Publications & Presentations

Text Book Chapters:

S.K. Das, H. Massaoudi, K. Dasari, W. Seeber, R. Grunwald, Femtosecond-laser induced nanostructures in TiO₂ in: M. Sakabe, C. Lienau, R. Grunwald (Eds.), “Progress in Nanolinear Nano-Optics”, Springer, pp73-84 (2014)

Publications:

1. “Strong Enhancement in the Photoluminescence of Yb-doped GaN and InGaN thin films”, K. Dasari, J. Wang, W.M. Jadwisienczak, V. Dierolf, R. Palai, J. Lumin., 209, 237-243 (2019)

2. “Role of Lattice Relaxation on the Dielectric and Magnetic Properties of Na Containing NiO”, S. Thota, A. Meher, D. Joshi, K. Warshi, K. Dasari, P. Pramanik, S. Ghosh, J. Phys. and Chem. Solids., 130, 154-164, (2019)

3. “Controlling the magnetic resonance properties of magnetic graphene oxide”, B. Thapa, D. Diaz-Diestra, D. Badillo-Diaz, R. Kumar Sharma, K. Dasari, S. Kumari, M. B. Holcomb, J. Beltran-Huarac, B. R. Weiner, and G. Morell, Scientific Reports, 9:5633, (2019)

4. “Neutron diffraction study of the inverse spinels Co₂TiO₄ and Co₂SnO₄”, S. Thota, M. Reehuls, A. Malijuk, A. Hoser, J.-U. Hoffmann, B. Weise, A. Waske, M. Krautz, D.C. Joshi, S. Nayak, S. Ghosh, P. Suresh, K. Dasari, S. Wurmehl, O. Prokhnenko, and B. Buchner, Phys. Rev. B, 96, 144104, (2017)

5. “Magnetic Exchange Interactions and Dielectric Studies of Zn_1-xNi_xO-NiO Composites”, D.C. Joshi, P. Pramanik, S. Nayak, K. Dasari, R.J. Choudhary, and S. Thota, J. Phys. D: A. Phys., 50, 325002 (2017)

6. “Growth, luminescence, and magnetic properties of GaN:Er semiconductor thin films grown by molecular beam epitaxy”, K. Dasari, J. Wu, H. Huhtinen, W.M. Jadwisienczak, and R. Palai, J. Phys. D:Appl. Phys., 50, 175014 (2017)

7. “Photoluminescence studies and crystal field calculations of Yb-doped InGaN Nanorods”, Z. Yahiaoui, T. Kallel, T. Koubaa, M. Dammak, K. Dasari, R. Palai, J. Wang, W.M. Jadwisienczak, J. Mat. Sci. Engg. B, 222, 26-33 (2017)

8. “Magnetodielectric coupling in Ferromagnetic/Ferroelectric/Ferromagnetic spin capacitor”, F. Aponte, R. Masso, K. Dasari, G. Sreenivasulu, F. Srinivasan, R. Palai, MRS advances, (2017)

9. “Low-temperature anomalous magnetic behavior of Co₂TiO₄ and Co₂SnO₄”, S. Nayak, K. Dasari, D.C. Joshi, R. Palai, S. Thota, P. Pramanik, A. Waske, T. Sarkar, J. Appl. Phys., 120, (16) 163905 (2016)

10. “Spectroscopic studies of Co₂TiO₄ and Co₃O₄ two-phase composites”, S. Nayak, K. Dasari, D.C. Joshi, P. Pramanik, R. Palai, V. Sathe, S. Thota, Phys. Stat. Sol. (b), 253, 2270-2282 (2016)

11. “MBE grown In_xGa_1-xN thin films with bright visible emission centered at 550 nm”, K. Dasari, B. Thapa, J. Wang, J. Wright, S. Kaya, W.M. Jadwisienczak, R. Palai, J. Electr. Mater. 45, 2071-2077 (2016)

