1. Cheng Ji
Ch Ji
Department of Mechanical Engineering
Writing for Publication term presentation
Instructor: Dr. Baehr
May. 2. 11
y

2. Overview
 Brief introduction of high pressure
science
 Article topic
 Findings
g
 Publication venue
 Learning of academic writing

3. Pressure scale

4. Astonishing phenomena under
Astonishing phenomena under
extreme conditions
1. Transforming graphite to diamond
gg p

5. Pressure induced superconducting

6. Next
 Brief introduction of high pressure
science
 Article topic
 Findings
g
 Publication venue
 Learning of academic writing

7. Topic
 St d th h t
Study the phase transition of silver halide (AgCl) by
iti f il h lid (A Cl) b
Raman scattering spectroscopy and synchrotron X‐ray
diffraction (XRD) in a diamond anvil cell to 50 GPa.
diffraction (XRD) in a diamond anvil cell to 50 GPa

8. Why interesting
y g
 High Energy Density Material in form of polymeric
nitrogen.
nitrogen
 Unknown pressure induced phase transition.
 Evidence for theoretical study of “molecular crystals”.
Evidence for theoretical study of molecular crystals
 Further understanding phase transition dynamics of
crystal with linear anions.

9. Next
 Brief introduction of high pressure
science
 Article topic
 Findings
g
 Publication venue
 Learning of academic writing

10. Phase transition
 A phase transition happen at 13.6~15.5 GPa.

11. Indications on structure of the new phase
Indications on structure of the new phase
Splitting of
librational modes
indicates a
rotation of
anion chains.
Appearance of IR active modes
A f IR ti d
suggests a vanishing of
inversion center.
inversion center

12. No polymeric nitrogen found
No polymeric nitrogen
formed in the new phase.
The new phase is still in a
molecular state indicated by
the preserving of these two
stretching vibrational modes.
t t hi ib ti l d

13. Anisotropic compressibility
Anisotropic
compressibility with
greater compressibility
in the direction
perpendicular to the
plane containing N3‐
anions than directions
h d
within that plane.

14. Next
 Brief introduction of high pressure
science
 Article topic
 Findings
g
 Publication venue
 Learning of academic writing

15. Journal of Applied Physics
Scope: Significant new results that
e p as e u de sta d g o t e p ys cs
emphasize understanding of the physics
underlying modern technology.
Impact factor: 2.072 (2009)
Association: American Institute of
Physics .
Reason to select: There is a special
issue for the 6th SMEC (Study of
Materials under Extreme Conditions)
conference which heavily focuses on
high pressure investigations.
hi h i i i

16. Next
 Brief introduction of high pressure
science
 Article topic
 Findings
g
 Publication venue
 Learning of academic writing

17. Learns
 Important to analyze venues.
 Never be waiting till everything is clear to start writing
Never be waiting till everything is clear to start writing.
 My writing logic should be more straight forward.
I t
Intensive revision is extremely important and necessary.
i i i i t l i t t d
 Seek all possible helps to improve, never be shy.

18. Questions?
Comments?
Thank you!