Mathematical Models and Methods for Hierarchical Systems in Mechanics, Giuseppe Puglisi, Politecnico di Bari; Maria Grazia Naso, Università degli Studi di Brescia; Indam (Istituto Nazionale di Alta Matematica "Francesco Severi"), Sep 2025, Cortona, Italie, France. ⟨hal-05300707⟩

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Enhanced near-infrared organic photodetectors leveraging core–shell nanotripods

Kaiwen Zheng, Baozhong Deng, Nan Chen, Clemence Chinaud-Chaix, Mona Tréguer-Delapierre, B. Grandidier, Renaud Bachelot, Tao Xu, Jianhua Zhang, Furong Zhu

Near-infrared (NIR) photodetectors are essential for diverse applications, including medical diagnostics, optical communication, and bioimaging. Traditional photodetectors, typically made from silicon and III–V semiconductors, struggle with large-area devices on precured or flexible substrates due…

ACS Applied Materials & Interfaces, 2025, 17 (23), pp.34304-34316. ⟨10.1021/acsami.5c02476⟩. ⟨hal-05119320⟩

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A Theoretical Analysis of the Frequency Response in p-i-n Photodiodes that Use InGaAs/InP Materials

Nesrine Bakalem, Abdelkader Aissat, Samuel Dupont, Faouzi Saidi, Mohamed Houcine Dhaou, Jean Pierre Vilcot

This investigation is centered on the analysis of frequency response characteristics of a p-i-n photodiode using InxGa$_{1-x}$As/InP. The InGaAs/InP can be developed under three conditions: compression, tensile strain, and lattice matching. Initially, we performed calculations on strain, bandgap…

Micromachines, 2025, 16 (7), pp.764. ⟨10.3390/mi16070764⟩. ⟨hal-05170116⟩

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Nanoscale Calibration Standards for On-Wafer S-Parameters measurements up to 110 GHz

Daouda Seck, Djamel Allal, Florent Marlec, Clément Lenoir, Mohamed Sebbache, Kamel Haddadi

<div xmlns="http://www.tei-c.org/ns/1.0"><p>We report the first experimental results on the design and fabrication of nanoscale on-wafer calibration standards operating up to 110 GHz. The propagation constant and effective permittivity of coplanar waveguide (CPW) transmission…

EPJ Web of Conferences, 2025, 22nd International Metrology Congress (CIM2025), 323, ⟨10.1051/epjconf/202532312003⟩. ⟨hal-05065878⟩

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Tunable Topological Directional Supercoupler and Applications in THz On‐Chip Communication

Ridong Jia, Wenhao Wang, Yi Ji Tan, Thomas Caiwei Tan, Manoj Gupta, Zhonghua Gu, Prakash Pitchappa, Pascal Szriftgiser, Guillaume Ducournau, Ranjan Singh

A photonic directional coupler plays a critical role in photonic integrated circuits and communication technologies, facilitating precise power distribution for multi-channel data routing and transmission. However, conventional directional couplers face limitations in further optimizing the…

Laser and Photonics Reviews, In press, ⟨10.1002/lpor.202501209⟩. ⟨hal-05308730⟩