Publications

36. "Blue Liquid Lasers from Solution of CdZnS/ZnS Ternary Alloy Quantum Dots with Quasi-Continuous Pumping" Yue Wang, Kheng Swee Leck, Van Duong Ta, Rui Chen, Venkatram Nalla, Yuan Gao, Tingchao He, Hilmi Volkan Demir, and Handong Sun, Adv. Mater.  27 (1),169-175 (2015). "QuantumDots: Blue Liquid Lasers from Solution of CdZnS/ZnS Ternary Alloy Quantum Dotswith Quasi-Continuous Pumping (Adv. Mater. 1/2015)" Yue Wang, Kheng Swee Leck, Van Duong Ta, Rui Chen, Venkatram Nalla, Yuan Gao, Tingchao He, Hilmi Volkan Demir, and Handong Sun, Adv. Mater.  27 (1), 168 (2015).

28. "Charge transfer assisted nonlinear optical and photoconductive properties of CdS-AgInS2 nanocrystals grown in semiconducting polymers" Venkatesh Mamidala*,Venkatram Nalla*, Pradipta Sankar Maiti, Suresh Valiyaveettil, and Wei Ji, (* These authors contributed equally to this work) J. Appl. Phys.113,123107 (2013), (Virtual Journal of Laser, 2013).

27. " Synthesis of C60-Antenna Nanostructure-Based Fullerosome Vesicles for Ultrafast Nonlinear Photonic Applications" Min Wang, Taizoon Canteenwala, Venkatram Nalla, Loon-Seng Tan, Wei Ji and Long Chiang, ECS Transactions, 45 (20), 3-14 (2013).

26. “High-Performance Broadband Photodetector Using Solution-Processible PbSe–TiO2–Graphene Hybrids” Kiran Kumar Manga, Junzhong Wang, Ming Lin, Jie Zhang, Milos Nesladek, Venkatram Nalla, Wei Ji, and Kian Ping Loh, Adv. Mater. 24 (13), 1697– 1702, (2012).

14. “Ultrafast nonlinear optical properties of alkoxy-phthalocyanine nanoparticles investigated using Z-scan technique” S. Venugopal Rao, N. Venkatram,  L. Giribabu, and D. Narayana Rao,  J. Appl. Phys.105, 053109 (2009), (Virtual journal of ultra fast science, V-8, Issue-4, 2009).

13. “Influence of non-stoichiometric defects on nonlinear absorption and refraction in Nd:Zn co-doped lithium niobate”, J.N. Babu Reddy, Suja Elizabeth, H.L. Bhat, N. Venkatram, and D. Narayana Rao, Opt. Mater. 31 (6),  1022–1026 (2009).

12. “Nonlinear optical and optical limiting studies of alkoxy phthalocyanines in solutions studied at 532 nm with nanosecond pulse excitation” N. Venkatram, S. Venugopal Rao, L. Giribabu, and D. Narayana Rao,  Applied Physics B, 91, 149-156 (2008), (Virtual Journal of Laser, 2008), (Journal of India, May, 2008).

11. “Au+ ion-beam irradiation effects on Optical properties of CdSe and CdS quantum dots” N. Venkatram, T. Reddeppa, R. Sathyavathi, Umananda M Bhatta, P. V. Satyam, and D. Narayana Rao, Nuclear Inst. and Methods in Physics Research B, 266 (8) 1816-1819 (2008). Nanotechnology Business Journal.

10. “Multi-photon absorption in CsLiB6O10 with femtosecond infrared laser pulses”Babu Reddy J. N., Vinayak B. Naik, Suja Elizabeth, H.L. Bhat, N. Venkatram, and D. Narayana Rao  J. Appl. Phys.104, 053108 (2008), (Virtual journal of ultra fast science, V-7, Issue-10, 2008), (Virtual Journal of Laser, 2008).

9. “Optical Limiting in Organic Molecular Nano/Microcrystals: Nonlinear Optical Effects Dependent on Size Distribution” A. Patra, N. Venkatram, D. Narayana Rao and T. P. Radhakrishnana, J. Phys. Chem. C, 112,  16269-16274 (2008).

