Films and getters · Future bench (lab)
Graphene and 2D membranes
2Dvalues describe: CVD graphene
Big science (accelerators, light sources, public fusion)Semiconductor equipment & lithography
What it enables
Electron-transparent, gas-tight windows: in-situ microscopy and differential pumping without apertures.
Status and pusher
Lab demonstrations and niche products. Pushed by microscopy and detector communities.
Properties
The values below are candidate: compiled from the sources named, not yet individually validated. Provisional provenance: CERN Accelerator School, vacuum and materials proceedings.
Wet cleaning
| Recipe | transfer chemistry is the whole difficulty; residue from the transfer polymer is the contamination |
|---|---|
| Forbidden | none noted |
| Limit | transfer residue |
Vacuum and outgassing
| Outgassing, unbaked (10 h) | insufficient data |
|---|---|
| Outgassing, baked | insufficient data |
| Vapour pressure | none |
Thermal
| CTE | -8, negative ppm/K |
|---|---|
| Thermal conductivity | 2000–4000 in-plane W/m·K |
Mechanical
| Tensile | 130 GPa intrinsic MPa |
|---|---|
| Young's modulus | 1000 GPa |
Electrical and magnetic
| Relative permeability | diamagnetic |
|---|
Engineering
| Process notes | impermeable to helium in principle, which is the interest |
|---|---|
| Availability and cost | research |