Thin Foil Aperture (2mm dia, 0.25mm)

51-1625-0033

Thin film apertures are frequently used in the objective lenses of high resolution and electron beam lithography instruments.

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DESCRIPTION

Thin film apertures are frequently used in the objective lenses of high resolution and electron beam lithography instruments. These apertures have the advantage that they heat up in the beam and are effectively self cleaning. This minimises astigmatism caused by a build up of carbon contamination. The small amount of contamination which deposits after lengthy operation may be removed by heating the aperture strongly for a short time with the focused electron beam.

The benefits of using this type of aperture are particularly apparent when operating at low accelerating voltages or with small probe sizes. Thin film apertures should not be used in the condenser lens as they may melt. They are, of course, more fragile to handle and can be irreparably damaged by abrasion or by a sudden rush of air in the vacuum system.

Normal tolerance on hole diameter is ±10%. Close tolerance holes ±1µm from the nominal size can be supplied at additional cost. Agar apertures are made to exceptionally high standards and are only accepted after examination in the SEM to check the perfection of the edge of the hole, its roundness and absence of pin holes in the vicinity. Other specific apertures and diameters can also be manufactured, please enquire with details of your application.

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Our eStore is managed by our ecommerce partner ModusLink. This means that on the e-invoice, you will see both the ModusLink and Oxford Instruments logos. If you wish to pay by net 30 day invoice, you will have to send us a PO with ModusLink as supplier, because the invoice will have to be paid into ModusLink’s bank account, so we need to make sure ModusLink is a registered vendor in your system and payment won’t be delayed.

If you need to register ModusLink as supplier, please feel free to send to ecommerceteam@estore.oxinst.com any documents and we will help you and fill it for you.

Delivery

Our eStore allows customers to pay for their order by prepaid methods like debit & credit card, paypal or prepaid invoice via a bank transfer and through postpaid net 30 days invoice. If you wish to pay by card or paypal, you don’t need to communicate with us first and you can also check out as guest. If you wish to pay by prepaid bank transfer, you will have to register a MyOI account first, then request to ecommerceteam@estore.oxinst.com to activate prepaid bank transfer (Proforma invoice) on your MyOI account.

If you wish to pay by net 30 days invoice, you will have to request this when you register a MyOI account. Please be aware that only customers with previous business with Oxford Instruments will be authorised to pay by net 30 day invoice. You can explain your previous business with Oxford Instruments when you register your MyOI account. If your institution or company doesn’t have any previous business relationship with Oxford Instruments, you will be asked to place at least 3 prepaid orders through the eStore before we can consider your request.

If your institution or company has a special arrangement with Oxford Instruments, please get in touch with ecommerceteam@estore.oxinst.com providing information about your contact person in Oxford Instruments

Our eStore is managed by our ecommerce partner ModusLink. This means that on the e-invoice, you will see both the ModusLink and Oxford Instruments logos. If you wish to pay by net 30 day invoice, you will have to send us a PO with ModusLink as supplier, because the invoice will have to be paid into ModusLink’s bank account, so we need to make sure ModusLink is a registered vendor in your system and payment won’t be delayed.

If you need to register ModusLink as supplier, please feel free to send to ecommerceteam@estore.oxinst.com any documents and we will help you and fill it for you.

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Our stock is shipped from The Netherlands.
Express shipping (4 to 5 working days) is Yen 6,000 (Free for orders over Yen 180,000)

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