The GPI-300 set-up consists of:

• Ultrahigh vacuum STM module including scanner, internal vibroisolation system, and arrester mounted on DN160-CF nipple with eight DN40-CF flanges;
• Control system including the digital electronics unit, low-noise I-V converter in UHV design mounted directly on the scanner, preamplifier and filters with connectors to electrical feedthroughs of the vacuum module;
• The software;
• The end-piece on the linear manipulator for tip and sample holders transportation
• The appliance for the tip and sample holders capture by XYZ - manipulator

GPI-300 can be delivered together with technology of preparation of tungsten tips with an angle of sharpening ~ 20Ï and apex radius 2-4 nm, [K.N.Eltsov, V.M.Shevlyuga, V.Yu. Yurov, A.V.Kvit, and M.S.Kogan, Phys. Low-Dim. Struct. 9/10 (1996) 7]. As the first stage of tip preparation the standard procedure of a tungsten wire etching in an electrochemical cell mounted on a vibroisolated table is used. The oxide removal and final sharpening of tips is made by an ion bombardment directly in the vacuum chamber. The delivery consists of an electronic unit for the wire etching process control, electrochemical cell and complete know-how including a stage of tips sharpening by ion etching.

Service:

1. Adjustment of the STM into UHV chamber of the customer

2. Installation of the technology for tungsten tips preparation

3. Experimental research in a field of customer's interests with training of the local personnel.