Category: Recent publications

THz sheet conductance measured in WS2 micro-crystals

Using a unique optical pump-THz near-field microscopy, we have measured the sheet conductance in WS2 micro-crystals despite their small size compared to the wavelength of THz radiation. Read more here.

October 28, 2022 0

Improving organic solar cells with nanoparticle arrays

Using an evolutionary method, we have simulated the optimum parameters of nanoparticles in arrays for maximum light absorption in organic solar cells. Read more here.

October 28, 2022 0

Bound States in the Continuum in Si metasurfaces

In collaboration with Kyoto University (Japan) and CSIC (Spain), we have demonstrated BICs in non-Bravais lattices of Si nanoparticles. These BICs are designed at telecom wavelengths. You can read more here.

October 9, 2022 0

World record on hydrogen detection sensitivity

In collaboration with the group of Andrea Baldi at the Vrij Universiteit in Amsterdam, we have demonstrated a world record sensitivity in H2 detection by an evolutionary design of a nanoparticle sensor. You can read more here.

October 5, 2022 0

Nanometer resolution with an optical microscope

In collaboration with our start-up company TeraNova B.V., we have introduced a method to determine critical parameters in periodic optical structures over large areas and with nanometer resolution. You can read more here.

October 5, 2022 0

Enhanced exciton propagation in organic crystals by strong coupling

In collaboration with the group of Gerrit Groenhof (University of Jyväskylä), we have demonstrated enhanced exciton transport by strong coupling of tetracene crystals and nanoparticle arrays. You can read more here.

October 5, 2022 0

Chasing Vibro-Polariton Fingerprints in Infrared and Raman Spectra Using Surface Lattice Resonances on Extended Metasurfaces

We present an experimental investigation of vibrational strong coupling of C═O bonds in poly(methyl methacrylate) to surface lattice resonances (SLRs) on arrays of gold particles in infrared and Raman spectra. Despite clear evidence of vibrational strong coupling in IR transmission spectra, both Raman spectroscopy and micro-Raman mapping do not show any polariton signatures. Our results…
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May 1, 2022 0

Effective Negative Diffusion of Singlet Excitons in Organic Semiconductors

We have studied the diffusion of singlet and triplet excitons in tetracene crystals, a prototype singlet fission material, using ultrafast microscopy techniques. Upon laser excitation, triplets diffuse steadily while the singlet exciton distribution narrows, corresponding to an effective negative singlet diffusion. This counterintuitive result is explained by nonlinear triplet‒triplet annihilation. View the article in the Journal…
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February 15, 2021 0

Strong light-matter coupling with Si nanoparticles

In our recently published manuscript, we demonstrate the strong coupling of electric and magnetic resonances in arrays of silicon nanoparticles with excitons in organic layers. This manuscript published in ACS Photonics has been selected by the journal as one of the most relevant results published over the past 12 months and highlighted during the celebration…
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August 24, 2020 0

Light Conversion Efficiency of Emitters on Top of Plasmonic and Dielectric Arrays of Nanoparticles

Together with our collaborators from Kyoto University, we are proud to contribute to the special issue in ECS Journal of Solid State Science and Technology in the honor of Prof. Isamu Akasaki. In this manuscript we investigate the optical absorption of emitter layers deposited on diffractive arrays of silver and titanium dioxide nanoparticle using an…
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June 23, 2020 0