Feedback and control theory are important ideas that should form part of the education of a
physicist but rarely do. This tutorial essay aims to give enough of the formal elements of …

Atomic force microscopy (AFM) can visualize functional biomolecules near the physiological
condition, but the observed data are limited to the surface height of specimens. Since the …

We identify the dynamics of a scanning tunneling microscope (STM) in closed loop and
show that the plant dc gain is proportional to the square root of local barrier height (LBH), a …

A common cause of tip-sample crashes in a Scanning Tunneling Microscope (STM)
operating in constant current mode is the poor performance of its feedback control system …

The loop gain in feedback control system of a Scanning Tunneling Microscope (STM) is
proportional to a quantum mechanical property of the STM tip and sample, known as the …

In this article, we present a novel method for decoupling surface electronic properties from
topographic surface variations in scanning tunneling microscope (STM). In a conventional …

Low scanning speed of piezo-probes has been a fundamental limitation of scanning probe
based nano-fabrication techniques. Typical scan-rates achieved are limited, by structural …

The scanning tunneling microscopy (STM) feedback system is analyzed to look for the
optimal conditions for measurement. The typical feedback circuit normally used in STM and …

This paper is devoted to the digital control system design for high performance
measurement of tunneling current. A common approach for such applications is to use a …

Control system of a Scanning Tunneling Microscope is analyzed. For the aim of model-
based control system analysis and design, open-loop model of the plant is obtained based …