A water destructible SnS<sub>2</sub>QD/PVA film based transient multifunctional sensor and machine learning assisted stimulus identification for non-invasive personal care diagnostics

Bokka, Naveen; Selamneni, Venkatarao; Sahatiya, Parikshit

doi:10.1039/d0ma00573h

Cited by 25 publications

(19 citation statements)

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“…4−9 Recent advances in the field of transient electronics employ a biodegradable arterial-pulse sensor for blood flow monitoring, 10 an implantable triboelectric nanogenerator for in vivo energy harvesting, 11 and a multifunctional sensor for noninvasive personal care diagnostics. 12 Of the currently reported transient devices, most consist of degradable encapsulant, substrate, and dielectric materials with nondegradable electronically active components (i.e., semiconductors and conductors). 13 Synthetic polymers serve as an attractive platform for the development of degradable semiconductors due to their ability to be rationally tuned by molecular design for exploration of desired morphological, electronic, and degradation properties.…”

Section: Introductionmentioning

confidence: 99%

“…With the pressing need for a sustainable future in the technology-driven 21st century, transient electronics have garnered much interest for their potential ability to degrade after a certain, designated lifetime or upon applied external stimuli. − Such degradable electronics would allow for (i) the reduction of our rapidly growing electronic waste, (ii) the elimination of secondary removal surgeries for implantable devices, and (iii) transience in the environment in which remote, widespread sensors can be deployed without necessity of recollection. − Recent advances in the field of transient electronics employ a biodegradable arterial-pulse sensor for blood flow monitoring, an implantable triboelectric nanogenerator for in vivo energy harvesting, and a multifunctional sensor for noninvasive personal care diagnostics …”

Section: Introductionmentioning

confidence: 99%

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Impact of Molecular Design on Degradation Lifetimes of Degradable Imine-Based Semiconducting Polymers

et al. 2022

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Transient electronics are a rapidly emerging field due to their potential applications in the environment and human health. Recently, a few studies have incorporated acid-labile imine bonds into polymer semiconductors to impart transience; however, understanding of the structure−degradation property relationships of these polymers is limited. In this study, we systematically design and characterize a series of fully degradable diketopyrrolopyrrole-based polymers with engineered sidechains to investigate the impact of several molecular design parameters on the degradation lifetimes of these polymers. By monitoring degradation kinetics via ultraviolet−visible spectroscopy, we reveal that polymer degradation in solution is aggregationdependent based on the branching point and M n , with accelerated degradation rates facilitated by decreasing aggregation. Additionally, increasing the hydrophilicity of the polymers promotes water diffusion and therefore acid hydrolysis of the imine bonds along the polymer backbone. The aggregation properties and degradation lifetimes of these polymers rely heavily on solvent, with polymers in chlorobenzene taking six times as long to degrade as in chloroform. We develop a new method for quantifying the degradation of polymers in the thin film and observe that similar factors and considerations (e.g., interchain order, crystallite size, and hydrophilicity) used for designing high-performance semiconductors impact the degradation of imine-based polymer semiconductors. We found that terpolymerization serves as an attractive approach for achieving degradable semiconductors with both good charge transport and tuned degradation properties. This study provides crucial principles for the molecular design of degradable semiconducting polymers, and we anticipate that these findings will expedite progress toward transient electronics with controlled lifetimes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of Molecular Design on Degradation Lifetimes of Degradable Imine-Based Semiconducting Polymers

et al. 2022

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“…The integration of multiple sensors into one platform is often linked with significant increases in energy consumption and decreases in stability and reliability, while the sensing platform also suffers from signal interferences among the multiple sensing elements . Recently, some multifunctional sensors based on a single sensing element and machine learning have been developed. − However, how to detect multiple environmental parameters simultaneously using a single element is still a challenge.…”

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confidence: 99%

Machine Learning-Assisted Multifunctional Environmental Sensing Based on a Piezoelectric Cantilever

Liu

Zhu

et al. 2022

ACS Sens.

