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amsbio supplies gold-coated glass slides, mica, coverslips and silicon wafers.
- Our gold-coated substrates enable you to:
- Avoid paying clean room access fees
- Avoid contamination problems from multi-user evaporators
- Avoid reproducibility problems
- Features Include:
- Plasma-cleaned surfaces
- Electron-beam deposited metal films
- Titanium adhesion layer
- Prepared in a dedicated clean environment
- Availability of ellipsometric constants
Applications:
Cell Culture
Substrates are prepared in an electron beam evaporator that is solely dedicated
to the deposition of gold films. This prevents the occurrence of impurity metals
(e.g., trace levels of Cu) contaminating the gold films, as is the case when
multi-user equipment is used to coat gold substrates
Microarrays
Substrates are prepared in an electron beam evaporator using titanium, not
chromium, as the adhesion layer. This avoids the contamination that can occur
when a thin layer of chromium is used to promote adhesion of the gold film to an
underlying substrate (such as a glass microscope slide), since chromium readily
dissolves and diffuses to the surface of the gold film (and can adversely modify
the reactivity of the gold).
Surface Plasmon Reflectometry
Substrates are deposited using an electron beam evaporator, which permits
precise control of gold deposition rates and thus the surface roughness. This
ensures a high level of control over the thickness and nanometer-scale surface
roughness of gold films, as is necessary in order to generate reproducible
results with surface plasmon reflectometry.
Scanning Probe Microscopy
Substrates deposited on mica can be thermally annealed or transferred to epoxy
resin (reverse mounting) to form atomically flat surfaces suitable for scanning
probe microscopy.
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