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Scanners

MAC Mode

฀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 M฀C 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. M฀C 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 M฀C 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.

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