Apertures and Aperture Cleaning
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.
Gold foil aperture tolerances vary as follow:
- Nominal hole size from 1 to 60 micron: +/-1micron
- Nominal hole size 70 micron and up: +/-10%
Platinum Disc, Drilled Apertures
Platinum apertures are easily cleaned by either an aperture flamer or over a bunsen burner in the open air. We maintain a wide variety of Platinum Drilled Apertures in stock with different configurations suiting all of your needs.
Platinum Apertures size tolerances vary as follow:
- Nominal hole diameter: +/- 1 micron
- Disc diameter: +/- 10 microns
- Disc thickness: +/- 10 microns
Ordering information: Gold (Au); Platinum (Pt)
Hole Sizes not listed are available upon special request.
| Nominal Hole Size | Gold | Price | Platinum | Price | ||
| 10 microns | - | - | 40010-Pt | 138.00 |  |
|
| 20 microns | - | - | 40020-Pt | 55.00 | |
|
| 30 microns | - | - | 40030-Pt | 51.00 | |
|
| 50 microns | - | - | 40050-Pt | 47.00 | |
|
| 100 microns | - | - | 40100-Pt | 47.00 | |
|
| 150 microns | - | - | 40150-Pt | 47.00 | |
|
| 2mm O.D. x 0.53mm thick: Cambridge, Siemens, JEOL, Cameca | ||||||
| 5 microns | 42005-Au |
90.00 |
|
42005-Pt | 198.00 | |
| 10 microns | 42010-Au | 62.00 | |
42010-Pt | 138.00 | |
| 15 microns | 42015-Au | 43.00 | |
42015-Pt | 92.00 | |
| 20 microns | 42020-Au | 45.00 | |
42020-Pt | 55.00 | |
| 30 microns | 42030-Au | 40.00 | |
42030-Pt | 55.00 | |
| 40 microns | 42040-Au | 40.00 | |
42040-Pt | 51.00 | |
| 50 microns | 42050-Au | 40.00 | |
42050-Pt | 47.00 | |
| 70 microns | 42070-Au | 40.00 | |
42070-Pt | 47.00 | |
| 100 microns | 42100-Au | 40.00 | |
42100-Pt | 47.00 | |
| 3mm O.D. x 0.12mm thick: Zeiss, Nanolab, Novascan | ||||||
| 10 microns | 43010-Au | 62.00 | |
43010-Pt | 138.00 | |
| 20 microns | 43020-Au | 45.00 | |
43020-Pt | 58.00 | |
| 30 microns | 43030-Au | 40.00 | |
43030-Pt | 58.00 | |
| 50 microns | 43050-Au | 40.00 | |
43050-Pt | 49.00 | |
| 60 microns | 43060-Au | 40.00 | |
43060-Pt | 49.00 | |
| 70 microns | 43070-Au | 40.00 | |
43070-Pt | 49.00 | |
| 100 microns | 43100-Au | 40.00 | |
43100-Pt | 49.00 | |
| 150 microns | 43150-Au | 40.00 | |
43150-Pt | 49.00 | |
| 200 microns | 43200-Au | 40.00 | |
43200-Pt | 49.00 | |
| 300 microns | 43300-Au | 40.00 | |
43300-Pt | 49.00 | |
| 3mm O.D. x 0.24mm thick: Philips, ARM, AEI, Cambridge | ||||||
| 5 microns | 44005-Au | 110.00 | |
44005-Pt | 198.00 | |
| 10 microns | 44010-Au | 62.00 | |
44010-Pt | 138.00 | |
| 15 microns | 44015-Au | 44.00 | |
44015-Pt | 89.00 | |
| 20 microns | 44020-Au | 44.00 | |
44020-Pt | 54.00 | |
| 25 microns | 44025-Au | 42.00 | |
44025-Pt | 54.00 | |
| 30 microns | 44030-Au | 42.00 | |
44030-Pt | 54.00 | |
| 40 microns | 44040-Au | 42.00 | |
44040-Pt | 51.00 | |
| 50 microns | 44050-Au | 42.00 | |
44050-Pt | 51.00 | |
| 60 microns | 44060-Au | 42.00 | |
44060-Pt | 51.00 | |
| 70 microns | 44070-Au | 42.00 | |
44070-Pt | 50.00 | |
| 100 microns | 44100-Au | 39.50 | |
44100-Pt | 48.00 | |
| 150 microns | 44150-Au | 42.00 | |
44150-Pt | 48.00 | |
| 200 microns | 44200-Au | 42.00 | |
44200-Pt | 48.00 | |
| 300 microns | 44300-Au | 42.00 | |
44300-Pt | 48.00 | |
| 400 microns | 44400-Au | 42.00 | |
44400-Pt | 48.00 | |
