[Spm] Problems with the direct drive liquid cell for Dimension 3100

[Gerard Oncins]

Hi all,
we recently bought a direct drive liquid cell for a Dimension 3100 
system. It is the tip holder that integrates the tip dirving piezo for 
tapping mode. It works fine in air but when we use it in liquid we have 
to drive it up to 5000mV in order to get a resonance peak (and a very 
bad one). Then, turning on the Z modulation and driving the tip with the 
scanner piezo, the peak improves slightly but keeps on being useless. 
Please, any of you have experienced similar problems and knows any way 
to overcome it?

Thanks in advance

-- 
Gerard Oncins

Scientific-technical Services
Nanometric Techniques Unit
University of Barcelona

Soler i Sabaris 1
08028 Barcelona (Spain)
phone: +34 93 402 1352
fax: +34 93 402 1398