers a promising solution for advanced microfabrication processes requiring accurate surface-to-surface pattern registration.