Disc Aperture for Philips, ARM, AEI, Cambridge electron microscopes, D 400µm

Self Cleaning Gold Foil Disc Apertures

Advanced techniques of thin metal film application permits the apertures to retain a clean hole edge during prolonged beam exposure. Ultra-thin, half-micron design discourages contaminant accumulation and stabilizes astigmatic conditions to provide longer life. Conventional mechanical cleaning involving costly down-time is no longer necessary. Because the foil is ultra thin, care must be taken when handling the gold foil apertures.

Tolerances

• Nominal hole size: +/-10%