[Journal Articles][Conference Papers]

Luca Dal Negro Assistant Professor Electrical and Computer Engineering 8 St.Mary's Street Email: dalnegro http://www.bu.edu/nano/

Biography

RESEARCH INTERESTS:

The control of nanomaterials, structures and optical fields lies at the heart of the current nanotechnology revolution and offers unprecedented opportunities to engineer novel functional elements on the nanoscale. Dal Negro’s group research activities are focused on the nano-fabrication, optical characterization and electromagnetic modeling of metal-dielectric nanomaterials and nanostructures for on-chip nanophotonics applications. In particular, we develop efficient nanoscale light sources and laser structures based on the cost-effective silicon technology and we study the unique behavior of optical fields confined on the nanoscale by complex media such as fractals, quasi-crystals and pseudo-random systems. Our combined computational and experimental activities are aimed at advancing the fields of silicon photonics and nanoplasmonics by demonstrating novel concepts and device structures for on-chip optical sensing, light emission, energy harvesting and detection.

Our research efforts involve ab-initio electrodynamical modeling, materials synthesis, and optical characterization and of nanostructures. In particular, we fabricate and study the linear and nonlinear optical properties of silicon-based nanostructures, optical bio-polymers and semiconductor quantum dots. In addition, using electron-beam nanolithography we design and fabricate large-scale, resonant arrays of nanoparticles and study their photonic-plasmonic behavior in relation to light-matter coupling, multiple light scattering, radiative processes (light emission), and optical nonlinearity.

Journal Articles

34.) L. Dal Negro, G. Miano, G. Rubinacci, A. Tamburrino, and S. Ventre, "A Fast Computation Method for the Analysis of an Array of Metallic Nanoparticles," IEEE Transactions on Magnetics, Vol. 45, No. 3, 3 March 2009

33.) A. Gopinath, S. V. Boriskina, B. M. Reinhard, and L. Dal Negro, "Deterministic aperiodic arrays of metal nanoparticles for surface-enhanced Raman scattering (SERS)," Optics Express, Vol. 17, No. 5, 2 March 2009, pp. 3741-3753

32.) C. Forestiere, G. Miano, G. Rubinacci, and L. Dal Negro, "Role of aperiodic order in the spectral, localization, and scaling properties of plasmon modes for the design of nanoparticle arrays," Physical Review B, Vol. 79, 3 February 2009

31.) C. Forestiere, G. Miano, S. V. Boriskina, and L. Dal Negro, "The role of nanoparticles shapes and deterministic aperiodicity for the design of nanoplasmonic arrays," Optics Express, Vol. 17, No. 12, 2009, pp. 9648-9661

30.) R. Li, S. Yerci, and L. Dal Negro, "Temperature dependence of the energy transfer from amorphous silicon nitride to Er ions," Applied Physics Letters, Vol. 95, 2009, pp. 041111

29.) S. V. Boriskina, A. Gopinath, and L. Dal Negro, "Optical gaps, mode patterns and dipole radiation in two-dimensional aperiodic photonic structures," Physica E, Vol. 41, 2009, pp. 1102-1106

28.) R. Dallapiccola, C. Dubois, A. Gopinath, F. Stellaci, and L. Dal Negro, "Near-field excitation and near-field detection of propagating surface plasmon polaritons on Au waveguide structures," Applied Physics Letters, Vol. 94, 2009, pp. 243118

27.) J. Warga, R. Li, S. N. Basu, and L. Dal Negro, "Erbium-doped silicon nanocrystals in silicon/silicon nitride superlattice structures: Light emission and energy transfer," Physica E, Vol. 41, 2009, pp. 1040-1043

26.) B. Yan, A. Thubagere, W. R. Premasiri, L. D. Ziegler, L. Dal Negro, and B. M. Reinhard, "Engineered SERS substrates with multiscale signal enhancement: nanoparticle cluster arrays," Acs Nano, Vol. 3, No. 5, 2009, pp. 1190-1202

25.) S. Yerci, R. Li, S. O. Kucheyev, T. van Buuren, S. N. Basu, and L. Dal Negro, "Energy transfer and 1.54 µm emission in amorphous silicon nitride films," Applied Physics Letters, Vol. 95, 2009, pp. 031107

24.) C. Forestiere, G. Miano, C. Serpico, M. d'Aquino, and L. Dal Negro, "Dipolar mode localization and spectral gaps in quasi-periodic arrays of ferromagnetic nanoparticles," Physical Review B, Vol. 79, 2009, pp. 214419

23.) S. V. Boriskina, A. Gopinath, and L. Dal Negro, "Optical gap formation and localization properties of optical modes in deterministic aperiodic photonic structures," ACTA Crystallographica C, Vol. 23, November 2008, pp. 18813-18826

22.) S. V. Boriskina, and L. Dal Negro, "Sensitive label-free biosensing using critical modes in aperiodic photonic structures," Optics Express, Vol. 16, No. 17, August 2008, pp. 12511-12522

21.) L. Dal Negro, N. Feng, and A. Gopinath, "Electromagnetic coupling and plasmon localization in deterministic aperiodic arrays," Journal of Optics A: Pure and Applied Optics, Vol. 10, May 2008, pp. 064013

20.) R. Dallapiccola, A. Gopinath, F. Stellaci, and L. Dal Negro, "Quasi-periodic distribution of plasmon modes in two-dimensional Fibonacci arrays of metal nanoparticles," Optics Express, Vol. 16, No. 8, April 2008, pp. 5544-5555

