activity
20192026
most citedTwo-dimensional talc as a natural hyperbolic material

2 citations · 2 across the 6 of their papers we have counts for

collaborators

7 papers

cond-mat.mes-hall2026

Scalable, Simple, and Versatile Encapsulation of 2D Materials and Devices

Gabriel Natale, Uma Chirkova, Flávio Henriques Feres +16

Air-sensitive 2D materials present a fundamental challenge for device integration. Encapsulation is often required to preserve intrinsic properties, yet conventional protection str…

cond-mat.mtrl-sci2026

Magnetic permeability and zone-folded phonons in layered NiPS

André A. A. Silva, Eduardo D. Stefanato, Nicolas M. Kawahala +8

Nickel phosphorus trisulfide (NiPS) stands out as a Mott insulator exhibiting XY-type antiferromagnetic order. In this work, we investigate the electrodynamic response of singl…

physics.optics2026

Infrared light scattering and emission from epsilon near-zero hyperbolic phonon-polaritons in two-dimensional crystals

Flavio Henrique Feres, Martin Bearzatto, Adrien Debacq +24

This work presents the near-field super-scattering and the near-field thermal emission from 2D hyperbolic crystals as general optical phenomena that link near-field nanophotonics t…

cond-mat.mes-hall2025★ 2 cited

Two-dimensional talc as a natural hyperbolic material

Flávio H. Feres, Francisco C. B. Maia, Shu Chen +14

This study demonstrates that two-dimensional talc, a naturally abundant mineral, supports hyperbolic phonon-polaritons (HPhPs) at mid-infrared wavelengths, thus offering a low-cost…

physics.optics2023

Terahertz Twistoptics -- engineering canalized phonon polaritons

Maximilian Obst, Tobias Nörenberg, Gonzalo Álvarez-Pérez +11

The terahertz (THz) frequency range is key to study collective excitations in many crystals and organic molecules. However, due to the large wavelength of THz radiation, the local…

cond-mat.mtrl-sci2021

Ultrabroadband nanocavity of hyperbolic phonon polaritons in 1D-like α-MoO3

Ingrid D. Barcelos, Thalita A. Canassa, Rafael A. Mayer +7

The exploitation of phonon-polaritons in nanostructured materials offers a pathway to manipulate infrared (IR) light for nanophotonic applications. Notably, hyperbolic phonons pola…

physics.optics2019

Group velocity modulation and wavelength tuning of phonon-polaritons by engineering dielectric-metallic substrates

Flávio H. Feres, Rafael A. Mayer, Ingrid D. Barcelos +2

In analogy to the observed for single plasmon-polaritons, we show that subdiffractional hyperbolic phonon-polariton (HP2) modes confined in hexagonal boron nitride (hBN) nanocrysta…