4
Introduction
This manual gives instructions on how to set up and use your Nanosurf
easyScan E-STM system.The aim is to help people who don’t have a good
knowledge of physics to get pictures of atomic resolution easily.This intro-
duction chapter gives some general information on the scanning tunneling
microscopy technique, and its implementation in the easyScan STM. The
next chapter, (Un)packing and Installation, should be read when installing
your easyScan system. The chapters Preparing for Measurement and First
Measurementsshouldbe readbyallusers,astheycontainusefulinstructions
for your everyday measurements. The other chapters give more informa-
tion for advanced users.Those who need a more detailed description of the
functions of the easyScan software should refer to the Software Reference
manual.
What is STM?
Microscopy is one of the most exciting scientific techniques. The insight
into small dimensions has led to a new understanding of the structure of
materials and forms of life.
Withthehelp ofthe scanningtunneling microscope(STM) itis possible to
look into the fascinating world of the atoms.This completely new micros-
copy technique works without focusing elements and features atomic reso-
lution (laterally and vertically).
The Scanning Tunneling Microscope was developed by Gerd Binnig and
Heinrich Rohrer in the early 80’s at the IBM research laboratory in
Rüschlikon, Switzerland. For this revolutionary innovation Binnig and
Rohrer were awarded the Nobel prize in Physics in 1986.
In the STM, a small sharp conducting tip is scanned across the sample’s
surface, so close that the so-called ‘tunneling current’ can flow. With the
helpofthatcurrentthetip-surfacedistancecanbecontrolledvery precisely.
Therefore an enormous resolution is achieved so that the atomic arrange-
ment of metallic surfaces can be ‘probed’.
INTRODUCTION WHAT IS STM?
