WIRES FOR EVAPORATION, 99.99%
High purity wires are available as follows. On request, we will include free of charge a 500mm length, 1mm diam. high purity Al wire with your next order. Al is best for making solid or two-way, optical quality mirrors.

Cat. No.	Material	Diameter	Length
V031	60:40 Gold/ palladium	0.2mm Ø	3m
V035	Platinum	0.1mm Ø	1 or 10m
V0352	Platinum	0.2mm Ø	0.6m
V036	Palladium	0.2mm Ø	0.6m
V037	80:20 Platinum/ palladium	0.2mm Ø	3m
V039	Gold	0.2mm Ø	1 or 5m
V0395	Gold	0.5mm Ø	100mm
V042	Silver	0.2mm Ø	3.05m
V0425	Silver	0.2mm Ø	15.2m

V036 Palladium wire, 0.2mm diam AUD68.00 /600mm stock?
V031 Gold/Palladium wire, 0.2mm diam AUD208.00 /3m stock?
V035 Platinum wire, 0.1mm diam AUD54.00 /1m 10% discount for 10 stock?
V0352 Platinum wire, 0.2mm diam AUD194.00 /600mm stock?
V037 Platinum/palladium wire, 0.2mm AUD155.00 /3m stock?
V039 Gold wire, 0.2mm diam AUD56.00 /1m 10% discount for 5 stock?
V0395 Gold wire, 0.5mm diam AUD47.00 /100mm stock?
V042 Silver wire, 0.2mm diam AUD88.00 /3.05m stock?
V0425 Silver wire, 0.2mm diam AUD394.00 /15.2m stock?

TUNGSTEN WIRE
Pre-cleaned, equivalent to 218 grade of GE, ready for use. All 99.95% pure.

We can supply wholesale quantities of tungsten wires and baskets. Inquire

V009 Tungsten wire, 0.13mm diam AUD11.00 /6.1m stock?
V010 Tungsten wire, 0.2mm diam AUD16.00 /2m stock?
V011 Tungsten wire, 0.5mm diam AUD28.00 /5m 10% discount for 10 stock?
V012 Tungsten wire, 0.89mm diam AUD60.00 /6.1m stock?
V013 Tungsten wire, 1.0mm diam, 99.95% purity AUD48.00 /2m 10% discount for 10 stock?

INDIUM WIRE for v.h. vacuum seals, low temperature soldering and evaporated coatings
Malleable indium is recommended for static seals in very high vacuum systems. Indium also produces excellent evaporated coatings. These are used in the physical sciences, including for the production of efficient, tarnish resistant mirrors and as a low melting point solder, using pure indium or alloyed.
These wires are produced to 99.999% purity and guaranteed to be no less than 99.99% pure indium.
Indium: At. wt. 114.82; at. no. 49; m.p. 156.6 degrees C; b.p. 2080 degrees C; sp. gr. 7.31; valence 1,2 or 3.
For practical considerations indium is non-toxic.
Sealing with indium
Indium is used as a sealant to bond non-wetting surfaces. Using a compression seal made from indium, one can join glass, ceramics and metals. Compression breaks the oxide layer and creates a bond between indium and substrate.
Indium seals are especially useful where low temperatures and physical vibrations are concerns. Cryogenic and high vacuum environments are areas where indium seals have become an essential component of the manufacturing process.
Indium is favoured in high vacuum electron microscope vacuum seals since the material perfectly moulds into existing surfaces and forms a tight, but easily broken and renewed bond in static positions. The seal remains perfect up to the melting point of indium - which is greater than the vacuum-bake temperature in these systems. Outgassing is very low and of a nature that does not impair instrument performance.
For larger quantities ask for a quotation. Indium requirements for EM are small, but we can supply large commercial quantities at BEST prices.

The PD suffixed 1.5mm indium wire is identical to the VIn15, except it was badly wound and therefore is marginal for vacuum sealing applications. Perfect though for evaporation and low temperature soldering.

We supply indium products at wholesale prices, inquire
Prices are for indium wire now in stock. New stock would need to be priced on current cost.
User notes | MSDS

Orders for greater length will be supplied in one, at most 2 pieces.
VIN05 Indium wire 0.5mm diam. 4N AUD28.00 /m 10% discount for 10 stock?
VIN07 Indium wire 0.7mm diam. 4N, AUD32.00 /m 10% discount for 10 stock?
VIN10 Indium wire 1.0mm diam. 4N, AUD35.00 /m 10% discount for 10 stock?
VIN15 Indium wire 1.5mm diam. 4N AUD42.00 /500mm 10% discount for 10 stock?
VIN15PD Indium wire 1.5mm diam. 4N, with physical damage AUD35.00 /500mm 10% discount for 10 stock?

