Wearable Devices for Respiratory Monitoring

BA Vicente, R Sebastião… - Advanced Functional …, 2024 - Wiley Online Library
Respiratory diseases are currently monitored through traditional pulmonary function tests,
such as spirometry. However, the restrictions of these procedures, particularly in the context …

Graphene enhanced flexible piezoelectric transducers for dynamic strain measurement: from material preparation to application

J He, Z Fang, C Gao, W Zhang… - Smart Materials and …, 2023 - iopscience.iop.org
In this study, graphene particles are introduced to the lead magnesium niobate-lead titanate
and polyvinylidene fluoride (PVDF) to form a flexible ternary composite. The graphene …

Self-sensing piezoelectric bistable laminates for morphing structures

VSC Chillara, AK Ramanathan… - Smart Materials and …, 2020 - iopscience.iop.org
Bistable laminates offer opportunities for shape morphing, energy harvesting, and flow
control devices. Smart materials such as piezoelectric macrofiber composites and shape …

Flexible piezoelectric composite sensor for impact monitoring of curved structures

S Jiang, Y Shen, S Wang, W Jiang, Y Liu… - Sensors and Actuators A …, 2023 - Elsevier
Impact monitoring is an important research topic within aircraft structural health monitoring.
Piezoelectric lead zirconate titanate (PZT) ceramics are commonly used as sensors for …

Voltage drift compensation in charge amplifiers for DC measurements: Application to piezoelectric paint sensors

I Payo, M Sánchez, D Rodríguez, S Juárez - Measurement, 2022 - Elsevier
Voltage drift over time in charge amplifiers is a problem not fully solved yet for DC
measurements and continues to be a challenge for the scientific community. In this study we …

Implantable physical sensors for in vivo organ monitoring

X Li, X Huang, L Yang, S Jung, J Wang, H Zhao - Med-X, 2025 - Springer
Implantable sensors can provide access to accurate, continuous, and minimally invasive
monitoring of physiological signals from internal organs and tissues, thereby facilitating …

Differential pressure sensor using flexible piezoelectrics with pyroelectric compensation

AK Ramanathan, LM Headings… - Smart Materials and …, 2021 - iopscience.iop.org
Polyvinylidene fluoride (PVDF) is a mechanically tough, low density piezoelectric polymer
commercially available as a flexible film that can be conformed to arbitrarily-shaped surfaces …

Low-frequency compensation of piezoelectric force sensors for servo systems

YS Lu, YJ Lyu, JW Jeng - Measurement Science and Technology, 2022 - iopscience.iop.org
This paper presents a force/disturbance observer that compensates for the low-frequency
response of a piezoelectric force sensor. Although the piezoelectric force sensor has many …

Polyvinylindene Fluoride (PVDF) Films for Near-static Measurement Applications

AK Ramanathan - 2021 - rave.ohiolink.edu
Flexible sensors can be seamlessly integrated into arbitrarily curved surfaces including
artificial skins, automotive structures, and wind sensing systems. Polyvinylidene fluoride …

Preliminary investigation of a differential pressure sensor using flexible piezoelectrics with pyroelectric compensation

AK Ramanathan, LM Headings… - Smart Structures and …, 2020 - spiedigitallibrary.org
Pressure sensors that can provide both high temporal and spatial resolutions are desired for
the measurement of aerodynamic and acoustic events, ultrasonics, and underwater …