19.) M. F. Saleh, L. Dal Negro, and B. E. Saleh, "Second-order parametric interactions in 1-D photonic-crystal microcavity structures," Optics Express, Vol. 16, No. 8, April 2008, pp. 5261-5276

18.) H. Perry, A. Gopinath, D. L. Kaplan, L. Dal Negro, and F. G. Omenetto, "Nano- and Micropatterning of Optically Transparent Mechanically Robust, Biocompatible Silk Fibroin Films ," Advanced Materials, Vol. 20, 2008, pp. 3070-3072

17.) A. Gopinath, S. V. Boriskina, N. Feng, B. M. Reinhard, and L. Dal Negro, "Photonic-Plasmonic Scattering Resonances in Deterministic Aperiodic Structures," Nano Letters, Vol. 8, No. 8, 2008, pp. 2423-2431

16.) J. Warga, S. N. Basu, and L. Dal Negro, "Electroluminescence from silicon-rich nitride/silicon superlattice structures," Applied Physics Letters, Vol. 93, 2008, pp. 151116

15.) R. Li, J. R. Schneck, J. Warga, L. D. Ziegler, and L. Dal Negro, "Carrier dynamics and erbium sensitization in silicon-rich nitride nanocrystals," Applied Physics Letters, Vol. 93, 2008, pp. 091119

14.) M. Makarova, V. Sih, J. Warga, R. Li, L. Dal Negro, and J. Vuckovic, "Enhanced light emission in photonic crystal nanocavities with Erbium-doped silicon nanocrystals," Applied Physics Letters, Vol. 92, 2008, pp. 161107

13.) A. Gopinath, S. V. Boriskina, N. Feng, B. M. Reinhard, and L. Dal Negro, "Photonic-plasmonic scattering resonances in deterministic aperiodic structures," Nano Letters, Vol. 8, No. 8, 2008, pp. 2423-2431

12.) L. Dal Negro, R. Li, J. Warga, and S. N. Basu, "Sensitized erbium emission from silicon-rich nitride/silicon superlattice structures," Applied Physics Letters, Vol. 92, 2008, pp. 181105

11.) N. Feng, and L. Dal Negro, "Plasmon mode transformation in modulated-index metal-dielectric slot waveguides," Optics Letters, Vol. 32, No. 21, November 2007, pp. 3086-3088

10.) L. Dal Negro, and N. Feng, "Spectral gaps and mode localization in Fibonacci chains of metal nanoparticles," Optics Express, Vol. 15, No. 22, October 2007, pp. 14396-14403

9.) M. Hiltunen, L. Dal Negro, N. Feng, L. C. Kimerling, and J. Michel, "Modeling of aperiodic fractal waveguide structures for multifrequency light transport," Journal of Lightwave Technology, Vol. 25, July 2007, pp. 1841-1847

8.) N. Feng, M. L. Brongersma, and L. Dal Negro, "Metal-dielectric slot-waveguide structures for the propagation of surface plasmon polaritons at 1.55 mu m," IEEE Journal of Quantum Electronics, Vol. 43, No. 5-6, May/June 2007, pp. 478-485

7.) L. Dal Negro, J. H. Yi, J. Michel, L. C. Kimerling, T. F. Chang, V. Sukhovatkin, and E. H. Sargent , "Light emission efficiency and dynamics in silicon-rich silicon nitride films," Applied Physics Letters, Vol. 88, 2006, pp. 233109

6.) L. Dal Negro, J. H. Yi, L. C. Kimerling, S. Hamel, A. Williamson, and G. Galli, "Light emission from silicon-rich nitride nanostructures," Applied Physics Letters, Vol. 88, 2006, pp. 183103

5.) L. Dal Negro, J. H. Yi, V. Nguyen, Y. Yi, J. Michel, and L. C. Kimerling, "Spectrally enhanced light emission from aperiodic photonic structures," Applied Physics Letters, Vol. 86, 2005, pp. 261905

4.) L. Dal Negro, M. Cazzanelli, B. Danese, L. Pavesi, F. Iacona, G. Franzo, and F. Priolo, "Light amplification in silicon nanocrystals by pump and probe transmission measurements," Journal of Applied Physics, Vol. 96, No. 10, 15 November 2004, pp. 5747-5755

3.) L. Dal Negro, C. J. Oton, Z. Gaburro, L. Pavesi, P. Johnson, A. Lagendijk, R. Righini, M. Colocci, and D. S. Wiersma, "Light Transport through the Band-Edge States of Fibonacci Quasicrystals," Physical Review Letters, Vol. 90, February 2003, pp. 055501

2.) D. Pacifici, G. Franzo, F. Priolo, F. Iacona, and L. Dal Negro, "Modeling and perspectives of the Si nanocrystals–Er interaction for optical amplification," Physical Review B, Vol. 67, 2003, pp. 245301

1.) L. Pavesi, L. Dal Negro, C. Mazzoleni, G. Franzo, and F. Priolo, "Optical gain in silicon nanocrystals," Nature, Vol. 408, 23 November 2000, pp. 440-444

Conference Papers

1.) L. Dal Negro, R. Li, J. Warga, and S. N. Basu, "Silicon nanocrystals in silicon nitride structures: towards efficient light emission under optical and electrical pumping," IEEE International Conference on Group IV Photonics, 2008, pp. 35-37