arXiv subjects

Ryszard Piramidowicz

Publications and source records attributed to Ryszard Piramidowicz.

2 recordsLinked to original sources

arXiv2026

Infrared photonics for healthcare: A roadmap for proactive and predictive health management

The field of infrared (IR) photonics is currently undergoing remarkable progress, moving rapidly towards practical sensing applications demanded by medical therapy and diagnostics (theranostics). The Developments can be divided into three main categories: (i) novel devices and measurement concepts including advanced updates of classical approaches that push medical sensing into the spotlight; (ii) new demonstrations of photonic integrated circuit (PIC-)based IR devices enabling highly miniaturized sensors for point-of-care application as well as medical and wellness wearables; and (iii) technologically-mature IR demonstrators that enable first medical sensing and treatment applications. This roadmap paper provides a consolidated overview of this highly dynamic and interdisciplinary research field with a focus on the major roadblocks that limit the widespread adoption of IR photonics in large-scale medical diagnostics. Special attention is given to the ambivalence between the molecular-level spectroscopic interpretation and a broader health-state assessment, highlighting the need for a common framework. Additionally, the paper discusses the critical importance of unified measurement standards, calibration protocols, and medical certification processes to ensure the validity of experimental results, reproducibility, and clinical trust, particularly when novel experimental techniques and AI algorithms are involved. Perspectives from major past and current contributors to application-oriented IR photonics will be provided.

physics.app-ph↗

arXiv2025

Integrated plasmo-photonic sensor with voltage controled detection

In this paper, we propose and analyze a waveguide-integrated interferometric sensor in which interference occurs between two plasmonic modes propagating in a single plasmonic waveguide. For the purpose of sensing, the vertical plasmonic slot waveguide was rearranged by increasing the distance between the metal electrodes. Consequently, the plasmonic modes associated with each metal electrode have been separated, enabling them to propagate independently on opposing edges of metal electrodes what allows for the implementation of a Mach-Zehnder interferometer. The metal electrodes that support the plasmonic modes can also function as electrical contacts. By applying a DC voltage between them, it is possible to efficiently separate ions that drift to one of the metal electrodes. Consequently, any change in a transmission from the interferometer refers only to the amount of ions in a liquid as the output signal from the interferometer is normalized to a liquid by the reference arm which is in direct contact with the examined liquid solution. The total amount of ions in the examined liquid remains constant, however, what changes is their distribution in the gap as the ions drift toward one of the metal electrodes when a voltage is applied. The proposed configuration is highly sensitive to variations in transmission between the two arms of the interferometer, enabling a record sensitivity of over 12460 nm/RIU, even at the telecom wavelength of 1550 nm. A further enhancement in sensitivity is expected in the mid-infrared wavelengths, which correspond to the maximum absorption peaks of most chemical and biological compounds.

physics.optics↗