8. “Femtosecond nonlinear optical properties of alkoxy phthalocyanines studied using Z-Scan technique”, N. Venkatram, D. Narayana Rao, L. Giribabu, and S. Venugopal Rao, Chem. Phys. Lett.464, 211-215 (2008).

7. “In situ Synthesis of Metal Nanoparticles in Polymer Matrix and Optical Limiting Application” S. Porel, N. Venkatram, D. Narayana Rao, and T. P. Radhakrishnan, J. Nanosci. Nanotechnol.7, no.6, 1887–1892 (2007).

6. “Optical Power Limiting in the Femtosecond Regime by Silver Nanoparticle –Embedded Polymer Film” S. Porel, N. Venkatram, D. Narayana Rao and T. P.Radhakrishnana, J. Appl. Phys.102, 033107 (2007), (Virtual journal of ultra fast science, V-6, Issue-9,  2007).

5. “Fluorescence enhancement of CdSe Q-Dots with intense femtosecond laser irradiation” D. Narayana Rao and, N. Venkatram, Journal of Fluorescence, 17, 607–611 (2007).

4. “Size dependent multiphoton absorption and refraction of CdSe nanoparticles” N. Venkatram, R. Sathyavathi, and D. Narayana Rao, Optics express, 15, 12258-12263 (2007). (Virtual journal of medical opticsV-2, Issue-10, 2007 ). (Virtual journal of ultra fast science, V-6, Issue-11, 2007).

3. “Nonlinear Optical Absorption and Switching Properties of Gold Nanoparticle Doped SiO2–TiO2 Sol–Gel Films” N. Venkatram, R. Sai Santosh Kumar, S. K. Medda, Sucheta De,Goutam De, and D. Narayana Rao, J. Nanosci. Nanotechnol.6, no.7, 1990–1994 (2006).

2. “Nonlinear absorption and scattering properties of cadmium sulphide nanocrystals with its application as a potential optical limiter” N. Venkatram, R. Sai Santosh Kumar, and D. Narayana Rao, J. Appl. Phys.100, 074309 (2006). (Virtual journal of nanoscale science & Technology, V-14, Issue-17, 2006), (Virtual journal of ultra fast science, V-5, Issue-11, 2006).

1. “Nonlinear absorption, scattering and optical limiting studies of CdS nanoparticles” N. Venkatram, M. A. Akundi, and D. Narayana Rao, Optics express,13, 867-872 (2005), (Virtual journal of nanoscale science & Technology, V-11, Issue-18, 2005). 

Patents filed:

1. "Laser Patterning of Graphene/ Graphene-oxide Schottky Junction for Photoconductive and Photovoltaic Applications" US, 61/515,380, Sep 2011, Ji Wei, Wee ATS, Chen Wei, Venkatram Nalla, Ram Sevak Singh.

Acknowledged Journal papers:

7.  "Nonlinear optical properties, upconversion and lasing in metal–organic frameworks", Raghavender Medishetty,  Jan K. Zaręba,  David Mayer,  Marek Samoć and  Roland A. Fischer, Chem. Soc. Rev.,  46, 4976-5004 (2017).  

6. "Ruthenium(II)–terpyridine complexes-containing glyconanoparticles for one- and two-photon excited fluorescence imaging", Li Qun Xu, European Polymer Journal, 71, 279–288 (2015).

5. "Two-Photon Absorption in Graphene Enhanced by the Excitonic Fano Resonance", Weiqiang Chen, Yu Wang , and Wei Ji, J. Phys. Chem. C, 119 (29), 16954–16961 (2015).

4. "Absorption Saturation and Two-Photon Absorption in Graphene", Chen, W., Wang, Y., & Ji, W. MRS Proceedings, 1698 (2014).

3. "Progress in Nonlinear Optics", D. Narayana Rao, Physics News, 40, 53 (2010).

