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Creative Biostructure offers professional scanning tunneling microscopy (STM) technology with state-of-the-art instrumentation, which is applied for imaging surfaces at the atomic level resolution. STM is the ancestor of all atomic force microscopes (AFM). The operation of STM and conductive AFM is identical, except that a sharpened and conducting wire/tip, instead of a conductive AFM cantilever, is used in STM.
STM measures the topography of surface electronic states using a tunneling current that is dependent on the separation between the probe tip and a sample surface. STM is typically performed on conductive and semiconductive surfaces. Common applications consist of atomic resolution imaging, Scanning Electrochemical Potential Microscopy (SECPM), and low current imaging of less conductive samples.
Figure 1. Schematic view of an STM.
When the resolution capabilities of the STM became evident, the possibility of examining biological structure in such detail was obvious and exciting. Although much of the excitement arose from the STM's ability to image objects at the atomic and molecular scale, the STM also emerges as a singular device for mapping and measuring three-dimensional surface profiles of objects in the range from 0.01 to 10 µm.
If you are interested in our scanning tunneling (STM) service, please do not hesitate to contact us for more information.