University of the Free StateDepartment of Fisika Physics, A pictorial of growth and expansion

1. University of the Free State
Department of
A pictorial of growth and expansion

2. The beginning! - 1904

3. Taking it to the next level!

4. Seventies

5. Need space – go underground!

6. Great names to new Labs

7. Donations – Max Planck
2003

8. DST, NRF – RISP, NNEP and
NEP
2008-2016

9. New era

10. Team work

11. XPS – PHI Versaprobe 5400
NanoSAM – PHI 700

12. Expand your base!

15. Another system
TOF SIMS - Ion Tof

16. DST, NRF – Sarchi chair
2012

17. Growing too fast – Plan ahead and add
A WHOLE NEW BUILDING - 2015

25. New labs

27. Now to grow further with new equipment!!

30. New optical LABS ready for RESEACH!!

31. Photonics reaching
new heights
NLC - support

34. JSM-7800F FIELD EMISSION SEM, EDS AND CL

35. Astro suddenly
a force to recon with

36. A bright future awaits!

38. Total Publications by Year Sum of Times Cited by Year
Investment in teamwork
State of the art
equipment
Sarchi chair

39. Examples

40. -1
-0.5
0
0.5
1
0
0.5
1
1.5
-5.5
-5
-4.5
-4
-3.5
-3
x 10
-6
A STUDY OF STRIP ADHESION
• Computational Modeling (Theoretical)
• Segregation Study (Experimental)
Mittal
steel
Mintek
Sasol

41. August 2011Physics - UFS
Pt/Al - Nano metal phase for thin films

42. August 2011Physics - UFS
FOV: 16.7 µm 10.000 keV
PtAl 550CF
5.0 µm

43. GRAIN BOUNDARY DIFFUSION

44. PHOSPHORS
White light
LED
UV light
Phosphor
Semiconductor
diode
CRT Plasma/LCD/LED FEDs
incandescence
fluorescence
Thermal radiation
100 W - 17 lumens/W
Energy to visible
white light
2 %
11 W - 65 lumens/W
20 %
Energy to visible
white light 3 W - 130 lumens/W
45 %
Energy to visible
white light

45. Solar
Spectrum
Down/Up-
converter
Si solar cell
Shift
wavelength to
fit into Si
efficient part

46. August 2009Physics - UFS
Absorbing UV rays during the day
Emitting during the night
Long afterglow phosphors

47. 2.0 2.2 2.4 2.6 2.8 3.0
0
1
2
3
4
5
6
Frequency
Diameter of the nanoparticles (nm)
Average size= 2.39 nm
Size distrubution= 0.06 nm
2.6 2.8 3.0 3.2 3.4
0
1
2
3
4
5 Average size= 3.10 nm
Size distrubution= 0.05 nm
Frequency
Diameter of the nanoparticles (nm)
0 C 450 C
550 C
2.0 2.2 2.4 2.6 2.8 3.0
0
1
2
3
4
5
6
Frequency
Diameter of the nanoparticles (nm)
Average size= 2.39 nm
Size distrubution= 0.06 nm
2.6 2.8 3.0 3.2 3.4
0
1
2
3
4
5 Average size= 3.10 nm
Size distrubution= 0.05 nm
Frequency
Diameter of the nanoparticles (nm)
350 C 450 C
550 C
2.0 2.2 2.4 2.6 2.8 3.0
0
1
2
3
4
5
6
Frequency
Diameter of the nanoparticles (nm)
Average size= 2.39 nm
Size distrubution= 0.06 nm
4
5 Average size= 3.10 nm
Size distrubution= 0.05 nm
350 C 450 C
550 C
3 nm
2.4 nm
2 nm
2.0 2.2 2.4 2.6 2.8 3.0
0
1
2
3
4
5
Frequency
Diameter of the nanoparticles (nm)
2.6 2.8 3.0 3.2 3.4
0
1
2
3
4
5 Average size= 3.10 nm
Size distrubution= 0.05 nm
Frequency
Diameter of the nanoparticles (nm)
350 C
550 C
3.3 nm
3.1 nm
2.7 nm
solution-combustion methodNanotechnology 25 (2014) 135701
SnO2
HRTEM
combustion

48. Typical quantum-confinement-induced blue shift in
conduction-valence level energy gap with decreasing NC
diameter.
Temperature-broadened line profiles
Half-width points of a distribution of
particle sizes
AL Rogach et. al.

49. CIE diagram - BaMgF4:,Tb3+,Yb3+
Keeping Tb3+ at 2 mol % and
changing Yb3+ from 1 to 10 mol%
Keeping Yb3+ at 3 mol % and
changing Tb3+ from 0.1 to 3 mol%

51. Zn (red), Yb (green)
Positive mode
ZnO (red), Si (blue)
Negative mode

52. Si- (blue), ZnO- (red)
Si- (blue), ZnO- (red), O- (green)
YbO-
Si- (blue)
Er+

54. The People

55. T: +27(0)51 401 2926 | swarthc@ufs.ac.za | www.ufs.ac.za
Thank You
Dankie
This work is based on the research supported by the
South African Research Chairs Initiative of the
Department of Science and Technology and the
National Research Foundation of South Africa.