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1st Speaker: Ms
Wong Choun Pei
Title: STM Monitoring of Single
Molecules
Abstract
The ability to probe and understand matter at its most fundamental
level is crucial to the field of nanoscience and nanotechnology. The
Scanning Tunneling Microscope (STM) was initially used primarily to
create nice pictures of surfaces. Later, the implementation of new
modes of scanning also enabled other experiments, including chemical
and spectroscopic measurements and manipulations to be carried out
on single molecules. Indeed, the field of single-molecule monitoring
using STM is very diverse. This project will look into the STM
topographic and spectroscopic measurements of single molecules.
Their principles, as well as some research work carried out in these
aspects will be reviewed.
2nd Speaker:
Mr Toh
Ping Yong
Title: X-ray Absorption
Spectroscopy
Abstract
X-ray absorption methods are used extensively to investigate the
electronic and chemical structure of materials, and the various
absorption techniques include Near Edge X-ray Absorption Fine
Structure (NEXAFS) and Extended X-ray Absorption Fine Structure (EXAFS).
These techniques utilise the absorption of x-rays by the atom and
from the x-ray absorption spectrum, we are able to find out many
details about the atoms and their neighbouring atoms.
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