NICHROME WIRE
Nichrome wire for inoculating and other loops for laboratory use. 30 gauge/ 0.25mm and 0.6mm diameter. The wire is nominally 80 Ni and 20 Cr with very minor impurities except for 0.5% Mn. Resistance over 300mm is 6.2 Ohm for the 0.25mm wire and 1.2 Ohm for the 0.6mm wire.

VNICR-025 Nichrome 80/20 wire, 0.25mm diam (0.0098") AUD19.00 /15m stock?

CARBON STRING AND CORD
For carbon coating, these do not evaporate from a point and hence give more uniform coatings. Thickness may be changed by using one or several strings/yarns. Cord gives thicker coatings and is more suitable for dispersive analyses and self-supporting carbon films.

Note on Carbon Fibre:
These do not require as many strands as the previously supplied string, so it is more cost effective. It also gives a better coating and improved electrical conductivity.
As a guide, one length of carbon fibre will give approximately 10nm, and two lengths 20nm.
To use, twist the carbon fibre lightly together and place between the sprung electrodes, trimming any surplus.

Approximate measurements:
V004 - width 2mm, thickness 0.1mm
V005 - width 2mm, thickness 1.0mm

V004 Carbon fibre AUD10.00 /1m 10% discount for 10 stock?
V005 Carbon cord AUD33.00 /1m 10% discount for 10 stock?

GRAPHITE RODS
Spectrographically pure graphite rods 305mm long. All rods contain amorphous and graphite carbon. Analytically these rods are identical. The graphite content of carbon rods is changed by high temperature baking. Dull surface rods are high in carbon and shiny rods are high in graphite. Graphite rods have less electrical resistance; they are better electrical conductors, so they need greater electric currents to sublime. The possible and actual evaporation settings determine which rods work better for the preparation of suitable carbon films.

These are Grade 1 rods; impurities are under 2ppm.

V002G Graphite rods, 6.2mm diam. AUD91.00 /pk/12 stock?
V001G Graphite rods, 3mm diam. AUD79.00 /pk/12 stock?
V003G Graphite rods, 4.6mm diam. AUD82.00 /pk/12 stock?

MANUAL CARBON ROD SHAPING TOOL
Simple hand tool for shaping carbon rods into about two millimeter cylindrical tips. Rod is inserted into tool and rotated by hand against an adjustable tungsten carbide cutter until a cylinder of the desired length is formed.
Prior sharpening of rods using an office pencil sharpener is required. The sharpener should be used for that purpose only. The cutting blade cuts into the side of the rotated rod and cannot cut into the end of a flat rod.

V57 Carbon/ graphite rod shaping tool for 3mm rods AUD76.00 stock?
V572 Carbon/ graphite rod shaping tool for 6.2mm rods AUD87.00 stock?

ELECTRIC CARBON ROD SHAPING TOOL
Takes 3-4 seconds to produce a straight sided, 1mm diameter (adjustable, cylindrical) carbon tip on 3mm or 6mm carbon rods. Two carbide blades shape the tip. A gauge is included for adjusting the blade gap. Dust catcher is easily removed for cleaning or blade adjustment. The device is driven by a durable electric motor and creates a smoother and more uniform carbon tip than any hand sharpener.

The kit includes a blade gauge and a 3mm rod adapter.
To create the point, it is best to sharpen rods with a pencil sharpener prior to shaping.
This unit is constructed for 115 Volts, but is supplied complete with a suitable transformer.

V58 Electric carbon rod shaping tool, 230V AUD901.00 stock?

MOLYBDENUM BOATS
These are well suited for heat cleaning of molybdenum or tantalum apertures and the evaporation of powders. To clean apertures: pre-clean aperture in solvent (chloroform).
Place aperture in boat and bring to 10^-4 pascal. Heat for 5 minutes to cherry-red only. Leave to cool prior to venting.
Thickness 0.05mm, total length 75mm. Trough: 12mm long x 6mm wide x 1mm deep, pk/5.

V021 Molybdenum boats, 75mm long, 12 x 6mm trough AUD31.00 /pk/5 stock?