2. "Growing Molecular Crystals on Inorganic Crystals: Polar Structure Induced by Noncentrosymmetric Templates", M. Jaya Prakash, Pallepogu Raghavaiah, Y. S. R. Krishna, and T. P. Radhakrishnan, Angew. Chem. Int. Ed., 47, 3969 –3972 (2008).

1. "Palladium Nanowire from Precursor Nanowire: Crystal-to-Crystal Transformation via In Situ Reduction by Polymer Matrix" S. Porel, N. Hebalkar, B. Sreedhar, and T. P. Radhakrishnan, Adv. Funct. Mater., 17, 2550–2556 (2007).

Conference Papers:

58. "Generation of electromagnetic doughnut pulses with a singular metamaterial converter",  A. Zdagkas, N. Papasimakis, V. Nalla, H. Zhang, O. Buchnev, N. I. Zheludev,  NanoMeta 2019: 7th International Topical Meeting on Nanophotonics and Metamaterials, Austria. 03 - 06 Jan (2019). 

57. "Nanophotonic Quantum Devices Realized in Fibers and on Chips", Ruixiang Guo, Anton N. Vetlugin, Mikhail V. Shestakov, Salih Yanıkg̈on̈ul, Venkatram Nalla, Cesare Soci, Nikolay I. Zheludev, IPS Meeting 2018, School of Physical and Mathematical Sciences @ NTU, Singapore,  March 7 - 9 (2018).

56. "Generation of Ultrashort Dark Pulses via Coherent Perfect Absorption in Plasmonic Metamaterial",  Venkatram Nalla, Jõao Valente, Handong Sun, Nikolay I. Zheludev, IPS Meeting 2018, School of Physical and Mathematical Sciences @ NTU, Singapore,  March 7 - 9 (2018).

55. “Coherent  information  processing  on  metasurfaces  at  40  Gbit/s  and  beyond”,  Eric Plum, Maria Papaioannou, Angelos Xomalis, Artemios Karvounis, Venkatram Nalla, Iosif  Demirtzioglou,  Yongmin  Jung,  Kevin  MacDonald,  Cosimo  Lacava,  Periklis Petropoulos,  David  Richardson,  Nikolai  Zheludev,  PIERS  2017,  Singapore,  22 November (2017).

54. "Exceptional non-linear optical properties of metal-organic frameworks", Mayer David, Medishetty Raghavender, Nalla Venkatram, Nemec Lydia, Reuter Karsten and Fischer Roland, PS2-143, Euro MOF 2017, TUDelft, The Netherlands, 29 October - 1 November (2017).

53. “Fibre-optic  metadevice  for  all-optical  coherent  signal  processing  at  40  Gbit/s”, Xomalis Angelos, Demirtzioglou Iosif, Nalla Venkatram, Plum Eric, Jung Yongmin, Lacava  Cosimo,  MacDonald  Kevin  F.,  Petropoulos  Periklis,  Richardson  David  J., Zheludev Nikolay I. , CLEO PR, Singapore, 31 July-4 August (2017).

52.  “All Optical Modulators Exceeding 100 THz Bandwidth Via Coherent Absorption Of Metamaterial” NALLA Venkatram, KARVOUNIS Artemios, VALENTE João, SUN Handong, ZHELUDEV Nikolay I., CLEO PR, Singapore, 31 July-4 August (2017).

51. "Ultrafast Regimes of Coherent Absorption in Plasmonic and Dielectric Diamond-based Metasurfaces", Venkatram NALLA, Artemios KARVOUNIS, João VALENTE, Handong SUN, Nikolay I. ZHELUDEV,  ICMAT 2017 (Oral), 171362, SUNTEC, Singapore, 18 - 23 June (2017).

50. "Dissipative optical switch for coherent fibre networks with 100 THz bandwidth", Angelos Xomalis,Yongmin Jung, Iosif Demirtzioglou, Venkatram Nalla, Eric Plum, Kevin F. MacDonald, Periklis Petropoulos, David J. Richardson, Nikolay I. Zheludev,  CLEO®/Europe-EQEC 2017 (Oral), CI-5.2, Munich (ICM), Germany, June, 25 - 29 (2017).

