Publicaciones

• COMM

THz topological Waveguides in 600 GHz frequency Region

Abdu Subahan Mohamed, Edouard Lebouvier, Gaëtan Lévêque, Yan Pennec, Marc Faucher, Alberto Amo, Pascal Szriftgiser, Guillaume Ducournau

We experimentally demonstrate a silicon-based valley photonic crystal (VPC) waveguide for the 590-620 GHz frequency region. We specifically conduct measurements on the transmission and group delay for normal silicon waveguides and Valley photonic crystal waveguides and state that topological valley...

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2023, Montreal, Canada. ⟨10.1109/IRMMW-THz57677.2023.10298871⟩. ⟨hal-04277479⟩

• ART

Efficient Co/Pt THz spintronic emitter with tunable polarization

A. Buryakov, A. Gorbatova, P. Avdeev, E. Lebedeva, K. Brekhov, A. Ovchinnikov, N. Gusev, E. Karashtin, M. Sapozhnikov, E. Mishina, N. Tiercelin, V.L. Preobrazhensky

We report on the design of a spintronic emitter based on the Pt(3 nm)/Co(3 nm) structure, which enables the control over terahertz radiation polarization. Utilizing the field-induced magnetization rotation that takes place at low magnetic fields of up to 250 Oe at room temperature, we have achieved...

Applied Physics Letters, 2023, 123 (8), ⟨10.1063/5.0160497⟩. ⟨hal-04243717⟩

• ART

Functionalization of Carbon Surfaces Using the Copper-Catalyzed Diels–Alder Reaction

Denis Ari, Jean-Francois Bergamini, Teresa Rodrigues, Wolfgang Knoll, Charles Cougnon, Essraa Ahmed, Paulius Pobedinskas, Ken Haenen, Nicolas Nuns, Rabah Boukherroub, Sabine Szunerits, Yann R. Leroux

We propose here a new method to functionalize carbon materials via a catalyzed Diels–Alder reaction. In a Diels–Alder reaction, carbon materials can be used as a diene or a dienophile. Here, carbon materials are used as dienes and alkyne-terminated derivatives as dienophiles. Different carbon...

Chemistry of Materials, 2023, 35 (13), pp.4935-4944. ⟨10.1021/acs.chemmater.3c00055⟩. ⟨hal-04161169⟩

• ART

Advances on Microsupercapacitors: Real Fast Miniaturized Devices toward Technological Dreams for Powering Embedded Electronics?

Khac Huy Dinh, Pascal Roussel, Christophe Lethien

Electrochemical lithium (de)intercalation in an atomic layer deposited (ALD) TiO2 anatase thin film deposited on a planar Si /Al2O3/Pt substrate is investigated by Raman spectroscopy. An initial discharge capacity of 63 µAh cm−2 µm−1 (0.5 Li+ mole−1) is reached at C/10 rate, which increases up to...

ACS Omega, 2023, 8 (10), pp.8977-8990. ⟨10.1021/acsomega.2c07549⟩. ⟨hal-04034213⟩

• ART

Hermitian and non-Hermitian Weyl physics in synthetic three-dimensional piezoelectric phononic beams

Liangshu He, Yan Li, Bahram Djafari-Rouhani, Yabin Jin

Recently, the evolution of the Weyl point (WP) caused by the introduction of nonhermiticity into Weyl semimetals has aroused great research interest. We consider elastic flexural wave propagation in a phononic beam containing piezoelectric materials and introduce nonhermiticity through active...

Physical Review Research, 2023, 5 (2), pp.023020. ⟨10.1103/PhysRevResearch.5.023020⟩. ⟨hal-04089768⟩

• ART

All-Solid-State Interdigitated Micro-Supercapacitors Based on Porous Gold Electrodes

Aymeric Pastre, Alexandre Boé, Nathalie Rolland, Rémy Bernard

Recent developments in embedded electronics require the development of micro sources of energy. In this paper, the fabrication of an on-chip interdigitated all-solid-state supercapacitor, using porous gold electrodes and a PVA/KOH quasisolid electrolyte, is demonstrated. The fabrication of the...

Sensors, 2023, 23 (2), pp.619. ⟨10.3390/s23020619⟩. ⟨hal-03929831⟩

• ART

Capillary-driven horseshoe vortex forming around a micro-pillar

K. Ozawa, H. Nakamura, K. Shimamura, G.F. Dietze, H.N. Yoshikawa, Farzam Zoueshtiagh, K. Kurose, L. Mu, I. Ueno

Hypothesis: Horseshoe vortices are known to emerge around large-scale obstacles, such as bridge pillars, due to an inertia-driven adverse pressure gradient forming on the upstream-side of the obstacle. We contend that a similar flow structure can arise in thin-film Stokes flow around micro-...

Journal of Colloid and Interface Science, 2023, 642, pp.227-234. ⟨10.1016/j.jcis.2023.03.039⟩. ⟨hal-04187943⟩

• COMM

[Invited] Tailoring Bound States in the Continuum by Circular Clusters of Scatterers

M. Martı-Sabate, J. Li, S. Cummer, B. Djafari-Rouhani, D. Torrent

PHONONICS 2023: 6th International Conference on Phononic Crystals/Metamaterials/Metasurfaces, Phonon Transport, and Topological Phononics, Jun 2023, Manchester (UK), United Kingdom. ⟨hal-04374200⟩

• COMM

Experimental study of piezoelectric phononic crystals with space-time modulation in the sub-sonic and sonic regimes

S. Tessier Brothelande, C. Croenne, F. Allein, J.O. Vasseur, B. Dubus

PHONONICS 2023: 6th International Conference on Phononic Crystals/Metamaterials/Metasurfaces, Phonon Transport, and Topological Phononics, Jun 2023, Manchester (UK), United Kingdom. ⟨hal-04373890⟩

• ART

Discovery of a Peptide Nucleic Acid (PNA) aptamer for cardiac troponin I: Substituting DNA with neutral PNA maintains picomolar affinity and improves performances for electronic sensing with graphene field-effect transistors (gFET)

Teresa Rodrigues, Federica Curti, Yann R. Leroux, Alexandre Barras, Quentin Pagneux, Henri Happy, Christoph Kleber, Rabah Boukherroub, Roger Hasler, Stefano Volpi, Maria Careri, Roberto Corradini, Sabine Szunerits, Wolfgang Knoll

DNA-based aptamers are widely employed as bioreceptors, owing to their tuneable affinity and specificity towards their targets. The use of peptide nucleic acids (PNAs) has instead proven challenging for this purpose, due to the absence of selection methods for the independent discovery of suitable...

Nano Today, 2023, 50, pp.101840. ⟨10.1016/j.nantod.2023.101840⟩. ⟨hal-04102165⟩