Electronics and Biomedics Engineering Department Organisation/Company Universitat de Barcelona Department Electronics and Biomedics Engineering Department Research Field Engineering Technology Physics Researcher Profile First Stage Researcher (R1) Positions PhD Positions Application Deadline 1 Nov 2026 - 17:00 (Europe/Madrid) Country Spain Type of Contract Temporary Job Status Full-time Hours Per Week 37,5 Offer Starting Date 1 Feb 2027 Is the job funded through the EU Research Framework Programme? Horizon Europe - MSCA Marie Curie Grant Agreement Number 101312406 Is the Job related to staff position within a Research Infrastructure? No Offer Description The research project aims to investigate nonlinear mechanical and optomechanical phenomena in silicon-on-insulator nanophotonic cavities. In particular, the selected candidate will study how Casimir–Lifshitz forces modify the effective mechanical stiffness and nonlinear dynamics of nanostructures with nanometric gaps. The work will combine the design, simulation and experimental characterization of optomechanical cavities,



with particular emphasis on Casimir‑induced frequency shifts, Duffing nonlinearities, hysteresis, intermodulation and parametric amplification. Responsibilities and main tasks The doctoral candidate will: * Design and investigate SOI photonic‑crystal and slot cavities; perform optical and radio‑frequency characterization; analyse nonlinear mechanical dynamics; and compare experimental measurements with Casimir‑gradient and spring‑modulation models. * Contribute to the preparation of scientific publications, conference presentations, and project reports. * Participate actively in the research activities and scientific meetings of the research group. Scientific objectives * Objective 1 – Low risk: Quantify Casimir‑induced stiffness in SOI photonic‑crystal and slot cavities and validate the optical readout for dynamic studies. Verifiable goal: Extract Casimir‑induced frequency shifts from thermal‑noi

📌 PhD candidate in Nanoscience. Title: Nonlinear Casimir–Optomechanics on SOI Nanophotonic Cavities (Pamplona)
🏢 Universitat De Barcelona
📍 Pamplona