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Sensors, Volume 25, Issue 12

June-2 2025 - 264 articles

Cover Story: Gas-sensing technologies play a vital role across diverse fields, ranging from environmental monitoring and industrial process control to medical diagnostics and security applications. The integration of photonic–piezoelectric components is a key factor in offering rugged and portable sensing devices. This research demonstrates a compact optical gas-sensing system integrating silicon nitride waveguide with a custom-designed quartz tuning fork for trace gas detection. The system employs both quartz-enhanced photoacoustic spectroscopy and light-induced thermoelastic spectroscopy techniques, achieving comparable signal-to-noise ratios when detecting 1.6% water vapor concentration. The compact nature of this architecture also opens the way to multiplexed sensing via integrating multiple waveguides and laser sources on a single chip. View this paper
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Articles (264)

  • Article
  • Open Access
822 Views
21 Pages

19 June 2025

Salt concentration monitoring is crucial for industrial process control and wastewater management, yet existing methods often lack real-time capability or require invasive sampling. This paper presents a novel RFID wireless sensing system for noninva...

  • Article
  • Open Access
951 Views
31 Pages

Length–Weight Distribution of Non-Zero Elements in Randomized Bit Sequences

  • Christoph Lange,
  • Andreas Ahrens,
  • Yadu Krishnan Krishnakumar and
  • Olaf Grote

19 June 2025

Randomness plays an important role in data communication as well as in cybersecurity. In the simulation of communication systems, randomized bit sequences are often used to model a digital source information stream. Cryptographic outputs should look...

  • Article
  • Open Access
986 Views
13 Pages

Fiber-Coupled Multipass NIR Sensor for In Situ, Real-Time Water Vapor Outgassing Monitoring

  • Logan Echeveria,
  • Yue Hao,
  • Michael C. Rushford,
  • Gerardo Chavez,
  • Sean Tardif,
  • Allan Chang,
  • Sylvie Aubry,
  • Maxwell Murialdo,
  • J. Chance Carter and
  • Brandon Foley
  • + 3 authors

19 June 2025

This work presents the recent development of a fiber-coupled multipass near-infrared (NIR) gas sensor used to monitor water vapor desorption of small material coupons. The gas sensor design employs a White cell topology to maximize the optical path l...

  • Article
  • Open Access
663 Views
22 Pages

19 June 2025

This paper proposes a multi-party verifiably collaborative system for encrypting the nonlinear and the non-stationary biomedical signals captured by biomedical sensors via the singular spectrum analysis (SSA)-based chaotic networks. In particular, th...

  • Article
  • Open Access
2 Citations
2,965 Views
22 Pages

A Spectral Interpretable Bearing Fault Diagnosis Framework Powered by Large Language Models

  • Panfeng Bao,
  • Wenjun Yi,
  • Yue Zhu,
  • Yufeng Shen and
  • Haotian Peng

19 June 2025

Most existing fault diagnosis methods, although capable of extracting interpretable features such as attention-weighted fault-related frequencies, remain essentially black-box models that provide only classification results without transparent reason...

  • Review
  • Open Access
4 Citations
1,116 Views
28 Pages

19 June 2025

Deep tillage is a conservation tillage method that aims to break the plow pan layer. It provides significant benefits, including enhanced root development, improved soil quality, and substantial increases in crop yields. The depth of tillage is a cru...

  • Article
  • Open Access
1,054 Views
19 Pages

Research on Time Constant Test of Thermocouples Based on QNN-PID Controller

  • Chenyang Xu,
  • Xiaojian Hao,
  • Pan Pei,
  • Tong Wei and
  • Shenxiang Feng

19 June 2025

The aim of this study is to solve the problem of it being difficult to obtain quantitative step signals when testing the time constant of thermocouples using the laser excitation method, thereby restricting the accuracy and repeatability of the test...

  • Article
  • Open Access
2 Citations
2,315 Views
25 Pages

A Portable Insole System for Actively Controlled Offloading of Plantar Pressure for Diabetic Foot Care

  • Pedro Castro-Martins,
  • Arcelina Marques,
  • Luís Pinto-Coelho,
  • Pedro Fonseca and
  • Mário Vaz

19 June 2025

Plantar pressure monitoring is decisive in injury prevention, especially in at-risk populations such as people with diabetic foot. In this context, innovative solutions such as pneumatic insoles can be essential in plantar pressure management. This s...

  • Article
  • Open Access
1 Citations
1,836 Views
17 Pages

The Reliability and Validity of an Instrumented Device for Tracking the Shoulder Range of Motion

  • Rachel E. Roos,
  • Jennifer Lambiase,
  • Michelle Riffitts,
  • Leslie Scholle,
  • Simran Kulkarni,
  • Connor L. Luck,
  • Dharma Parmanto,
  • Vayu Putraadinatha,
  • Made D. Yoga and
  • Stephany N. Lang
  • + 9 authors

18 June 2025

Rotator cuff tears are common in individuals over 40, and physical therapy is often prescribed post-surgery. However, access can be limited by cost, convenience, and insurance coverage. CuffLink is a telehealth rehabilitation system that integrates t...

  • Article
  • Open Access
6 Citations
5,318 Views
26 Pages

18 June 2025

Vegetation indices have long been central to vegetation monitoring through remote sensing. The most popular one is the Normalized Difference Vegetation Index (NDVI), yet many vegetation indices (VIs) exist. In this paper, we investigate their distinc...

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Sensors - ISSN 1424-8220