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Sensors, Volume 25, Issue 4

February-2 2025 - 291 articles

Cover Story: The human growth hormone (hGH) is a polypeptide hormone synthesized and secreted by the anterior pituitary gland, with excess levels linked to acromegaly-inducing pituitary adenomas and deficiencies associated with conditions such as short stature and Turner’s syndrome. This study explores the real-time biosensing of hGH using a microfluidic optical biosensor based on Reflectometric Interference Fourier Transform Spectroscopy (RIFTS). The platform features a nanoporous anodic alumina (NAA) monolayer, fabricated via two-step anodization to achieve 30–35 nm pores, later widened to 45 nm for enhanced sensitivity. Surface functionalization further improves selectivity toward hGH. The system exhibits a linear detection range of 12.5–100 µg/mL with a detection limit of 10.6 µg/mL, offering a cost-effective, rapid, and portable biosensing solution for clinical and diagnostic applications. View this paper
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Articles (291)

  • Communication
  • Open Access
963 Views
16 Pages

19 February 2025

The imaging processes of optoelectronic devices are affected by vibration in the transportation platform, which can cause image shaking and blurring. Nowadays, devices often solve problems of image shaking and blurring using motion rotors. However, t...

  • Article
  • Open Access
1,018 Views
19 Pages

Predicting Perennial Ryegrass Cultivars and the Presence of an Epichloë Endophyte in Seeds Using Near-Infrared Spectroscopy (NIRS)

  • Simone Vassiliadis,
  • Kathryn M. Guthridge,
  • Priyanka Reddy,
  • Emma J. Ludlow,
  • Inoka K. Hettiarachchige and
  • Simone J. Rochfort

19 February 2025

Perennial ryegrass is an important temperate grass used for forage and turf worldwide. It forms symbiotic relationships with endophytic fungi (endophytes), conferring pasture persistence and resistance to herbivory. Endophyte performance can be influ...

  • Article
  • Open Access
4 Citations
2,598 Views
27 Pages

Evaluation of Long-Term Performance of Six PM2.5 Sensor Types

  • Karoline K. Barkjohn,
  • Robert Yaga,
  • Brittany Thomas,
  • William Schoppman,
  • Kenneth S. Docherty and
  • Andrea L. Clements

19 February 2025

From July 2019 to January 2021, six models of PM2.5 air sensors were operated at seven air quality monitoring sites across the U.S. in Arizona, Colorado, Delaware, Georgia, North Carolina, Oklahoma, and Wisconsin. Common PM sensor data issues were id...

  • Article
  • Open Access
10 Citations
3,540 Views
27 Pages

19 February 2025

With the increasing need for effective elderly care solutions, this paper presents a novel federated learning-based system that uses smartphones as edge devices to monitor and enhance elderly care in real-time. In this system, elderly individuals car...

  • Article
  • Open Access
1 Citations
1,136 Views
11 Pages

Hydrogenated Amorphous Silicon Charge-Selective Contact Devices on a Polyimide Flexible Substrate for Dosimetry and Beam Flux Measurements

  • Mauro Menichelli,
  • Saba Aziz,
  • Aishah Bashiri,
  • Marco Bizzarri,
  • Clarissa Buti,
  • Lucio Calcagnile,
  • Daniela Calvo,
  • Mirco Caprai,
  • Domenico Caputo and
  • Anna Paola Caricato
  • + 50 authors

19 February 2025

Hydrogenated amorphous silicon (a-Si:H) devices on flexible substrates are currently being studied for application in dosimetry and beam flux measurements. The necessity of in vivo dosimetry requires thin devices with maximal transparency and flexibi...

  • Article
  • Open Access
864 Views
25 Pages

Flexible Optimal Control of the CFBB Combustion System Based on ESKF and MPC

  • Lei Han,
  • Lingmei Wang,
  • Enlong Meng,
  • Yushan Liu and
  • Shaoping Yin

19 February 2025

In order to deeply absorb the power generation of new energy, coal-fired circulating fluidized bed units are widely required to participate in power grid dispatching. However, the combustion system of the units faces problems such as decreased contro...

  • Article
  • Open Access
1 Citations
1,566 Views
13 Pages

Physical Activity in Pre-Ambulatory Children with Cerebral Palsy: An Exploratory Validation Study to Distinguish Active vs. Sedentary Time Using Wearable Sensors

  • Julie M. Orlando,
  • Beth A. Smith,
  • Jocelyn F. Hafer,
  • Athylia Paremski,
  • Matthew Amodeo,
  • Michele A. Lobo and
  • Laura A. Prosser

19 February 2025

Wearable inertial sensor technology affords opportunities to record the physical activity of young children in their natural environments. The interpretation of these data, however, requires validation. The purpose of this study was to develop and es...

  • Article
  • Open Access
1 Citations
1,581 Views
46 Pages

19 February 2025

This paper deals with developing a comparative study of the principal time-domain system identification methods suitable for performing an experimental modal analysis of structural systems. To this end, this work focuses first on analyzing and review...

  • Article
  • Open Access
1 Citations
1,296 Views
15 Pages

Feasibility Study of Photoelectrochemical Sensing of Glucose and Urea Using BiVO4 and BiVO4/BiOCl Photoanodes

  • Monika Skruodiene,
  • Jelena Kovger-Jarosevic,
  • Irena Savickaja,
  • Jurga Juodkazyte and
  • Milda Petruleviciene

19 February 2025

This study investigates the photoelectrochemical (PEC) performance of molybdenum-doped bismuth vanadate (Mo-doped BiVO4) and its heterojunction with the BiOCl layer in glucose and urea sensing. Photoelectrochemical analyses, including cyclic voltamme...

  • Article
  • Open Access
3 Citations
1,224 Views
12 Pages

Circularly Polarized Reconfigurable MIMO Antenna for WLAN Applications

  • Tu Le-Tuan,
  • Thai Dinh Nguyen,
  • Nguyen Viet-Duc Tran,
  • Hung Tran and
  • Dat Nguyen-Tien

19 February 2025

This paper presents a simple design of a two-element antenna with circularly polarized (CP) reconfigurability for multiple-input multiple-output wireless local-area network (WLAN) applications. A MIMO element consists of a reconfigurable feeding netw...

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Sensors - ISSN 1424-8220