12. “Localized charge carrier transport properties of Zn_1-xNi_xO/NiO two-phase composites”, D.C. Joshi, K. Dasari, S. Nayak, R. Palai, P. Suresh, S. Thota, J. Electron. Mater., 45, 2059-2065 (2016)

13. “Visible photoluminescence and room temperature ferromagnetism in high In-content InGaN:Yb nanorods grown by molecular beam epitaxy”, K. Dasari, J. Wang, M. J-F Guinel, W.M. Jadwisienczak, H. Huhtinen, R. Mundle, A.K. Pradhan, R. Palai, J. Appl. Phys., 118, 125707 (2015)

14. “Improved thermal stability and narrowed line width of photoluminescence from InGaN nanorod by ytterbium doping”, J. Wang, K. Dasari, K. Cooper, V.R. Thota, J. Wright, R. Palai, D.C. Ingram, E.A. Stinaff, S. Kaya, and W.M. Jadwisienczak, Phys. Stat. Sol.(c), 12, 413-417 (2015)

15. “The shift of optical bandgap in W-doped ZnO with oxygen pressure and doping level”, J. Chu, X.Y. Peng, K. Dasari, R. Palai, P. Feng, J. Mat. Res. Bull., 54, 73-77 (2014)

16. “Electrical conductivity and photo resistance of atomic layer deposited Al-doped ZnO films”, R.M. Mundle, H.S. Terry, K. Santiago, D. Shaw, M. Bahoura, A.K. Pradhan, K. Dasari, and R. Palai, J. Vac. Sci. Technol. A, 31, 01A146 (2013)

17. “Extended-area nanostructuring of TiO₂ with femtosecond laser pulses at 400 nm using a line focus”, S. K. Das, K. Dasari, A. Rosenfeld, and R. Grunwald, Nanotechnology, 21, 155302 (2010)

18. “Generation of extended-area femtosecond laser induced periodic nanostructures on TiO₂ by moving samples through a line focus”, K. Dasari, S. K. Das, A. Rosenfeld, and R. Grunwald, Proc. SPIE, 7586, 75860K (2010)

19. “Room temperature frequency dependent dielectric properties of Dy-doped BiFe₂O₃”, K. Dasari, R. Martinez, R. Palai, and R. Katiyar (under preparation)

20. “Structural and Optical properties of Pulsed Laser Deposited Cadmium Selenide thin films” Flavia P. N. Inbanathan, Mohammad Ebdah, Pawan Kumar, Kiran Dasari, Ram S Katiyar, Wojciech M. Jadwisienczak (under preparation)

Highlights:

On femtosecond laser induced nanoripples in TiO₂:

http://nanotechweb.org/cws/article/lab/42579

Invited talks & presentations:

Invited talks: Oral presentation Oral presentation on “Femtosecond laser induced nanoripples in TiO₂” in workshop on “ZnO & TiO₂ nanostructures” July 9, 2009 at Max-Born institute, Berlin, Germany

Other oral and poster presentations:

