Jean‐Marie Poumirol

Emergence of Localized Surface Plasmons in Unpatterned Hyperdoped Polycrystalline Silicon

Mohamad Bahsoun, J. Groenen, Gonzague Agez, S. Joulié et autres

The ability to engineer localized surface plasmon resonances at large scale usually relies on precise nanoscale patterning. Here, we demonstrate that mid-infrared plasmonic responses can instead emerge in unpatterned polysilicon films composed of nanometric (5-50 nm) grains, challenging established design paradigms and …

fr (code pays fourni par la source)

Geometry-Independent Nanometric Planarization of 3D Nanostructures for Strain-Controlled Integration of 2D Materials

Jonas Müller, Danae Katrisioti, Wiecha, Peter, R, Nicolas Mallet et autres

International audience

Geometry-Independent Nanometric Planarization of 3D Nanostructures for Strain-Controlled Integration of 2D Materials

Jonas Müller, Danae Katrisioti, Peter R. Wiecha, Nicolas Mallet et autres

Emerging 3D nanoelectronic and nanophotonic architectures require dielectric integration with nanometric thickness control to enable vertical stacking and the deposition of strain-sensitive functional layers. High planarity combined with precise control of the supporting dielectric thickness is essential to deposit thin materials without …

fr, gr (code pays fourni par la source)

Emergence of Localized Surface Plasmons in Unpatterned Hyperdoped Polycrystalline Silicon

Mohamad Bahsoun, J. Groenen, Gonzague Agez, S. Joulié et autres

The ability to engineer localized surface plasmon resonances at large scale usually relies on precise nanoscale patterning. Here, we demonstrate that mid-infrared plasmonic responses can instead emerge in unpatterned polysilicon films composed of nanometric (5-50 nm) grains, challenging established design paradigms and …

Emergence of Localized Surface Plasmons in Unpatterned Hyperdoped Polycrystalline Silicon

Mohamad Bahsoun, J. Groenen, Gonzague Agez, S. Joulié et autres

The ability to engineer localized surface plasmon resonances at large scale usually relies on precise nanoscale patterning. Here, we demonstrate that mid-infrared plasmonic responses can instead emerge in unpatterned polysilicon films composed of nanometric (5-50 nm) grains, challenging established design paradigms and …

Silicon nanoantennas for tailoring the optical properties of MoS2 monolayers

Danae Katrisioti, Peter R. Wiecha, Aurélien Cuche, Sotiris Psilodimitrakopoulos et autres

Silicon-based dielectric nanoantennas provide an effective platform for engineering light–matter interactions in van der Waals semiconductors. Here, we demonstrate near-field coupling between monolayer MoS2 and silicon nanoantennas arranged in hexagonal lattices with tunable geometric parameters, leading to a threefold enhancement in photoluminescence …

gr, fr, de (code pays fourni par la source)

2D Excitonics with Atomically Thin Lateral Heterostructures

Sai Shradha, Roberto Rosati, Hassan Lamsaadi, Julian Picker et autres

Semiconducting transition metal dichalcogenides (TMDs), such as MoSe$_2$ and WSe$_2$, exhibit unique optical and electronic properties. Vertical stacking of layers of one or more TMDs, to create heterostructures, has expanded the fields of moiré physics and twistronics. Bottom-up fabrication techniques, such as …

Decoding ladybird’s colours: Structural mechanisms of colour production and pigment modulation

M. Carrada, Mohamed Haddad, Luis M. San‐Jose, Gonzague Agez et autres

This study investigates the mechanisms underlying colour production in the family Coccinellidae, focusing on two model species: Adalia bipunctata (L.) and Calvia quatuordecimguttata (L.). In this family, colours have traditionally been attributed primarily to pigments such as carotenoids and melanins. We propose …

fr (code pays fourni par la source)

Ion beam synthesis of hyper-doped Si nanostructures for infrared plasmonics applications

Caroline Bonafos, Jean‐Marie Poumirol, Meiling Zhang, Hervé Rinnert et autres

International audience

fr (code pays fourni par la source)

Silicon nanoantennas for tailoring the optical properties of MoS2 monolayers

Danae Katrisioti, Peter R. Wiecha, Aurélien Cuche, Sotiris Psilodimitrakopoulos et autres

Silicon-based dielectric nanoantennas provide an effective platform for engineering light-matter interactions in van der Waals semiconductors. Here, we demonstrate near-field coupling between monolayer MoS2 and silicon nanoantennas arranged in hexagonal lattices with tunable geometric parameters, leading to a three-fold enhancement in photoluminescence …

Decoding ladybird’s colours: structural mechanisms of colour production and pigment modulation

M. Carrada, Mohamed Haddad, Luis M. San‐Jose, Gonzague Agez et autres

Abstract This study investigates the mechanisms underlying colour production in the family Coccinellidae, focusing on two model species: A. bipunctata (L) and C. quatuordecimguttata (L) . In this family, colours have traditionally been attributed primarily to pigments such as carotenoids and melanins. …

fr, Maroc (code pays fourni par la source)

Exciton Collimation, Focusing and Trapping Using Complex Transition Metal Dichalcogenide Lateral Heterojunctions

Hassan Lamsaadi, Aurélien Cuche, Gonzague Agez, Ioannis Paradisanos et autres

Abstract Controlling the motion of neutral excitons in optically active media is a mandatory development to enable the conception of advanced circuits and devices for applications in excitronics, quantum photonics, and optoelectronics. Recently, proof of unidirectional exciton transport from high‐ to low‐bandgap …

fr, gr, de, jp (code pays fourni par la source)