Paolo Biagioni

LATEST NEWS

• June 13th, 2018- Superchiral surface waves on the cover of Chirality!
  
  
   
• June 1st, 2018 - Chiral plasmons meet electrons on arXiv: "Generation and control of an ultrafast electron vortex beam via chiral plasmonic near-fields"
   
• April 30th, 2018 - Our sensitivity test on Plasmon-Enhanced Second Harmonic Sensing is finally out in J. Phys. Chem. C! 
   
• March 27th, 2018 - "Superchiral surface waves for all-optical enantiomer separation" just posted on arXiv: from chiroptical spectroscopy to chiral forces!!!
   
• March 9th, 2018 - "Evidence for cascaded third harmonic generation in non-centrosymmetric gold nanoantennas", i.e., SHG matters for THG as well!
   
• February 12th, 2018 - the GEMINI consortium goes nonlinear! "Mid infrared nonlinear plasmonics using germanium nanoantennas on silicon substrates" just posted on arXiv
   
• January 30th, 2018 - "Limits of Kirchhoff’s Laws in Plasmonics": how careful should we be when using impedance descriptions for plasmonic nanocircuits?
   
• November 21st, 2017 - Finally out! Check our publication "Near-field imaging of free carriers in ZnO nanowires with a scanning probe tip made of heavily doped germanium", the result of a collaboration with the Molecular Foundry at Berkeley.
   
• October 26th, 2017 - Another step towards heavier doping in Ge on Si by the GEMINI consortium: "Optical properties of highly n-type doped germanium obtained by in situ doping and laser annealing"
   
• June 6th, 2017 - Surface waves, with a twist! "Chiral surface waves for enhanced circular dichroism" published online on Phys. Rev. B.
   
• February 7th, 2017 - Our PRIN 2015 project "Plasmon-enhanced vibrational circular dichroism" just started! We will investigate plasmonic superchirality to study chiral molecules in the mid-infrared.
   
• October 20th, 2016 - "Local Field Enhancement: Comparing Self-Similar and Dimer Nanoantennas" just published on J. Phys. Chem. C: are self-similar nanolenses really the best choice for extreme field enhancements?
   
• June 28th, 2016 - "Optical Activation of Germanium Plasmonic Antennas in the Mid Infrared" accepted for publication on Physical Review Letters! The paper describes the activity of the GEMINI project on all-optical ultrafast plasmonics in the mid-infrared.
   

Curriculum vitae

Paolo Biagioni studied at Politecnico di Milano (Italy), where he first got his Degree in Electronic Engineering in 2003 and then his Ph.D. in Physics under the supervision of Prof. Lamberto Duò, working on linear and non-linear near-field microscopy and on the near-field properties of metal nanoparticles. He received his Ph.D. in 2007 with the dissertation "Field enhancement and confinement at optical wavelengths: nonlinear near-field microscopy and resonant metal nanoparticles". During the Ph.D., he also worked in Basel (Switzerland) by the group of Prof. Dieter Pohl and Prof. Bert Hecht, working on resonant optical antennas.

After a one-year Post Doc in Milano, in 2008 he was awarded a Humboldt Fellowship for Postdoctoral Researchers, which he spent working in the group of Prof. Bert Hecht in Würzburg (Germany) focusing on near-field polarization engineering with optical cross antennas and on the impedance description of plasmonic antenna circuits.

He has been Assistant Professor (Ricercatore) since 2010 and Associate Professor since 2014 at the Physics Department, Politecnico di Milano (Italy).

His research interests are in nano-optics and plasmonics. At present his main activities are focused on:

• Linear and nonlinear properties of Au nanoantennas
• Mid-infrared plasmonics and sensing with heavily-doped Ge materials
• Subwavelength Ge resonators for  enhanced light emission at telecom wavelengths
• Polarization control and chirality at the nanoscale
   

He is the coordinator of the FET-Open EU project GEMINI ("GErmanium Mid-Infrared plasmoNIcs for sensing") and of the PRIN project "Plasmon enhanced vibrational circular dichroism".

Selected publications (see the links at the bottom of the page for the full publication list)

• G. Pellegrini, M. Finazzi, M. Celebrano, L. Duò, and P. Biagioni
  “Chiral surface waves for enhanced circular dichroism” - Phys. Rev. B 95, 241402(R) (2017).
• M. P. Fischer, Ch. Schmidt, E. Sakat, J. Stock, A. Samarelli, J. Frigerio, M. Ortolani, D. J. Paul, G. Isella, A. Leitenstorfer, P. Biagioni, and D. Brida
  “Optical activation of germanium plasmonic nanoantennas in the mid infrared” - Phys. Rev. Lett. 117, 047401 (2016).
• E. Sakat, I. Bargigia, M. Celebrano, A. Cattoni, S. Collin, D. Brida, M. finazzi, C. D’Andrea, and P. Biagioni
  "Time-resolved photoluminescence in gold nanoantennas" - ACS Photonics 3, 1489 (2016).
• L. Baldassarre, E. Sakat, J. Frigerio, A. Samarelli, K. Gallacher, E. Calandrini, G. Isella, D. K. Paul, M. Ortolani, and P. Biagioni
  "Midinfrared plasmon-enhanced spectroscopy with germanium antennas on silicon substrates" - Nano Lett. 15, 7225 (2015).
• M. Celebrano, X. Wu, M. Baselli, S. Großmann, P. Biagioni, A. Locatelli, C. De Angelis, G. Cerullo, R. Osellame, B. Hecht, L. Duò, F. Ciccacci, and M. Finazzi
  "Mode matching in multiresonant plasmonic nanoantennas for enhanced second harmonic generation" - Nature Nanotechnology 10, 412 (2015).
• F. Bottegoni, M. Celebrano, M. Bollani, P. Biagioni, G. Isella, F. Ciccacci, and M. Finazzi
  "Spin voltage generation through optical excitation of complementary spin populations" - Nature Mater. 13, 790 (2014).
• P. Biagioni, D. Brida, J.-S. Huang, J. Kern, L. Duò, B. Hecht, M. Finazzi, and G. Cerullo
  "Dynamics of four-photon photoluminescence in gold nanoantennas" - Nano Lett. 12, 2941 (2012).
• P. Biagioni, J.-S. Huang, and B. Hecht
  "Nanoantennas for visible and infrared radiation" - Rep. Prog. Phys. 75, 024402 (2012).
• P. Biagioni, M. Savoini, J.-S. Huang, L. Duò, M. Finazzi, and B. Hecht
  “Near-field polarization shaping by a near-resonant plasmonic cross antenna” - Phys. Rev. B 80, 153409 (2009)
• P. Biagioni, M. Celebrano, M. Savoini, G. Grancini, D. Brida, S. Mátéfi-Tempfli, M. Mátéfi-Tempfli, L. Duò, B. Hecht, G. Cerullo, and M. Finazzi
  “Dependence of the two-photon photoluminescence yield of gold nanostructures on the laser pulse duration” - Phys. Rev. B 80, 045411 (2009).
• P. Biagioni, J. S. Huang, L. Duò, M. Finazzi, and B. Hecht
  “Cross resonant optical antenna” - Phys. Rev. Lett. 102, 256801 (2009).