1. Md. S. Reza, K. Dasari, M. Wistey, “Strained Germanium Waveguide Simulations for Active Silicon Photonics”, APS Spring Meeting, March 2019 Nacogdoches, TX, USA
2. K. Dasari*, J. Wang, Z. Yahyaoui, M. Dammak, W.M. Jadwisienzak, V. Dierolf, R. Palai, “Effects of Rare Earth Ions on the Optical Properties of High Indium Content InGaN”, MRS-Fall (2016) Boston, MA, USA (oral)
3. F. Aponte, R. Masso, K. Dasari, G. Srinivasan, G. Sreenivasulu, R. Palai, “Magnetodielectric coupling in Ferromagnetic/Ferroelectric/Ferromagnetic spin capacitor”, MRS-Fall (2016), Boston, USA (Oral)
4. S. Nayak, K. Dasari*, D. C. Joshi, V. Sathe, R. Palai, R. S. Katiyar, and S. Thota, “Temperature dependence of micro-Raman spectroscopy of Co₂TiO_4, Co₃O₄ and their composites”, MRS-Fall (2016) Boston, MA, USA (accepted for poster)
5. S. Thota, K. Dasari*, S. Nayak, D.C. Joshi, P. Pramanik, A. Waske, T. Sarkar, M. Anderson, and R. Mathieu, “Low-temperature anomalous magnetic behavior of Co₂TiO₄”, IEEE International Conference on Microwave Magnetics-16, June 5-8 (2016), Tuscaloosa, AL, USA
6. K. Dasari*, J. Wang, W. M. Jadwisienzak, V. Dierolf, R. Palai, “Effects of Rare Earth Ion (Er and Yb) Doping on the Growth, Structural, Optical, and Magnetic Properties of High Indium Content InGaN in Visible Range”, Electronic Materials Conference-16, June 21-24 (2016), Newark, DE, USA
7. J. Wang, K. Dasari, R. Palai, W. M. Jadwisienczak*, “The role of ytterbium in growth of InGaN NRs with High Indium Content by MBE”, WOFE & WMN, Dec 15-18, (2015), San Juan, PR, USA
8. K. Dasari*, J. Hernandez, J. Wang, W. Jadwisienzak, L. Fonseca, and H. Huhtinen, R. Palai, “Structural, optical and magnetic properties of transition metal (Mn, Co, Ni) implanted highly crystalline GaN thin films grown by MBE”, WOFE & WMN, Dec 15-18, (2015), San Juan, PR, USA
9. D. C. Joshi, K. Dasari*, S. Nayak, P. Pramanik, P. Suresh, R. Palai and S. Thota, “Effect of Na-doping on the structural, dielectric and electronic characteristics of wide band gap NiO”, WOFE & WMN, Dec 15-18, (2015), San Juan, PR, USA
10. K. Dasari*, W. Jason, J. Wang, S. Kaya, W. M. Jadwisienczak, R. Palai, “Structural and Optical Properties of High In-Content InGaN Nanocolumns Grown at Higher Temperatures for Visible Range Applications”, MRS Fall meeting, Nov 29-Dec 04, (2015), Boston, MA, USA (oral presentation)
11. K. Dasari*, B. Thapa, J. Wang, W. M. Jadwisienczak, R. Palai, “Growth Dynamics, Micro-Structural, and Optical Properties of High Indium Content InGaN Thin Films Grown at High Temperatures for Visible Applications”, Electron. Mater. Conf., MRS, June 24-26, (2015), Columbus, OH, USA
12. B. Thapa, K. Dasari*, J. Santillan, J. Wang, W. Jadwisienczak, R. Palai, “MBE Grown self-catalyzed Epitaxial In_xGa_1-xN (0.1x0.26) nanowires”, Electron. Mater. Conf., MRS, June 24-26, (2015), Columbus, OH, USA
13. Deep C. Joshi, K. Dasari*, Suresh Pittala, Sanjib Nayak, and Subhash Thota, “On the Localized Charge Carrier Transport Properties of ZnNiO/NiO (0.3x1) two-Phase Composites”, Electron. Mater. Conf., MRS, June 24-26, (2015), Columbus, OH, USA
14. W.M. Jadwisienczak*, J. Wang, K. Dasari, V.R. Thota, R. Palai, Eric A. Stinaff, “Optical and magnetic studies of InGaN nanorods doped with ytterbium”, SPIE Photonics west-opto, Feb 7-12, 2015, San Francisco, CA, USA (oral presentation)