49. "Investigation of Photocarrier Losses in Pyrite (FeS2) Film Consisting Single Crystal Nanocubes", Sudhanshu Shukla, Thirumany Sritharan, Xiong Qihua, Tze Chien Sum, Guichuan Xing, Nripan Mathews, Hu Ge, Thirumalai Venkatesan , Sinu Mathew, Su Zhenghua, Venkatram Nalla, ICNNFC 118, 2nd World Congress on Recent Advances in Nanotechnology (RAN’17),  Alimara Hotel Barcelona, Barcelona, Spain, April 4 - 6 (2017).

48. "100 THz bandwidth optical modulators via cohorent absorption of metamaterial", Venkatram Nalla, Artemios Karvounis, Joao Valente, Handong Sun, Nikolay I. Zheludev, IPS Meeting 2017, Yale-NUS College, Singapore, 22 - 24 February (2017).

47. “Generationof 11-fs Dark Pulses via Coherent Perfect Absorption in Plasmonic Metamaterial”, Venkatram Nalla,  João Valente, Sun Handong, and Nikolay I. Zheludev,  6th International Topical Meeting on Nanophotonics and Metamaterials (NANOMETA 2017) Seefeld, Austria, 4-7 January (2017).

46. "Multi-Photon Absorption in MOFs Controlled by Charge Polarization, Conformational Strain and Alignment", Raghavender Medishetty, Lydia Nemec , Venkatram Nalla, Nikolay Zheludev, Karsten Reuter, and Roland A. Fischer, B4.01, 5th International Conference on Metal-Organic Frameworks & Open Framework Compounds (MOF2016), Long Beach, California, USA, 11-15 September (2016).

45.  "Plasmonic metal-cored fibres", B Gholipour, DM Nguyen, P Bastock, L Cui, V. Nalla, C Craig, K Khan, D Hewak, N Zheludev, C Soci, CLEO:2016, San Jose convention center, San Jose, USA, 5-10 June (2016).

44. "Optical nonlinearity in plasmonic metal-cored fibres", Behrad Gholipour, Duc Minh Nguyen, Paul Bastock, Long Cui, Venkatram Nalla, Christopher Craig, Khouler Khan, Daniel Hewak, Nikolay Zheludev, Cesare Soci, IPS Meeting 2016, SUTD, Singapore,  March 7 - 8 (2016).

43. "100 THz Broadband and single photon optical switching with a plasmonic metamaterial", Venkatram Nalla, S. Vezzoli, C. M. X. Altuzarra, E. Bolduc, J. Valente, J. J. F. Heitz, J. Jeffers, J. Leach, T. Roger, C. Couteau, S. Handong, C. Soci, D. Faccio, and N. I. Zheludev, Metamaterials 2015 (Oral), Oxford, UK, September, 7 - 12  (2015).

42. "100 THz broadband optical switching with plasmonic metamaterial", Venkatram Nalla, Stefano Vezzoli, João Valente, Cesare Soci, Sun Handong and Nikolay Zheludev,  ICMAT15-A-3713 (Oral) SUNTEC, Singapore, 28 June- 3 July (2015).

41. "Topological Insulator Metamaterials for Ultrafast, Broadband Optical Switching", Cesare Soci, Stefano Vezzoli, Giorgio Adamo, Jun-Yu Ou, Jin-Kyu So, Zeng Wang, Jun Yin, Zilong Wang, Venkatram Nalla, Handong Sun, Lan Wang, Nikolay Zheludev, SPP7, Jerusalem, Israel, 31 May-5 June (2015).

40. "100 THz optical switching with plasmonic metamaterial", Venkatram Nalla, Stefano Vezzoli, João Valente, Sun Handong, Nikolay Zheludev, CLEO®/Europe-EQEC 2015 (Oral), Munich (ICM), Germany, June, 21 - 25 (2015).

39. "100 THz bandwidth plasmonicmetamaterial switch", Venkatram Nalla, João Valente, Stefano Vezzoli, Cesare Soci, Sun Handong and Nikolay Zheludev, T3.135 (Oral), IPS Meeting 2015, School of Physical and Mathematical Sciences @ NTU, Singapore,  March 4 - 6 (2015).