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Multifunctional environmental sensing is crucial for various applications in agriculture, pollution monitoring, and disease diagnosis. However, most of these sensing systems consist of multiple sensors, leading to significantly increased dimensions, energy consumption, and structural complexity. They also often suffer from signal interferences among multiple sensing elements. Herein, we report a multifunctional environmental sensor based on one single sensing element. A MoS 2 film was deposited on the surface of a piezoelectric microcantilever (300 × 1000 μm 2 ) and used as both a sensing layer and top electrode to make full use of the changes in multiple properties of MoS 2 after its exposure to various environments. The proposed sensor has been demonstrated for humidity detection and achieved high resolution (0.3% RH), low hysteresis (5.6%), and fast response (1 s) and recovery (2.8 s). Based on the analysis of the magnitude spectra for transmission using machine learning algorithms, the sensor accurately quantifies temperatures and CO 2 concentrations in the interference of humidity with accuracies of 91.9 and 92.1%, respectively. Furthermore, the sensor has been successfully demonstrated for real-time detection of humidity and temperature or CO 2 concentrations for various applications, revealing its great potential in human−machine interactions and health monitoring of plants and human beings.

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“…(a) Relative resistance responses of PVA/Gly-CNC/PVP/PEDOT after fabricating for 100 days. (b) Comparison of reported maximum gauge factor of PVA-based nanocomposites as a function of applied strain. ,,− …”

Section: Resultsmentioning

confidence: 99%

Sensitive, Stretchable, and Sustainable Conductive Cellulose Nanocrystal Composite for Human Motion Detection

Lee

Choi

Zhang

et al. 2021

ACS Sustainable Chem. Eng.

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Sensitive strain sensors (an important component of soft robotics, wearable devices, and biomedical electronics) with high sensitivity, stretchability, and long-term stability are still challenging. A sensitive, stretchable, and sustainable sensor using poly(3,4-ethylenedioxythiophene) (PEDOT) coated cellulose nanocrystals (CNC) with poly(vinyl alcohol)/glycerol (PVA/Gly) composite is proposed. The low cost and sustainable PEDOT coated CNC with high aspect ratio lowered the electrical percolation threshold that significantly improved the electrical conductivity leading to better sensitivity (gauge factor = 21.25) compared to the PEDOT applied film without CNC (gauge factor = 9.35). The exceptional stretchability of up to 500% and a low Young’s modulus with long-term stability exceeding 3 months are due to the glycerol plasticizer. The fabricated sensors possessed outstanding real-time strain sensing capability for a series of human motions, including complex joint bending motions, subtle muscle motions, wrist pulse, and excellent self-healing ability. This effective green strategy for preparing a highly stretchable conductive composite addresses current limitations in strain sensor preparation and offers a sustainable approach to sensor design and development.

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A water destructible SnS₂QD/PVA film based transient multifunctional sensor and machine learning assisted stimulus identification for non-invasive personal care diagnostics

Abstract: With the advent of the Internet of Things, where the millions of sensors are connected, they come with two important problems: disposability of the fabricated sensors and the accurate classification...

Cited by 25 publications

References 50 publications

Impact of Molecular Design on Degradation Lifetimes of Degradable Imine-Based Semiconducting Polymers

Impact of Molecular Design on Degradation Lifetimes of Degradable Imine-Based Semiconducting Polymers

Machine Learning-Assisted Multifunctional Environmental Sensing Based on a Piezoelectric Cantilever

Sensitive, Stretchable, and Sustainable Conductive Cellulose Nanocrystal Composite for Human Motion Detection

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A water destructible SnS2QD/PVA film based transient multifunctional sensor and machine learning assisted stimulus identification for non-invasive personal care diagnostics

Abstract: With the advent of the Internet of Things, where the millions of sensors are connected, they come with two important problems: disposability of the fabricated sensors and the accurate classification...

Cited by 25 publications

References 50 publications

Impact of Molecular Design on Degradation Lifetimes of Degradable Imine-Based Semiconducting Polymers

Impact of Molecular Design on Degradation Lifetimes of Degradable Imine-Based Semiconducting Polymers

Machine Learning-Assisted Multifunctional Environmental Sensing Based on a Piezoelectric Cantilever

Sensitive, Stretchable, and Sustainable Conductive Cellulose Nanocrystal Composite for Human Motion Detection

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Product

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A water destructible SnS₂QD/PVA film based transient multifunctional sensor and machine learning assisted stimulus identification for non-invasive personal care diagnostics