Diamond Materials Thin diamond forms
Diamond Films, Foils & Membranes
Thin diamond as a free-standing foil, or a membrane held on a frame.
Good to know
- A supported membrane and a fully free-standing film have different handling requirements.
- Thickness and unsupported span must be considered together.
- Mounting, coatings and the required clear opening define the finished component.
Specifications
What we define for diamond films, foils & membranes, with units and how each is typically measured. We confirm values for your application in technical review.
Request the datasheetLook up a term in the glossaryDimensions & tolerances
| Parameter | Unit | Typical test method |
|---|---|---|
| Thickness and tolerance (bulk or layer) | mm | Micrometer or optical gauge |
| Thickness uniformity (total thickness variation) | µm | Thickness mapping or interferometry |
| Free-standing span and support frame | mm | Per drawing |
| Edge condition and chip limit | Microscopy inspection to drawing | |
| Lateral size, outline or diameter, and tolerance | mm | Optical measurement |
| Flatness or surface figure, and bow | µm or fringes | Interferometry (633 nm) or profilometry |
Surface & finish
| Parameter | Unit | Typical test method |
|---|---|---|
| Surface roughness per side | nm Ra | Profilometry or AFM |
| Surface finish condition (as-grown, lapped or polished) | Visual inspection to drawing |
Material properties
| Parameter | Unit | Typical test method |
|---|---|---|
| Residual stress | MPa | Raman spectroscopy or wafer-curvature method |
| Thermal conductivity grade | W/m·K | Laser flash (ASTM E1461) |
Optical performance
| Parameter | Unit | Typical test method |
|---|---|---|
| Coating construction and thickness | nm | Spectrophotometry, XRF or cross-section |
| Transmittance over operating band or photon-energy range | % | FTIR or UV–Vis spectrophotometry |
Integration & packaging
| Parameter | Unit | Typical test method |
|---|---|---|
| Packaging, cleanliness and labelling | Per drawing | |
| Certificate of conformance and traceability | Supplier declaration |
Where it is used
Requirement to review
Have a material requirement? Let’s review it.
Share your diamond films, foils & membranes requirement, dimensions and drawing for review.