38. "100 THz bandwidth all-optical switching using coherent absorption in plasmonic metamaterials" Venkatram Nalla, João Valente, Handong Sun, Nikolay Zheludev,TUE4f-P-32, 5th International Topical Meeting on Nanophotonics and Metamaterials (NANOMETA 2015) Seefeld, Austria, 5-8 January 2015.

37. "Ultrafast Optical Switching of Topological Insulator Plasmonic Metamaterial" Stefano Vezzoli, Giorgio Adamo, Zeng Wang,Venkatram Nalla, Azat Sulaev, Handong Sun, Lan Wang, Cesare Soci, Nikolay Zheludev, TUE4f-P-31, 5th International Topical Meeting on Nanophotonics and Metamaterials (NANOMETA 2015) Seefeld, Austria, 5-8 January 2015.

36. "Plasmonic nanowire-cored silicate fiber spaser ", Duc Minh Nguyen, Behrad Gholipour, Long Cui, Venkatram Nalla, Daniel Hewak, Nikolay Zheludev, Cesare Soci1,WED5f-P-46, 5th International Topical Meeting on Nanophotonics and Metamaterials (NANOMETA 2015) Seefeld, Austria, 5-8 January 2015.

35. "Topological Insulator BSTS as a Broadband Switchable Metamaterial", Ou Jun-Yu, So Jin-Kyu, Adamo Giorgio, Wang Zilong, Yin Jun, Vezzoli Stefano, Nalla Venkatram, Wang Lan, Kevin MacDonald, Soci Cesare, Zheludev Nikolay, L9.05 (Oral), MRS Fall Meeting,  Hynes Convention Center and Sheraton Boston Hotel, Massachusetts, USA, 30 November -5 December (2014).

34. "Enhanced photoluminescence due to two-photon enhanced three-photon absorption in Mn2+-doped ZnS quantum dots", Radhu Subha, Venkatram Nalla, Xiaobo Feng, C. Vijayan and Wei Ji, AIP Conf. Proc. 1620, 401 (2014).

33. "Multimaterial Fiber Nanomanufacturing: from Photodetectors to Nonlinear Light Sources", B. Gholipour, V. Nalla, P. Bastock, K. Khan, C. Craig, D. W. Hewak, N. I. Zheludev and C. Soci, 26.20 (Oral), Photonics North 2014, Montreal Convention Center, ontréal Qc, Canada, 28-30 May (2014).

32. "Optical nonlinearity in silicon at mid-infrared wavelengths" Ting Wang, Nalla Venkatram, Wei Ji, and Dawn Tan,  STu1I.1.(Oral), CLEO:2014, San Jose convention center, San Jose, USA, 8-13 June (2014).

31. "Plasmonic Nanowire Continuum Light Source" Behrad Gholipour, Nalla Venkatram, Paul Bastock, Khouler Khan, Chris Craig, Dan Hewak, Nikolay I. Zheludev, Cesare Soci, SF1N.4. (Oral), CLEO:2014, San Jose convention center, San Jose, USA, 8-13 June (2014).

30. "Topological insulator for broadband switchable metamaterials", Jun-Yu Ou, Jin-Kyu So, Giorgio Adamo, Zilong Wang, Jun Yin, Venkatram Nalla, Stefano Vezzoli, Azat Sulaev, Lan Wang, Handong Sun, Cesare Soci, Nikolay I. Zheludev (Keynote Presentation), Paper 9163-3, SPIE NanoScience + Engineering , San Diego Convention Center, San Diego, California, USA, 17 - 21 August (2014).

29. "Ultrafast broadband modulation of plasmonic topological insulator", Giorgio Adamo, Zilong Wang, Jun Yin, Venkatram Nalla, Stefano Vezzoli, Azat Sulaev, Lan Wang, Handong Sun, Cesare Soci, Nikolay Zheludev, 17: 35, (Oral), META’14 - Singapore, The 5th International Conference on Metamaterials, Photonic Crystals and Plasmonics,Singapore, May 20 – 23, (2014).

