From my personal experience I know gold and platinum work well. We have a paper in Langmuir that uses Tungsten microwires as a substrate and electrodeposits gold and platinum. The paper was for wires so if you want to deposit on a chip, you may have to adapt the procedure a bit. Conical Tungsten Tips as Substrates for the Preparation of Ultramicroelectrodes. Langmuir, 22 (25), 10348 -10353, 2006. Best, -Richard Richard B. Keithley UNC Analytical Chemistry Graduate Student & National Defense Science and Engineering Graduate Fellow Wightman Research Group Chapel Hill, NC 27599 919-962-1108 Quoting Andrea Mazzolari: > Hi all, > > i need to deposit about 20um of any metal on tungsten. > Could someone suggest a metal which have good adhesion to tungsten and an > appropriate deposition technique ? > > For my understanding Titanium deposited by electrodeposition should work > fine, but i don't have a big experience.