| 4mm O.D. x 0.165mm thick: ISI | ||||||
| 10 microns | - | - | 45010-Pt | 125.00 | |
|
| 20 microns | - | - | 45020-Pt | 56.00 | |
|
| 30 microns | - | - | 45030-Pt | 52.00 | |
|
| 50 microns | - | - | 45050-Pt | 48.00 | |
|
| 70 microns | - | - | 45070-Pt | 48.00 | |
|
| 100 microns | - | - | 45100-Pt | 48.00 | |
|
| 6mm O.D. x .24mm thick: JEOL | ||||||
| 10 microns | - | - | 46010-Pt | 125.00 | |
|
| 20 microns | - | - | 46020-Pt | 80.00 | |
|
| 30 microns | - | - | 46030-Pt | 80.00 | |
|
| 50 microns | - | - | 46050-Pt | 80.00 | |
|
| 100 microns | - | - | 46100-Pt | 80.00 | |
|
| 6.35mm O.D. x 0.06mm thick: ETEC | ||||||
| 30 microns | - | - | 47030-Pt | 90.00 | |
|
| 50 microns | - | - | 47050-Pt | 90.00 | |
|
| 100 microns | - | - | 47100-Pt | 90.00 | |
|
| 150 microns | - | - | 47150-Pt | 90.00 | |
|
| 200 microns | - | - | 47200-Pt | 92.00 | |
|
| 6.35mm O.D. x 0.14mm thick: ETEC Spray Aperture | ||||||
| 500 microns - | - | 47500-PtS | 92.00 | |
||
| 1000 microns - | - | 471000-PtS | 92.00 | |
||
| 12.7mm O.D. x 0.25mm thick: Cambridge, Camscan Spray Aperture | ||||||
| 500 microns - | - | 48500-PtS | 90.00 | |
||
| 1000 microns - | - | 481000-Pt | 90.00 | |
||
Wehnelt Apertures
Made from 0.004" tantalum foil. Replaceable tantalum apertures for some microscopes (Amray and Philips). They improve the performance of the electron gun.
| 49020-Ta | Wehnelt Aperture, 200µm Hole | each | 48.00 | |
| 49030-Ta | Wehnelt Aperture, 300µm Hole | each | 56.00 | |
| 49040-Ta | Wehnelt Aperture, 400µm Hole | each | 60.00 | |
| 49050-Ta | Wehnelt Aperture, 500µm Hole | each | 48.00 | |
| 49075-Ta | Wehnelt Aperture, 750µm Hole | each | 48.00 | |
| 49100-Ta | Wehnelt Aperture, 1000µm Hole | each | 48.00 | |
Strip Aperture
All the following multihole strip aperture are made from Platinum-Iridium (95:5) and are standard in our line.
HITACHI Strip Apertures
Measures: 41.0 x 4.0 x 0.10mm – 4 holes
| 49211-01 | Hole Sizes: 10-10-20-70µm | each | 540.00 | |
| 49211-02 | Hole Sizes: 30-20-20-70µm | each | 516.00 | |
| 49211-03 | Hole Sizes: 70-70-50-50µm | each | 516.00 | |
| 49211-04 | Hole Sizes: 30-50-70-100µm | each | 516.00 | |
| 49211-05 | Hole Sizes: 10-50-100-200µm | each | 516.00 | |
Measures: 45.0 x 4.0 x 0.10mm – 4 holes
| 49212-01 | Hole Sizes: 20-20-30-30µm | each | 516.00 | |
| 49212-02 | Hole Sizes: 30-70-100-200µm | each | 516.00 | |
| 49212-03 | Hole Sizes: 10-30-50-70µm | each | 542.00 | |
JEOL Strip Apertures
Measures: 9.0 x 2.35 x 0.10mm – 3 holes
| 49210-01 | Holes Sizes: 10-30-80µm | each | 460.00 | |
| 49210-02 | Hole Sizes: 10-20-100µm | each | 460.00 | |
| 49210-03 | Hole Sizes: 30-50-150µm | each | 430.00 | |
| 49210-04 | Hole Sizes: 100-200-300µm | each | 430.00 | |
Other Strip Apertures
Measures 10.0 x 2.5 x 0.10mm – 3 holes
| 49213-01 | Hole Sizes: 20-60-100µm | each | 430.00 | |
Measures 31.0 x 5.0 x 0.10mm – 4 holes
| 49214-01 | Hole Sizes: 20-30-30-50µm | each | 500.00 | |
Note: These are our standard strip apertures. For all other strip apertures or any custom made ones please inquire.
Metal Foils
For aperture cleaning, vacuum evaporation.
| 73820 | Molybdenum foil, 0.002” thick, (0.05mm); 6x6”(15.2 x 15.2 cm) | each | 46.00 | |
| 73822 | Tantalum Foil, 0.003” thick, (0.075mm);6x6" | each | 200.00 |