Highly sensitive and fast response Love wave mode humidity sensor based on MoS2@Ti3C2Tx hierarchical structure

Li, Chong; Tao, Ran; Li, Zhiqiong; Liao, Jiahui; Fu, Chen; Zhang, Jikai; Ong, Hui Ling; Lu, Chenze; Luo, Jingting; Fu, Yongqing

doi:10.1016/j.snb.2023.133823

Cited by 10 publications

(4 citation statements)

References 54 publications

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“…Theoretically, the frequency shifts can be attributed to changes in the physical parameters of the waveguide layer and piezoelectric substrate. As previously reported ,− : normalΔ v v 0 = normalΔ v v 0 [ normal∂ v 0 ∂ m Δ m + normal∂ v 0 ∂ e Δ e + normal∂ v 0 ∂ s Δ s + normal∂ v 0 ∂ en Δ en ] …”

Section: Results and Discussionmentioning

confidence: 58%

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Piezoelectric Layered Structure with Conductive Polymer Composites as a Waveguide Layer: Swelling Monitoring Based on the Propagation of Love-Type Wave

Wu,

Chen,

et al. 2024

ACS Appl. Polym. Mater.

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Conductive polymer composites (CPCs), characterized by adjustable material parameters and specific responsiveness to external stimuli, exhibit potential utility as waveguide layers on surface acoustic wave (SAW) devices for monitoring applications. In this study, we examine the effect of swelling on the propagation of Love-type waves by subjecting a layered structure composed of a 36°Y-X lithium tantalate (LT) substrate and CPC waveguide layer. Love-type waves are first identified, and the propagation characteristics are analyzed by simulation and experimental comparison on polydimethylsiloxane (PDMS)-based CPC waveguide layers, which are filled with different acetylene carbon black (ACB) mass fractions. The influence of Love-type wave propagation after being subjected to a chemical medium is further explored. The results show that the characteristic frequency shifts of the SAW device are related to the observed swelling response of the ACB/PDMS CPCs. The experimental results are in agreement with simulations, and the frequency shifts with waveguide layer thickness variation are theoretically verified. This study illustrates the use of CPCs as a waveguide layer to modulate the propagation of Love-type waves and explores their application prospects for swelling monitoring.

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Section: Results and Discussionmentioning

confidence: 58%

“…Theoretically, the frequency shifts can be attributed to changes in the physical parameters of the waveguide layer and piezoelectric substrate. As previously reported ,− : …”

Section: Results and Discussionmentioning

confidence: 95%

Piezoelectric Layered Structure with Conductive Polymer Composites as a Waveguide Layer: Swelling Monitoring Based on the Propagation of Love-Type Wave

Wu,

Chen,

et al. 2024

ACS Appl. Polym. Mater.

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“…Li et al developed a highly sensitive and stable MoS 2 @Ti 3 C 2 T x based humidity responsive actuator with a hierarchical structure, exhibiting an extremely excellent sensitivity of 0.67 kHz/% RH in the wide humidity range from 11.3% RH to 97.3% RH and this humidity responsive actuator showed fast response/recovery rates, great repeatability and long-term stability, indicating its great prospects in humidity detection applications. 91…”

Section: Mxene-based Responsive Soft Actuatorsmentioning

confidence: 99%

Stimuli responsive actuators: recent advances

Du,

Wang,

Chen

et al. 2024

J. Mater. Chem. C

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“…Accordion-like Ti 3 C 2 T x MXene was obtained from the parent MAX phase using an in situ HF etching method, as reported in our previous work (see the Supporting Information for more details) . As shown in Figure , Bi 2 S 3 nanobelts were synthesized using a conventional hydrothermal method .…”

Section: Experimental Sectionmentioning

confidence: 99%

Ti₃C₂T_x Nanosheet/Bi₂S₃ Nanobelt Composites for NO₂ Gas Sensing

Li,

Tao,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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Along with the revolution of the Internet of Things (IoT), smart, flexible, easily fabricated, and highly sensitive gas sensors are essential for many portable electronics. In this study, a wearable NO 2 sensor based on a nanomesh structure woven with Ti 3 C 2 T x microflakes and Bi 2 S 3 nanobelts operated at room temperature was successfully designed and prepared. The effects of the mass ratio between two materials on the performance were evaluated. Bi 2 S 3 nanobelts embedded inside accordion-like Ti 3 C 2 T x provide large specific surface areas and abundant active sites for the adsorption of NO 2 molecules. Attributed to the high conductivity of Ti 3 C 2 T x , the carriers generated in the sensitive layers are easily transmitted during sensing, thus significantly reducing the response and recovery times. The sensor based on the nanomesh containing 30 wt % Ti 3 C 2 T x exhibits excellent sensing performance, fast response/recovery rates, and high stability even in arbitrary deformed shape conditions. Upon exposure to 1 ppm NO 2 , the response of the sensor is 12.67, and the response/recovery times are 5/28 s, respectively. A stable sensing performance can be maintained after 1500 cycles of deformation. This work demonstrates a simple but reliable manufacturing strategy of wearable gas sensors for the next generation of IoT monitoring network-linking human activities.

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Highly sensitive and fast response Love wave mode humidity sensor based on MoS2@Ti3C2Tx hierarchical structure

Cited by 10 publications

References 54 publications

Piezoelectric Layered Structure with Conductive Polymer Composites as a Waveguide Layer: Swelling Monitoring Based on the Propagation of Love-Type Wave

Piezoelectric Layered Structure with Conductive Polymer Composites as a Waveguide Layer: Swelling Monitoring Based on the Propagation of Love-Type Wave

Stimuli responsive actuators: recent advances

Ti₃C₂T_x Nanosheet/Bi₂S₃ Nanobelt Composites for NO₂ Gas Sensing

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Highly sensitive and fast response Love wave mode humidity sensor based on MoS2@Ti3C2Tx hierarchical structure

Cited by 10 publications

References 54 publications

Piezoelectric Layered Structure with Conductive Polymer Composites as a Waveguide Layer: Swelling Monitoring Based on the Propagation of Love-Type Wave

Piezoelectric Layered Structure with Conductive Polymer Composites as a Waveguide Layer: Swelling Monitoring Based on the Propagation of Love-Type Wave

Stimuli responsive actuators: recent advances

Ti3C2Tx Nanosheet/Bi2S3 Nanobelt Composites for NO2 Gas Sensing

Contact Info

Product

Resources

About

Ti₃C₂T_x Nanosheet/Bi₂S₃ Nanobelt Composites for NO₂ Gas Sensing