Advancing pressure sensors performance through a flexible MXene embedded interlocking structure in a microlens array

Li, Tong; Xu, Zhenzong; Xu, Ben Bin; Guo, Zhanhu; Jiang, Yunhong; Zhang, Xuehua; Bayati, Maryam; Liu, Xiaoteng; Liu, Yanhua

doi:10.1007/s12274-023-5727-6

Cited by 17 publications

(4 citation statements)

References 51 publications

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Section: Emerging Applications Of Smasmentioning

confidence: 99%

“…Interlocking SMAs have been fabricated to augment the contact area. Liu et al significantly boosted sensor sensitivity to 21.04 kPa –1 by interlocking two microlens arrays with MXene layers and achieved a swift response time of 31 ms (Figure c) . Ko et al enhanced sensitivity by adorning PDMS microcolumns with ZnO nanowire arrays, creating a responsive hierarchical interlocking micronanostructure …”

Section: Emerging Applications Of Smasmentioning

confidence: 99%

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Soft Microstructure Arrays: A Multifunctional Microsystem for Mass Transport, Energy Transformation, and Surface Manipulation

Li,

Yin,

Huang

2024

ACS Materials Lett.

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Soft materials in ordered microstructures, soft microstructure arrays (SMAs), hold the potential to combine polymer science, surface physics and chemistry, and structural mechanics into an integrated microsystem for a wide spectrum of applications, due to their high specific-area contact surfaces with tunable physical and chemical properties, parallel addressability with high resolution, structural response to a wide range of electromagnetic waves, and mechanical flexibility and elasticity. Inspired by the everyday presence in Nature, such as the lotus leaves that repel water, brilliant hues on butterfly wings, and clingy toes of tree frogs, rationally designed SMAs have witnessed an explosive evolution in the past several years. This paper provides a comprehensive review of the latest progress of SMAs, focusing on the incorporated functionality and their use as smart and programmable systems for the purpose of mass transport, energy transformation, and surface manipulation. The exciting advances of SMAs in lithography, microactuators, biomedical patching, mechanical sensing, superwettability, and surface adhesion are featured. Finally, we highlight the remaining challenges and present future outlooks for SMA's advancement. This review condenses key discoveries from various SMA-related fields into one place and cultivates shared insights and endeavors to stimulate the development of next-generation soft materials and systems.

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Section: Emerging Applications Of Smasmentioning

confidence: 99%

Section: Emerging Applications Of Smasmentioning

confidence: 99%

Soft Microstructure Arrays: A Multifunctional Microsystem for Mass Transport, Energy Transformation, and Surface Manipulation

Li,

Yin,

Huang

2024

ACS Materials Lett.

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“…Considering the limitations of using photomasks in conventional lithography, Gao et al 27 employed a maskless grayscale digital lithography method based on a digital micromirror device (DMD) to prepare various micropattern structures, including microcone structures. Li et al 28 fabricated microlens structures that were applied to pressure sensors based on the grayscale digital lithography method, and they yielded remarkable results. The preparation of microcone structures using grayscale lithography and their application in pressure sensors requires further investigation; however, the DMD-based optical system has a complex setup.…”

Section: Introductionmentioning

confidence: 99%

Laser speckle grayscale lithography: a new tool for fabricating highly sensitive flexible capacitive pressure sensors

Zhou,

Wang,

Mao

et al. 2024

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Achieving a high sensitivity for practical applications has always been one of the main developmental directions for wearable flexible pressure sensors. This paper introduces a laser speckle grayscale lithography system and a novel method for fabricating random conical array microstructures using grainy laser speckle patterns. Its feasibility is attributed to the autocorrelation function of the laser speckle intensity, which adheres to a first-order Bessel function of the first kind. Through objective speckle size and exposure dose manipulations, we developed a microstructured photoresist with various micromorphologies. These microstructures were used to form polydimethylsiloxane microstructured electrodes that were used in flexible capacitive pressure sensors. These sensors exhibited an ultra-high sensitivity:19.76 kPa -1 for the low-pressure range of 0-100 Pa. Their minimum detection threshold was 1.9 Pa, and they maintained stability and resilience over 10,000 ACCEPTED ARTICLE PREVIEW test cycles. These sensors proved to be adept at capturing physiological signals and providing tactile feedback, thereby emphasizing their practical value.

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“…Mxenes, as a new type of 2D transition-metal carbides, carbonatites, and nitrides, have been broadly applied in the fields of energy storage, catalysis, sensing, and clinical diagnosis due to the properties of hydrophilic surfaces, large interlayer spacing, and biocompatibility/biodegradability. − Moreover, it was found that MXenes present broad-spectrum redox-mediated ROS scavenging abilities against various ROS (H 2 O 2 , ·OH, and O 2 – ) and excellent antibacterial abilities to both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus, exhibiting great potential in wound healing and repair. − …”

Section: Introductionmentioning

confidence: 99%

Green, pH-Sensitive, Highly Stretchable, and Hydrogen Bond-Dominated Ionogel for Wound Healing Activity

Zhi,

Wang,

Zhang

et al. 2023

ACS Appl. Bio Mater.

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Traditional hydrogel dressings generally have poor mechanical properties and stability when subjected to external stress due to the undesirable chain entanglement structure of their single valence bond compositions. Therefore, it is particularly important to develop a type of gel dressing with good mechanical strength, stability, and environment-friendly monitoring. In this work, a transparent, pH-sensitive, highly stretchable, and biocompatible anthocyanidin ionogel dressing was prepared, realizing green and accurate detection. Attributed to the antibacterial activity of the ionic liquid, the biocompatibility of the pectin, and the ability to scavenge free radicals of the anthocyanidin, the ionogel dressing exhibited excellent reepithelialization in the 14 day wound healing process. Besides, changes in pH values monitoring of the ionogel over 3 days coincided with normal wound exudate. The obtained ionogel also showed good water retention, swelling properties, mechanical stretchability, and 5 week stability, illustrating great potential in wound dressings.

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Advancing pressure sensors performance through a flexible MXene embedded interlocking structure in a microlens array

Cited by 17 publications

References 51 publications

Soft Microstructure Arrays: A Multifunctional Microsystem for Mass Transport, Energy Transformation, and Surface Manipulation

Soft Microstructure Arrays: A Multifunctional Microsystem for Mass Transport, Energy Transformation, and Surface Manipulation

Laser speckle grayscale lithography: a new tool for fabricating highly sensitive flexible capacitive pressure sensors

Green, pH-Sensitive, Highly Stretchable, and Hydrogen Bond-Dominated Ionogel for Wound Healing Activity

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