Now showing items 1-13 of 13

    • Cold and Hot Spots: from Inhibition to Enhancement by Nanoscale Phase Tuning of Optical Nanoantennas 

      Blascetta, Nicola Palombo; Lombardi, Pietro; Toninelli, Costanza; van Hulst, Niek F. (ACS, 2020-08-17)
      Article
      Open Access
      Optical nanoantennas are well-known for the confinement of light into nanoscale hot spots, suitable for emission enhancement and sensing applications. Here, we show how control of the antenna dimensions allows tuning ...
    • Enhancing Magnetic Light Emission with All-Dielectric Optical Nanoantennas 

      Sanz-Paz, Maria; Ernandes, Cyrine; Esparza, Juan Uriel; Burr, Geoffrey W.; van Hulst, Niek F.; Maître, Agnès; Aigouy, Lionel; Gacoin, Thierry; Bonod, Nicolas; Garcia-Parajo, Maria F.; Bidault, Sébastien; Mivelle, Mathieu (ACS, 2018-04-27)
      Article
      Open Access
      Electric and magnetic optical fields carry the same amount of energy. Nevertheless, the efficiency with which matter interacts with electric optical fields is commonly accepted to be at least 4 orders of magnitude higher ...
    • Fast photochronoamperometry of photosynthetic complexes for biosensors and electron transport studies 

      López-Ortiz, Manuel; Zamora, Ricardo A.; Remesh, Vikas; Hu, Chen; Croce, Roberta; van Hulst, Niek F.; Gorostiza, Pau (ACS, 2021-02-16)
      Article
      Open Access
      Photosynthetic reactions in plants, algae, and cyanobacteria are driven by photosystem I and photosystem II complexes, which specifically reduce or oxidize partner redox biomolecules. Photosynthetic complexes can also bind ...
    • Nanoscale mapping and control of antenna-coupling strength for bright single photon sources 

      Singh, Anshuman; Roque Fernández, Pablo Manuel de; Calbris, Gaëtan; Hugall, James T.; van Hulst, Niek F. (ACS, 2017-03-23)
      Article
      Open Access
      Cavity QED is the art of enhancing light-matter interaction of photon emitters in cavities, with opportunities for sensing, quantum information and energy capture technologies. To boost emitter-cavity interaction, i.e. ...
    • Phase control of plasmon enhanced two-photon photoluminescence in resonant gold nanoantennas 

      Remesh, Vikas; Stührenberg, Michael; Saemisch, Lisa; Accanto, Nicolò; van Hulst, Niek F. (AIP, 2018-08-08)
      Article
      Open Access
      Plasmonic nanoantennas emit two-photon photoluminescence, which is much stronger than their second harmonic generation. Unfortunately, luminescence is an incoherent process and therefore generally not explored for nanoscale ...
    • Photocurrent-detected 2D electronic spectroscopy reveals ultrafast hole transfer in operating PM6/Y6 organic solar cells 

      Bolzonello, Luca; Bernal Texca, Francisco Gumaro; Gerling Sarabia, Luis Guillermo; Ockova, Jana; Collini, Elisabetta; Martorell Pena, Jordi; van Hulst, Niek F. (2021-04-29)
      Article
      Open Access
      The performance of nonfullerene-acceptor-(NFA)-based organic solar cells is rapidly approaching the efficiency of inorganic cells. The chemical versatility of NFAs extends the light-harvesting range to the infrared, while ...
    • Plasmonic Nanoantennas Enable Forbidden Förster Dipole-Dipole Energy Transfer and Enhance the FRET Efficiency 

      Torres, Juan de; Mivelle, Mathieu; Babu Moparthi, Satish; Rigneault, Hervé; van Hulst, Niek F.; Garcia-Parajo, Maria F.; Margeat, Emmanuel; Wenger, Jérôme (ACS, 2016-09-13)
      Article
      Open Access
    • Room Temperature Excitation-Emission Spectra of Single LH2 Complexes Show Remarkably Little Variation 

      Gellings, Esther; Cogdell, Richard J.; van Hulst, Niek F. (ACS, 2020-03-06)
      Article
      Open Access
      Excitation spectroscopy gives direct insight into the excited state manifold, energy transfer, transient intermediates, vibrations, and so on. Unfortunately, excitation spectroscopy of single molecules under ambient ...
    • Selective excitation of individual nanoantennas by pure spectral phase control in the ultrafast coherent regime 

      Accanto, Nicolò; Roque Fernández, Pablo Manuel de; Galvan-Sosa, Marcial; Hancu, Ion M.; van Hulst, Niek F. (De Gruyer, 2020-09-07)
      Article
      Open Access
      Coherent control is an ingenious tactic to steer a system to a desired optimal state by tailoring the phase of an incident ultrashort laser pulse. A relevant process is the two-photon–induced photoluminescence (TPPL) of ...
    • Selective excitation of individual nanoantennas by pure spectral phase control in the ultrafast coherent regime 

      Accanto, Nicolò; Roque Fernández, Pablo Manuel de; Galvan-Sosa, Marcial; Hancu, Ion Michael; van Hulst, Niek F. (2020-09-07)
      Article
      Open Access
      Coherent control is an ingenious tactic to steer a system to a desired optimal state by tailoring the phase of an incident ultrashort laser pulse. A relevant process is the two-photon–induced photoluminescence (TPPL) of ...
    • Surface-Enhanced Raman Scattering Holography 

      Liebel, Matz; Pazos-Perez, Nicolas; van Hulst, Niek F.; Alvarez-Puebla, A. (nature, 2020-09-15)
      Article
      Open Access
      Nanometric probes based on surface-enhanced Raman scattering (SERS) are promising candidates for all-optical environmental, biological and technological sensing applications with intrinsic quantitative molecular specificity. ...
    • Ultrafast meets ultrasmall: controlling nanoantennas and molecules 

      Piatkowski, Lukasz; Accanto, Nicolò; van Hulst, Niek F. (ACS, 2016-04-25)
      Article
      Open Access
      We present a review on the advances of pulse control and ultrafast coherent excitation of both plasmonic nanoantennas and individual molecular systems, primarily based on the achievements in our group. Essential concepts ...
    • Widefield SERS for High-Throughput Nanoparticle Screening 

      Liebel, Matz; Calderon, Irene; Pazos-Perez, Nicolas; van Hulst, Niek F.; Alvarez-Puebla, Ramon A (Wiley, 2022-02-02)
      Article
      Restricted access - publisher's policy
      Surface-enhanced Raman scattering (SERS) imaging is a powerful technology with unprecedent potential for ultrasensitive chemical analysis. Point-by-point scanning and often excessively long spectral acquisition-times hamper ...