gilent’s open- and closed-loop scanners (two ranges available: 90µm x 90µm, or 8µm x 8µm) offer outstanding linearity, accuracy, versatility, and ease of use. These multipurpose, top-down scanners are ideal for imaging in luids or air and under controlled temperature and environmental conditions. To deliver high-resolution imaging results, a balanced-pendulum design is utilized that eliminates artifacts in the image by keeping the relative position of the laser spot ixed in relation to the cantilever throughout the scan cycle.
gilent’s patented MC Mode provides the industry’s best performance for imaging in luids and imaging soft samples, allowing researchers to image submolecular structures that cannot be resolved with any other FM technique. MC Mode is particularly useful in application areas that require high resolution and force sensitivity, such as biology, polymers, and surface science. C mode is included with MC Mode.
STM scanners (8µm x 8µm, or 1µm x 1µm) are also available for use with the 5500. gilent’s STM scanners deliver excellent results on a variety of conducting materials. These low-current and ultra-low- current STM scanners provide stable imaging at pico-ampere and sub-pico-ampere currents to resolve individual atoms and molecules. STM scanners take advantage of the extreme distance sensitivity of the tunneling current between two conducting electrodes. By measuring the tunnel-current variations as a probe is scanned over a sample’s surface, STM is able to deliver the highest-resolution SPM images.
Open access to the scanner and easy alignment of optics help simplify use of the 5500. In addition, easy-to-load scanner nose cones make switching imaging modes quick and convenient. The nose cones are made from PEEK polymers, have low chemical reactivity, and can be used in a wide range of solvents. Their easy interchangeability provides tremendous lexibility.
Figure 2. AFM images of normal alkanes on graphite obtained in amplitude modulation mode.