activity
20162026
most citedIndirect to direct bandgap transition in methylammonium lead halide perovskite

420 citations · 564 across the 6 of their papers we have counts for

collaborators

8 papers

physics.optics2026

A generalized Kirchhoff's law of thermal radiation for Floquet media

Sander A. Mann, Dimitrios L. Sounas, Andrea Alù

Kirchhoff's law fundamentally relates thermal emission to absorption. For linear, static, reciprocal media, it equates the emissivity and absorptivity for each direction and freque…

physics.optics2026

Finite-Size Effects in Nonlocal Metasurfaces

Tom Hoekstra, Sander A. Mann, Jorik van de Groep

Metasurfaces leveraging nonlocal resonances enable narrowband spectral control and strong near-fields, with applications spanning augmented reality, biosensing, and nonlinear optic…

physics.optics2023

Spatio-Temporal Coupled Mode Theory for Nonlocal Metasurfaces

Adam Overvig, Sander A. Mann, Andrea Alù

Diffractive nonlocal metasurfaces have recently opened a broad range of exciting developments in nanophotonics research and applications, leveraging spatially extended (yet locally…

physics.optics2021

On the bandwidth of singular plasmonic resonators in relation to the Chu limit

Mariano Pascale, Sander A. Mann, Carlo Forestiere +1

Plasmonic nanostructures with singular geometries can exhibit a broadband scattering response that at first glance appears to violate the lower bounds for the radiation quality (Q)…

physics.optics2021★ 5 cited

Lower Bounds to the Q factor of Electrically Small Resonators through Quasistatic Modal Expansion

Mariano Pascale, Sander A. Mann, Dimitrios C. Tzarouchis +3

The problem of finding the optimal current distribution supported by small radiators yielding the minimum quality (Q) factor is a fundamental problem in electromagnetism. Q factor…

physics.optics2018

Nonreciprocal Cavities and the Time-Bandwidth Limit

Sander A. Mann, Dimitrios L. Sounas, Andrea Alù

The time-bandwidth limit inherently relates the lifetime of a resonance and its spectral bandwidth, with direct implications on the maximum storage time of a pulse versus its frequ…

physics.optics2017★ 139 cited

Imaging a Nitrogen-Vacancy Center with a Diamond Immersion Metalens

Richard R. Grote, Tzu-Yung Huang, Sander A. Mann +5

Solid-state quantum emitters have emerged as robust single-photon sources and addressable spins: key components in rapidly developing quantum technologies for broadband magnetometr…

cond-mat.mtrl-sci2016★ 420 cited

Indirect to direct bandgap transition in methylammonium lead halide perovskite

Tianyi Wang, Benjamin Daiber, Jarvist M. Frost +4

Methylammonium lead iodide perovskites are considered direct bandgap semiconductors. Here we show that in fact they present a weakly indirect bandgap 60 meV below the direct bandga…