TUNGSTEN ALUMINA BOATS for cleaning molybdenum apertures and evaporation
V028 and V029 are a combination of the refractory metal tungsten and an alumina barrier (Al₂O₃) coating over the tab area. The exposed metal area comprising the bottom of the boat allows the sample to be in good thermal contact with the source. The barrier will tend to help concentrate the heat towards the center. The alumina barrier will inhibit an evaporant (if used as a sample instead of an aperture) from creeping toward the heat sink or from wetting the entire boat.
V028: Boat 82.5 x 12.7mm, trough 19 x 6.3 x 2.4mm deep.
V039: Boat 101.6 x 25.4mm, trough 44.5 x 16 x 2.4mm deep.
V030 replaces alumina crucibles for some specific applications. Good heat transfer yet has alumina inertness. Evaporant does not wet the alumina: no resistant change of the boat when evaporant melts. Due to the non-wetting characteristic, the evaporant forms a sphere when melted, resulting in a point source.
Boat 101.6 x 12.7mm, dimple Ø 12.7 x 3.2mm deep.
Melting point of tungsten boats with coated Al₂O₃ tabs: 3422°C.

V028 Alumina coated tungsten boats, trough 19 x 6.3mm AUD112.00 /pk/5 stock?
V029 Alumina coated tungsten boats, trough 44.5 x 16mm AUD171.00 /pk/5 stock?
V030 Alumina coated tungsten boats, 12.7 x 3.2mm dimple AUD103.00 /pk/5 stock?

TUNGSTEN WIRE BASKETS
Heavy duty, 8mm Ø x 10mm depth, 8 turns, overall length 110mm. 0.5mm Ø wire. 2/pkt.

V018 Tungsten basket AUD14.00 /pk/2 10% discount for 10 stock?

MOLYBDENUM FOIL
For self-made boats, for the evaporation of powders and heat cleaning of molybdenum and tungsten apertures. 150 x 150mm and 0.05mm thick.

V024 Molybdenum foil, 0.05mm thick, 152mm x 152mm AUD126.00 /pk/1 stock?

PLASTIC REPLICATING SHEETS
These sheets are available in two different plastics and three thicknesses. The material softens in Acetone and can be applied and gently pressed against a surface which was also wetted with acetone. Stripped off when dry, the replicas will hold a negative image of the replicated surface for inspection by scanning or light microscopy.
For TEM a second replica made by the evaporation of carbon and metal will produce a high resolution positive replica. Smoother and finer detail replicas require thinner replicating film. So the Triphan is better suited to the reproduction of highly sculptured surfaces.
Note: Cut pieces of film roughly rectangular (hold with tweezers), then snip off one corner (top right is the convention for notching sheet-films) Then place the film face down onto the surface to be replicated. Later, with the replica facing you, the cut corner will be in the top right position (or bottom left) and so you know which side is the replica.
20 sheets per packet.
User note

V111 Cellulose acetate 22µm thick, 127 x 127mm AUD26.00 /pk/20 stock?
V112 Cellulose acetate 35µm thick, 150 x 100mm AUD42.00 /pk/20 stock?
V115 Triphan replicating sheets 100µm thick, 150 x 150mm AUD56.00 /pk/20 stock?

CELLULOSE ACETATE REPLICATING TAPES
Cellulose acetate tapes soften in acetone and can be applied to a surface which has been wetted with acetone. They are stripped off when dry. A thickness of 22µm is used for finer detail replication.
Roll/4.5m

V116-02225 Replicating tape, cellulose acetate, 22µm, 25mm wide AUD13.00 /roll stock?
V116-02238 Replicating tape, cellulose acetate, 22µm, 38mm wide AUD13.00 /roll stock?
V116-12525 Replicating tape, cellulose acetate, 125µm, 25mm wide AUD20.00 /roll stock?

SILICONE SEM REPLICATION KIT
The President SEM replication kit is a two component silicone based moulding material with excellent low viscosity forming properties for high definition of fine structures. Polymerisation time is only 5-7 minutes and moulds can be removed from samples directly after polymerisation to obtain a negative mold.
Applications can vary from replication of biological materials to achieve a stable surface or replication of processes like damage, wear or strain on large structures.
The President replication kit can be used easily in the field and replaces the need to use fixative on suitable biological material. The silicone moulds can be filled with Spurr to obtain a positive mould of the original surface and coated with Au or Au/Pd using a sputter coater. We advise to use Spurr since it has a low viscosity and provides excellent structure definition.
President replication kit yields good results with relatively long 10-30µm microstructures with aspect ratios from 1-20, and is capable of resolving small structures down to 20nm.

Kit contents:
53mL base, 53mL catalyst, 6 x 30mL mixing cups and 6 wooden stirring sticks.

Reference:
Visualization of native Surfaces by Two-Step Molding , Stanislav, N.Gorb, Microscopy Today 15/2 March 2007, Page 44-46 (pdf)



V120 President SEM high resolution replication kit AUD81.00 /kit stock?