28. "Highly collimated broadband emission from plasmonic nanowire embedded in fiber", Behrad Gholipour, Venkatram Nalla, Paul Bastock, Khouler Khan, Chris Craig, Dan Hewak, Nikolay Zheludev, Cesare Soci, P25,  META’14 - Singapore, The 5th International Conference on Metamaterials, Photonic Crystals and Plasmonics,Singapore, May 20 – 23, (2014).

27. "Broadband emission from Hybrid Silicate-Plasmonic Nanowire fiber" Behrad Gholipour, Venkatram Nalla, Paul Bastock, Khouler Khan, Chris Craig, Dan Hewak, Nikolay Zheludev, Cesare Soci, T11.5, (Oral), IPS Meeting 2014, National University of Singapore, Singapore,  February 26 - 28 (2014).

26. "Optical Properties of Topological Insulator" Zilong Wang, Jun Yin, Giorgio Adamo, Venkatram Nalla, Stefano Vezzoli, Azat Sulaev, Lan Wang, Handong Sun, Nikolay I. Zheludev, Cesare Soci, T5.4, (Oral), IPS Meeting 2014, National University of Singapore, Singapore,  February 26 - 28 (2014).

25. "Ultrafast Charge transfer in CdSe/CdTe Tetrapod Nanocrystals and Reduced Graphene Oxide Hybrid materials for enhanced Solar Cell efficiency" Venkatram NALLA, Shi Wun TONG, Nimai MISHRA, Liang Su CHEN, Wenya WU, Wei JI, Jie ZHANG, Yin Thai CHAN, Kian Ping LOH, ICMAT13-A-3776 (Oral) SUNTEC, Singapore, 30 June- 5 July (2013).

24. "CVD Graphene Enhanced Photocurrent Rabi Oscillations Generated by Internal Magnetic Fields in the Al-SiO2 Interface" Venkatram NALLA, Zhang KAI, Kian Ping LOH, Wei JI,  ICMAT13-A-2568 (L-PO2-2) SUNTEC, Singapore, 30 June- 5 July (2013).

23. "One-photon Absorption Saturation Vs Two-photon Absorption" Weiqiang CHEN, Yu WANG, Venkatram NALLA, Zhe XU, Wei JI, ICMAT13-A-3047 (L-PO2-5) SUNTEC, Singapore, 30 June- 5 July (2013) (Best Poster award).

22. "Enhanced Photoluminescence Due to Two-photon Enhanced Three-photon Absorption in Mn++ -doped ZnS Quantum Dots, Applications in Bio-imaging" Radhu SUBHA, Venkatram NALLA, Wei JI, ICMAT 2013, ICMAT13-A-3440 (BB-PO3-28) SUNTEC, Singapore, 30 June- 5 July (2013).

21. “Laser Patterning of Graphene/graphene oxide Schottky Junction for Photodetection and Photovoltaic Applications”,Venkatram Nalla, Ram Sevak SINGH, Wei CHEN, Andrew Thye Shen WEE, Ji WEI, ICYRAM12-A-1221, ICYRAM, Matrix @ Biopolis, Singapore, July 1-6, (2012).

20. "Ultrafast Two-Photon Absorption Based Energy-Transfer of Fullerosome Vesicle Nanostructures for Nonlinear Photonic Applications"Min Wang, Venkatram Nalla, Seaho Jeon, Nam-Goo Kang, Wei Ji, Loon-Seng Tan, and Long Y. Chiang,  221st ECS Meeting, The Electrochemical Society, Washington State Convention Center and the Sheraton Seattle, Seattle, WA, May 6-10, 1201, 1117 (2012).

19. "Solution Processable CdS, CdS-AgInS2 Semiconductor Nanocrystals-Benzothiaziazole Polymer Nanocomposites" Pradipta S. Maiti, Venkatesh Mamidala, Venkatram Nalla, Ji Wei and Suresh Valiyaveetti, S3.4, 2011 MRS Fall Meeting & Exhibit, Hynes Convention Center, Boston, MA, USA, November 28 - December 2 (2011).

