scholarly journals Multilayered Composites with Modulus Gradient for Enhanced Pressure—Temperature Sensing Performance

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4752
Author(s):  
Changyoon Jeong ◽  
Sang-Ha Hwang ◽  
Byeong-Joo Kim ◽  
Han Gi Chae ◽  
Young-Bin Park
Keyword(s):  
Human Motion ◽  
Temperature Sensing ◽  
Temperature Detection ◽  
Highly Sensitive ◽  
Wide Range ◽  
Potential Applications ◽  
Multilayered Composites ◽  
Weight Sensing ◽  
Human Motion Monitoring ◽  
Sensing Performance

Highly sensitive and flexible composite sensors with pressure and temperature sensing abilities are of great importance in human motion monitoring, robotic skins, and automobile seats when checking the boarding status. Several studies have been conducted to improve the temperature-pressure sensitivity; however, they require a complex fabrication process for micro-nanostructures, which are material-dependent. Therefore, there is a need to develop the structural designs to improve the sensing abilities. Herein, we demonstrate a flexible composite with an enhanced pressure and temperature sensing performance. Its structural design consists of a multilayered composite construction with an elastic modulus gradient. Controlled stress concentration and distribution induced by a micropatterned structure between the layers improves its pressure and temperature sensing performance. The proposed composite sensor can monitor a wide range of pressure and temperature stimuli and also has potential applications as an automotive seat sensor for simultaneous human temperature detection and occupant weight sensing.

scholarly journals State of the Science in Dried Blood Spots

2018 ◽  
Vol 64 (4) ◽  
pp. 656-679 ◽  
Author(s):  
Jeffrey D Freeman ◽  
Lori M Rosman ◽  
Jeremy D Ratcliff ◽  
Paul T Strickland ◽  
David R Graham ◽  
...  
Keyword(s):  
Systematic Approach ◽  
Full Range ◽  
Dried Blood Spots ◽  
Blood Spots ◽  
Highly Sensitive ◽  
Wide Range ◽  
Potential Applications ◽  
Review Of Reviews ◽  
Near Term ◽  
State Of The Science

Abstract BACKGROUND Advancements in the quality and availability of highly sensitive analytical instrumentation and methodologies have led to increased interest in the use of microsamples. Among microsamples, dried blood spots (DBS) are the most well-known. Although there have been a variety of review papers published on DBS, there has been no attempt at describing the full range of analytes measurable in DBS, or any systematic approach published for characterizing the strengths and weaknesses associated with adoption of DBS analyses. CONTENT A scoping review of reviews methodology was used for characterizing the state of the science in DBS. We identified 2018 analytes measured in DBS and found every common analytic method applied to traditional liquid samples had been applied to DBS samples. Analytes covered a broad range of biomarkers that included genes, transcripts, proteins, and metabolites. Strengths of DBS enable its application in most clinical and laboratory settings, and the removal of phlebotomy and the need for refrigeration have expanded biosampling to hard-to-reach and vulnerable populations. Weaknesses may limit adoption in the near term because DBS is a nontraditional sample often requiring conversion of measurements to plasma or serum values. Opportunities presented by novel methodologies may obviate many of the current limitations, but threats around the ethical use of residual samples must be considered by potential adopters. SUMMARY DBS provide a wide range of potential applications that extend beyond the reach of traditional samples. Current limitations are serious but not intractable. Technological advancements will likely continue to minimize constraints around DBS adoption.

A family of doped lanthanide metal–organic frameworks for wide-range temperature sensing and tunable white light emission

2017 ◽  
Vol 5 (8) ◽  
pp. 1981-1989 ◽  
Author(s):  
Yan Yang ◽  
Lian Chen ◽  
Feilong Jiang ◽  
Muxin Yu ◽  
Xiuyan Wan ◽  
...  
Keyword(s):  
White Light ◽  
High Stability ◽  
Light Emission ◽  
Metal Organic Frameworks ◽  
Temperature Sensing ◽  
White Leds ◽  
Wide Range ◽  
Potential Applications ◽  
Metal Organic ◽  
Lanthanide Metal

A series of binary and ternary mixed LnMOFs with high stability showing potential applications in wide-range thermosensors and white LEDs are reported.

