By Nu Nano Ltd.
Researchers at The Biophysical Imaging Centre in the Department of Physics and Astronomy at The University of Sheffield contacted NuNano with a specialist requirement for Torsional AFM probes. In Torsional Tapping mode, torsional oscillation of the cantilever is required, not ‘flexural’ oscillation as with standard tapping mode AFM. This can lead to increased lever sensitivity, quality factor and resonant frequency, as well as improved spatial resolution when scanning soft materials. Torsional AFM measurements require T-shaped cantilevers, with the tip displaced from the central cantilever axis, to allow torsional bending of the lever around the central axis during imaging. NuNano were able to design, manufacture and deliver T-shaped silicon cantilevers with silicon tips, ideal for use in torsional modes. “The process of getting from an idea to a functioning probe was really straightforward - we got quick, reliable answers for tolerances, specs, process limitations, timescales and cost. ” — Dr Nic Mullin, University of Sheffield