18. “New Routes to the Synthesis of ITO Nanoparticles and Their Optical Limiting Properties” Mangayarkarasi Nagarathinam, Venkatram Nalla, Wei Ji, Jagadese J Vittal, ICMAT 2011, B-PO1-54, Pg-52, SUNTEC, Singapore, 26 June- 1 July (2011).

17. "High Two-Photon Absorption and Light-Transmittance Reduction Efficiency of Self-Assembled Oligo(ethylene glycolated)-diphenylaminofluorene-C60 Bilayer Fullerosome Nanovesicles" Venkatesh Mamidala, Venkatram Nalla, Min Wang, Seaho Jeon,Sammaiah Thota, Loon-Seng Tan, Thomas Cooper, Long Y. Chiang and Wei Ji, The 6th Mathematics and Physical Sciences Graduate Congress 2010 (MPSGC 2010), Pg-99, University of Malaya, Malaysia, December 13-15 (2010).

16. "Transient photoconductivity and Nonlinear optical properties of Conjugated polymer-Graphene Oxide composite" N. Venkatram, Lakshminarayana Polavarapu, Kiran Kumar Manga, Bee Min Goh, Kian Ping Loh, Qing-Hua Xu, and Wei Ji, MRS-S Trilateral Conference on Advances in Nanoscience: Energy, Water and Healthcare, Pg-43, IMRE, Singapore, August 11-13 (2010). 

15. "Nonlinear optical properties of Tadpole-shaped AgInSe2 nanocrystals" N. Venkatram, Lu Tian, Meng Tack Ng,   Jagadese J. Vittal, and   Ji Wei, 4th MRS-S conference on Advanced materials, Pg-35, IMRE, Singapore, March, 17-19 (2010). 

14. "Multi‐excitonic properties of Quantum dots for solar cell applications", N. Venkatram, International Network of Young Scientists Initiative (INYS, British Council), Pg-35,  NUS, Singapore, July, 2-5 (2009).

13. “Supercontinuum Generation in quadratic media with controllable polarization properties” R. Sai Santosh Kumar, K. L. N. Deepak, N. Venkatram, D. Narayana Rao, 5th Asian Conference on Ultrafast Phenomena (ACUP 2008), NUS, Singapore, January, 6 - 9 (2008). [Invited talk].

12. "Size dependent multi-photon absorption and luminescence properties of CdSe and CdS nanoparticles"  D. Narayana Rao, N. Venkatram and K. L. N. Deepak,  Workshop on Laser Spectroscopy and Nanophotonics, Organized by Foundation for Innovation and Technology Transfer (FITT) IIT Delhi, India, March,14-15 (2008).

11. “Au+ ion-beam irradiation effects on CdS/CdSe quantum dots” N. Venkatram, T. Reddeppa, R. Sathyavathi, P. V. Satyam and D. Narayana Rao, International Conference on Ion Beam Analysis, University of Hyderabad, September 23-28 (2007).

10. “Femtosecond nonlinear optical properties of alkoxy phthalocyanines studied using Z-Scan technique” By N. Venkatram, D. Narayana Rao, L. Giribabu, and S. Venugopal Rao, 6.7, National Laser Symposium, MSRU,Vadodara, December,16-20 (2007). 

9. “Ultrafast nonlinear optical properties of alkyl phthalocyanine nanoparticles using Z-Scan technique” By N. Venkatram, D. Narayana Rao, L. Giribabu, and S. Venugopal Rao, 6.8, National Laser Symposium, MSRU,Vadodara, December, 16-20 (2007).

8. “Nonlinear optical properties of cadmium telluride nanoparticles using Z-Scan technique” T. Reddeppa, N. Venkatram, R. Sathyavathi, and D. Narayana Rao, 3.59, National Laser Symposium, MSRU,Vadodara, December, 16-20 (2007).

7. “Reverse saturable absorption properties of Zn-Pthalocyanine” N. Venkatram, S. Venugopal Rao, L. Giribabu and D. Narayana Rao, National Symposium on Spectroscopy and its Applications (NSSA-2006), Indian Association for the Cultivation of Science, Kolkata, January 18 - 20, (2006). 

