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Professor Christian Kloc
Email: ckloc@ntu.edu.sg
Phone: (+65) 6790 4716
Office: N4.1-01-17
Current
Research Interests
The world around us is made
of atoms. The nature of the atoms
(or most of them) is to bond
together forming small groups, which
we call compounds or molecules.
Atoms are very small. One cubic
millimeter contains more than many
billions of atoms. They can be
placed there randomly as tomatoes in
a vegetable bin, or they can be
arranged in neat layers and pyramids
like oranges or grapefruits on a
village market stall. Such an
arranged form made of atoms is very
valuable for solid state physics and
has its own name, which is crystal.
My job is arranging these atoms or
molecules into crystals. Most of the
crystals that I am growing (growing
is the verb used to describe the
atom-arranging process) do not
appear in nature. However, the
properties resulting from this
arrangement can be explained or even
modeled by the rule of nature, which
we who are involved in research like
to call the rules of physics.
Sometimes, the properties resulting
from the interactions of elements
surprise us and we need a long time
to understand and incorporate the
emerging new properties back inside
the framework of physics. Sometimes,
physicists, chemists or biologists
predict strange structures with even
stranger properties. Then crystal
growers try to build the structures
from simple elements taken from the
periodic table. Sometimes the
fabrication of new material is so
complex that we exaggerate and say
that crystal growth is more art than
science. But crystals possess an
inner beauty all their own, which
can be seen under very strong
magnification in an electron
microscope, under a medium
magnification in an optical
microscope, or, in the largest
specimens, with naked eye. I think
that these artificial
entities--crystals-- have their own
inner esthetic and can not only be
objects of scientific studies, but
also invoke esthetic feelings.
In conclusion, I share my enthusiasm for
crystals with others--chemists who
synthesize the awesome molecules,
physicists who measure the bizarre
properties and biologists who explain
the role of molecules in life. Moreover,
for all we know the humble crystal, so
important for research, may also inspire
a whole new body of artistic endeavor..
Biographical
Information
2007 Professor, Nanyang
Technological University, School of
Materials Sciences and Engineering,
Singapore
1998 - 2007, Member of Technical
Staff, Bell Laboratories, Lucent
Technologies, Murray Hill, NJ, USA
1986 - 1998, University of Konstanz,
Department of Physics, Konstanz,
Germany (with Prof. E.Bucher)
1982/83 Technical University of Braunschweig, Germany, postdoc, DAAD
scholarship (with Prof. R. Lacmann)
1983 Ph.D. Polish Academy of
Sciences, Institute of Physics,
Warsaw, Physics
1973 - 1986, Researcher, Senior
Researcher, Adjunct, Polish Academy
of Science, Institute of Solid State
Physics, Zabrze Poland (with Prof.
W. Zdanowicz)
1969 - 1974, Silesian Technical
University, Gliwice, Poland,
Chemistry
Teaching
- MS4525
Materials and Energy
Selected
Publications
O. Mitrofanov, D. V. Lang, C. Kloc,
J. M. Wikberg, T. Siegrist, W.-Y. So, M.
A. Sergent, and A. P. Ramirez,
"Oxygen-related Band Gap State in Single
Crystal Rubrene" Phys. Rev. Let. 97,
2006, 166601.
R. Zeis, T. Siegrist, C. Kloc,
"Single-crystal field-effect transistors
based on copper phthalocyanine, Appl.
Phys. Ltters 86, 2005, 022103.
V. Podzorov, M. E. Gershenson, Ch. Kloc,
R. Zeis, and E. Bucher, “High-mobility
field-effect transistors based on
transition metal dichalcogenides, Appl.
Phys.Letters 84, 2004, 3301.
B.D.Chapman, A.Checco, R.Pindak,
T.Siegrist and C.Kloc, "Dislocations and
Grain Boundaries in Semiconducting
Rubrene Single-Crystals" J. Crystal
Growth 290 (2006) 479.
R.A.Laudise, Ch.Kloc, P.G.Simpkins, and
T.Siegrist, “Physical Vapor Growth of
Organic Semiconductors” J.Crystal
Growth, 187(1998)449.
Ch.Kloc, P.G.Simpkins, T.Siegrist, and
A.R.Laudise, „Physical Vapor Growth of
Centimeter Sized Crystals of -Hexathiophene“
J. Crystal Growth 182(1997)416-427.
K. Kloc and W. Zdanowicz, "Growth and
Morphology of Zn3P2, Cd3P2 and Cd3As2
Crystals", J.Crystal Growth 66(1984)451.
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