Large-scale assembly of highly sensitive Si-based flexible strain sensors for human motion monitoring

Nanoscale ◽  
2016 ◽  
Vol 8 (4) ◽  
pp. 2123-2128 ◽  
Author(s):  
Bing-Chang Zhang ◽  
Hui Wang ◽  
Yu Zhao ◽  
Fan Li ◽  
Xue-Mei Ou ◽  
...  
Keyword(s):  
Large Scale ◽  
Human Motion ◽  
Strain Sensors ◽  
Highly Sensitive ◽  
Human Motion Monitoring

Wearable and Highly Sensitive Graphene Strain Sensors for Human Motion Monitoring

2014 ◽  
Vol 24 (29) ◽  
pp. 4666-4670 ◽  
Author(s):  
Yan Wang ◽  
Li Wang ◽  
Tingting Yang ◽  
Xiao Li ◽  
Xiaobei Zang ◽  
...  
Keyword(s):  
Human Motion ◽  
Strain Sensors ◽  
Highly Sensitive ◽  
Human Motion Monitoring

A Portable and Automated Postural Perturbation System for Balance Assessment, Training, and Neuromuscular System Identification

2008 ◽  
Vol 2 (4) ◽  
Author(s):  
Albert H. Vette ◽  
Egor Sanin ◽  
Abdulkadir Bulsen ◽  
Alan Morris ◽  
Kei Masani ◽  
...  
Keyword(s):  
Treadmill Walking ◽  
Displacement Velocity ◽  
Postural Perturbation ◽  
Peak Displacement ◽  
Highly Sensitive ◽  
Wide Range ◽  
Potential Applications ◽  
Postural Perturbations ◽  
Accuracy And Repeatability

To date, a postural perturbation system capable of generating position-, velocity-, and force-controlled perturbations while being portable and suitable for use during various postural scenarios does not exist. Therefore, the purpose of the present study was to design, develop, and test a portable and automated postural perturbation system (PAPPS) that can be used to measure and train postural reactions during sitting, standing, and treadmill walking. The core component of the PAPPS was a linear actuator that provides horizontal perturbations. The actuator could generate arbitrary displacement, velocity, or force perturbations as a function of time. In addition, the PAPPS was able to measure the actuator’s displacement, velocity, and load, which could be used to study postural perturbation responses. The height at which the PAPPS was delivering the perturbations could be easily adjusted to allow for different subject/patient anthropometrics and a wide range of postural scenarios such as sitting, standing, and treadmill walking. The PAPPS generated a peak displacement of 0.6m, a peak velocity of 0.5m∕s, and a peak force of 600N, which is more than sufficient to elicit high intensity postural perturbations. Multiple and nested safety circuits have been implemented into the PAPPS to ensure the safety of the subjects/patients during experiments and/or training. To evaluate the accuracy and repeatability of the PAPPS during position-, velocity-, and force-controlled perturbations, experiments were conducted using sinusoidal, impulse, and ramp profiles as a function of time. Highly sensitive displacement and force sensors that were external to the PAPPS were used to determine the accuracy and repeatability of the proposed device. In addition, a case study was performed to demonstrate the performance of the PAPPS during pseudorandom sinusoidal perturbations that were applied to a healthy individual during sitting. The accuracy and repeatability tests suggest that the PAPPS can generate reliable and high-precision displacement, velocity, and force perturbations. Potential applications of this system include, but are not limited to (1) studies of postural response to various perturbation types and profiles in diverse subject populations during sitting, standing, and treadmill walking, and (2) training of postural balance in diverse patient populations during sitting, standing, and treadmill walking.

A photonic sintering derived Ag flake/nanoparticle-based highly sensitive stretchable strain sensor for human motion monitoring

Nanoscale ◽  
2018 ◽  
Vol 10 (17) ◽  
pp. 7890-7897 ◽  
Author(s):  
Inhyuk Kim ◽  
Kyoohee Woo ◽  
Zhaoyang Zhong ◽  
Pyungsam Ko ◽  
Yunseok Jang ◽  
...  
Keyword(s):  
Strain Sensor ◽  
Human Motion ◽  
Intense Pulsed Light ◽  
Sintering Process ◽  
Pulsed Light ◽  
Highly Sensitive ◽  
Highly Stretchable ◽  
Human Motion Monitoring ◽  
Photonic Sintering

A highly stretchable sensor with excellent sensitivity was obtained using an Ag flake/Ag NC hybrid by an intense pulsed light sintering process.

Degradable and highly sensitive CB-based pressure sensor with applications for speech recognition and human motion monitoring

2020 ◽  
Vol 55 (23) ◽  
pp. 10084-10094
Author(s):  
Jiaojie Meng ◽  
Peng Pan ◽  
Zhengchun Yang ◽  
Jun Wei ◽  
Qilin Wang ◽  
...  
Keyword(s):  
Speech Recognition ◽  
Pressure Sensor ◽  
Human Motion ◽  
Highly Sensitive ◽  
Human Motion Monitoring
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