6. "Optical limiting properties of metal nanoparticle - embedded with polymer thin films" S. Porel, N. Venkatram, D. Narayana Rao and T. P. Radhakrishnan, Photonics2006, University of Hyderabad, Hyderabad, December 13-16, (2006), (Best Poster award).

5. "Nonlinear optical studies of phthalocyanines in solutions and thin films of PMMA studied using cw and nanosecond pulse excitation " N. Venkatram, S. J. Mathews, S. Chaitanya Kumar, L. Giribabu, S. Venugopal Rao, and D. Narayana Rao, Photonics2006, University of Hyderabad, Hyderabad, December 13-16, (2006). 

4. "Au+ ion-beam irradiation effects on CdS quantum dots" N. Venkatram, R.Sathyavathi, and D. Narayana Rao, Photonics2006, University of Hyderabad, Hyderabad, December 13-16, (2006), (oral presentation).

3. "Emission and absorption modifications of CdSe nanoparticles by irradiating with high intense fs laser pulses" N. Venkatram, and D. Narayana Rao, Photonics2006, University of  Hyderabad, Hyderabad, December 13-16, (2006).

2.  “Two photon absorption and nonlinear scattering studies of CdS nanoparticles” N. Venkatram, R. Sai Santosh Kumar, M.A. Akundi, and D. Narayana Rao, National Laser Symposium, Pg. 438-439, BARC, Mumbai, January 10-13 (2005).

1. “Optical Limiting Studies of CdS Nanoparticles Dispersed in DMF Solution” N. Venkatram, M.A. Akundi, and D. Narayana Rao, Photonics 2004, Pg. 278, Cochin University of Science and Technology, Cochin, December 9-11, (2004).

Invited Talks:

1. "Nonlinear optical materials and applications", 23 June 2015, Materials Research Department, Ruhr-Universität Bochum, Germany.

Books: 

1.  “NLO Properties of CdS, CdSe, Au and Zinc(II) Phthalocyanine Nanoparticles” N. Venkatram , LAP LAMBERT Academic Publishing, Germany (2010).

Acknowledged in Thesis:

1. Atom/light interaction at the interface of metamaterials, CENG AIK - 2019.

2. "Quantum Interferences with Nanostructured Metamaterials", C Altuzarra - 2017.

3. All dielectric reconfigurable metamaterials, A Karvounis - 2017.

4. Fabrication of micro/nanowire fibres, novel fibre devices and their applications, C Long - 2016.

5. MULTI-PHOTON ABSORPTION INDUCED PHOTOLUMINESCENCE IN DOPED SEMICONDUCTOR QUANTUM DOTS AND HETERO-NANOSTRUCTURES, R SUBHA - 2015.

6. MULTIPHOTON ABSORPTION IN GRAPHENE AND METAL-ORGANIC FRAMEWORKS, C WEIQIANG - 2015

7. Fabrication of micro/nanowire fibres, novel fibre devices and their applications,  C Long - 2015

8. Nonlinear Optics Properties In Tunable Star-Shaped Octupolar Molecules Containing Triphenylamine Center And Benzimidazole Branches, XU ZHE - 2014.

9. "Layered chalcogenides nanostructures: synthesis, characterization and optoelectrical applications",  B MUKHERJEE - 2013.

10. Ion beam writing and modification for integrated optics, VS KUMAR - 2013

11. SYNTHESIS, CHARACTERIZATION AND PROPERTIES OF METAL CHALCOGENIDE NANOMATERIALS, CL JEREMIAH - 2013

12. Epitaxial graphene: synthesis, characterization, and devices, RAMS SINGH - 2012.

13. Theoretical Investigation of Saturable Absorption in Graphene, W QIAN - 2012.

14. Optical limiting properties of novel nanocomposites, V MAMIDALA - 2012

15. "Saturable absorption and two-photon absorption in graphene", Y Hongzhi - 2012.

16. Design and preparation of nanostructures for applications, NEOMIN SHERN - 2009.

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