Automatic target location strategy - A novel approach in scanning electrochemical microscopy

In this article a recently constructed scanning electrochemical microscope with an original automatic target location facility is described and its op eration is demonstrated on different targets. The measuring tip positioning device is based on stepper motor driven linear modules with 75 nm linear t ravel resolution. The home-built electronic unit and the Windows 95 compati ble measuring and image-forming program furnish the microscope to operate i n both amperometric and potentiometric modes. A novel, simplex algorithm ba sed automatic target location program was developed to substitute the tedio us and lengthy manual tip positioning. In this article different strategies are described and the most important results of this investigation are sum marized.