15. K. Dasari*, B. Thapa, M. Guinel, W.M. Jadwisienczak, H. Huhtinen, and R. Palai, “Growth, and Characterization of Er doped In_1-xGa_xN thin films”, Workshop on Multifunctional Nanomaterials, Jan 14-16, 2015, San Juan, PR, USA
16. B. Thapa*, K. Dasari, H. Huhtinen, J. Wang, W.M. Jadwisienczak, and R. Palai, “Structural, electrical and luminescence properties of tantalum oxynitride thin film”, Workshop on Multifunctional Nanomaterials, Jan 14-16, 2015, San Juan, PR, USA
17. W.M. Jadwisienczak*, J. Wang, H. Tanaka, K. Dasari, R. Palai, M.J. Guinel, and H. Huhtinen, “Photoluminescence and ferromagnetic properties of High In-content InGaN:Yb nanorods and epilayers by MBE”, 5^th International Symposium on Growth of III-Nitrides, May 18-22. 2014, Atlanta, GA, USA
18. K. Dasari*, B. Thapa, J. Wang, W.M. Jadwisienczak, H. Huhtinen, A.K. Pradhan, and R. Palai, “Growth, structural, and optical properties of InGaN:RE/GaN heterostructures”, Workshop on Frontiers in Electronics-2013 (WOFE-13), San Juan, PR, USA
19. K. Dasari*, M. Guinel, J. Wang, W.M. Jadwisienczak, H. Huhtinen, A.K. Pradhan, R. Palai, "Growth, Structural, and Optical Properties of the Rare Earth (Yb³⁺ and Er³⁺) Doped In_1-xGa_xN Thin Films", 10^th International Conference on Nitride Semiconductors (ICNS-10) 2013, Washington DC, USA
20. J. Wang*, K. Dasari, R. Palai, W.M. JAdwisienczak, "Luminescent properties of high indium content InGaN epilayers in-situ doped Yb and Er", 10^th International Conference on Nitride Semiconductors (ICNS-10), 2013, Washington DC, USA
21. K. Dasari*, R. Palai*, W. M. Jadwisienczak and H. Huhtinen, “In situ growth process monitoring by RHEED and magnetoptic properties of epitaxial GaN:Er thin fims”, 21^st ECS meeting, 2012, Seattle, WA, USA (oral)
22. K. Dasari*, J. Wu, H. Huhtinen, W.M. Jadwisienczak and R. Palai, “Real Time Growth Process Monitoring and Magneto-optic Properties of GaN:Er Thin Films”, Workshop On Frontiers in Electronics-2012, San Juan, PR, USA (oral)
23. K. Dasari*, W.M. Jadwisienczak, H. Huhtinen, R. Palai, “Magnetic and opto-electronic properties of rare earth doped GaN thin films”, 12^th Magnetism and Magnetic Materials-2013, Chicago, IL, USA (accepted for poster)
24. R. Martinez*, K. Dasari, N. Ortega, A. kumar, R. Palai and R. Katiyar, “Crystal Structure and Multiferroic Properties of the 0.7(BaTiO₃)-0.3(Bi_0.45Dy_0.55FeO₃) System”, APS, March-2011, Dallas, TX, USA
25. K. Dasari*, R. Acevedo, J. Wu, W. M. Jadwisienczak, H. Huhtinen, and R. Palai, “Electrical and magnetic properties of GaN:Er thin films”, MRS-spring meeting, 2011 San Francisco, CA, USA, (oral)
26. S. K. Das, M. Rohloff, A. Rosenfeld, K. Dasari, J. O. Bonse, A. Pfuch, W. Seeber, and R. Grunwald, “Review on parameters controlling LIPSS formation in TiO₂ single crystal and thin films”, Technical Digest, 2^nd Int. Workshop Nonlinear Nanostructures for Ultrafast Laser Application, May 19-20, 2011, Berlin, Germany
27. M. Rohloff, A. Richter, K. Dasari, R. Hertmanowski, S. K. Das, A. Rosenfeld, and R. Grunwald, “Nano-indentation study of femtosecond laser induced periodic surface structures on dielectrics and semiconductors”, 2^nd Int. Workshop Nonlinear Nanostructures for Ultrafast Laser Application, Technical Digest, May 19-20, 2011 Berlin, Germany