Photothermal Nanomaterials: A Powerful Light-to-Heat Converter

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(11), P. 6891 - 6952

Published: May 3, 2023

All forms of energy follow the law conservation energy, by which they can be neither created nor destroyed. Light-to-heat conversion as a traditional yet constantly evolving means converting light into thermal has been enduring appeal to researchers and public. With continuous development advanced nanotechnologies, variety photothermal nanomaterials have endowed with excellent harvesting capabilities for exploring fascinating prospective applications. Herein we review latest progresses on nanomaterials, focus their underlying mechanisms powerful light-to-heat converters. We present an extensive catalogue nanostructured materials, including metallic/semiconductor structures, carbon organic polymers, two-dimensional materials. The proper material selection rational structural design improving performance are then discussed. also provide representative overview techniques probing photothermally generated heat at nanoscale. finally recent significant developments applications give brief outlook current challenges future directions nanomaterials.

Language: Английский

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Technology Roadmap for Flexible Sensors

ACS Nano, Journal Year: 2023, Volume and Issue: 17(6), P. 5211 - 5295

Published: March 9, 2023

Humans rely increasingly on sensors to address grand challenges and improve quality of life in the era digitalization big data. For ubiquitous sensing, flexible are developed overcome limitations conventional rigid counterparts. Despite rapid advancement bench-side research over last decade, market adoption remains limited. To ease expedite their deployment, here, we identify bottlenecks hindering maturation propose promising solutions. We first analyze achieving satisfactory sensing performance for real-world applications then summarize issues compatible sensor-biology interfaces, followed by brief discussions powering connecting sensor networks. Issues en route commercialization sustainable growth sector also analyzed, highlighting environmental concerns emphasizing nontechnical such as business, regulatory, ethical considerations. Additionally, look at future intelligent sensors. In proposing a comprehensive roadmap, hope steer efforts towards common goals guide coordinated development strategies from disparate communities. Through collaborative efforts, scientific breakthroughs can be made sooner capitalized betterment humanity.

Language: Английский

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Bioadhesive ultrasound for long-term continuous imaging of diverse organs

Science, Journal Year: 2022, Volume and Issue: 377(6605), P. 517 - 523

Published: July 28, 2022

Continuous imaging of internal organs over days could provide crucial information about health and diseases enable insights into developmental biology. We report a bioadhesive ultrasound (BAUS) device that consists thin rigid probe robustly adhered to the skin via couplant made soft, tough, antidehydrating, hydrogel-elastomer hybrid. The BAUS provides 48 hours continuous diverse organs, including blood vessels, muscle, heart, gastrointestinal tract, diaphragm, lung. diagnostic monitoring tools for various diseases.

Language: Английский

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A wearable cardiac ultrasound imager

Nature, Journal Year: 2023, Volume and Issue: 613(7945), P. 667 - 675

Published: Jan. 25, 2023

Abstract Continuous imaging of cardiac functions is highly desirable for the assessment long-term cardiovascular health, detection acute dysfunction and clinical management critically ill or surgical patients 1–4 . However, conventional non-invasive approaches to image function cannot provide continuous measurements owing device bulkiness 5–11 , existing wearable devices can only capture signals on skin 12–16 Here we report a ultrasonic continuous, real-time direct assessment. We introduce innovations in design material fabrication that improve mechanical coupling between human skin, allowing left ventricle be examined from different views during motion. also develop deep learning model automatically extracts ventricular volume recording, yielding waveforms key performance indices such as stroke volume, output ejection fraction. This technology enables dynamic monitoring with substantially improved accuracy various environments.

Language: Английский

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Digital health for aging populations

Nature Medicine, Journal Year: 2023, Volume and Issue: 29(7), P. 1623 - 1630

Published: July 1, 2023

Language: Английский

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A fully integrated wearable ultrasound system to monitor deep tissues in moving subjects

Nature Biotechnology, Journal Year: 2023, Volume and Issue: unknown

Published: May 22, 2023

Language: Английский

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Transparent Electronics for Wearable Electronics Application

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(16), P. 9982 - 10078

Published: Aug. 5, 2023

Recent advancements in wearable electronics offer seamless integration with the human body for extracting various biophysical and biochemical information real-time health monitoring, clinical diagnostics, augmented reality. Enormous efforts have been dedicated to imparting stretchability/flexibility softness electronic devices through materials science structural modifications that enable stable comfortable of these curvilinear soft body. However, optical properties are still early stages consideration. By incorporating transparency, visual from interfacing biological systems can be preserved utilized comprehensive diagnosis image analysis techniques. Additionally, transparency provides imperceptibility, alleviating reluctance wear device on exposed skin. This review discusses recent advancement transparent a way includes materials, processing, devices, applications. Materials discussed regarding their characteristics, synthesis, engineering strategies property enhancements. We also examine bridging techniques Building blocks systems, including sensors, energy actuators, displays, mechanisms performances. Lastly, we summarize potential applications conclude remaining challenges prospects.

Language: Английский

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Peptide-enhanced tough, resilient and adhesive eutectogels for highly reliable strain/pressure sensing under extreme conditions

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Nov. 5, 2022

Abstract Natural gels and biomimetic hydrogel materials have been able to achieve outstanding integrated mechanical properties due the gain of natural biological structures. However, nearly every structure relies on water as solvents or carriers, which limits possibility in extreme conditions, such sub-zero temperatures long-term application. Here, peptide-enhanced eutectic were synthesized by introducing α-helical “molecular spring” into deep solvent. The gel takes full advantage structure, achieving high tensile/compression, good resilience, superior fracture toughness, excellent fatigue resistance strong adhesion, while it also inherits benefits solvent solves problems volatilization freezing. This enables unprecedentedly long stable sensing human motion movement. electrical signal shows almost no drift even after 10,000 deformations for 29 hours −20 °C 80 temperature range.

Language: Английский

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Highly conductive tissue-like hydrogel interface through template-directed assembly

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: April 18, 2023

Abstract Over the past decade, conductive hydrogels have received great attention as tissue-interfacing electrodes due to their soft and tissue-like mechanical properties. However, a trade-off between robust properties good electrical has prevented fabrication of tough, highly hydrogel limited its use in bioelectronics. Here, we report synthetic method for realization mechanically tough with modulus. We employed template-directed assembly method, enabling arrangement disorder-free, highly-conductive nanofibrous network inside stretchable, hydrated network. The resultant exhibits ideal material. Furthermore, it can provide adhesion (800 J/m 2 ) diverse dynamic wet tissue after chemical activation. This enables suture-free adhesive-free, high-performance successfully demonstrated ultra-low voltage neuromodulation high-quality epicardial electrocardiogram (ECG) signal recording based on vivo animal models. provides platform interfaces various bioelectronic applications.

Language: Английский

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Wearable artificial intelligence biosensor networks

Biosensors and Bioelectronics, Journal Year: 2022, Volume and Issue: 219, P. 114825 - 114825

Published: Oct. 21, 2022

The demand for high-quality healthcare and well-being services is remarkably increasing due to the ageing global population modern lifestyles. Recently, integration of wearables artificial intelligence (AI) has attracted extensive academic technological attention its powerful high-dimensional data processing wearable biosensing networks. This work reviews recent developments in AI-assisted devices disease diagnostics fatigue monitoring demonstrating trend towards personalised medicine with highly efficient, cost-effective, accurate point-of-care diagnosis by finding hidden patterns detecting abnormalities. reliability adaptive learning synthetic privacy still need further investigation realise next decade. Due worldwide popularity smartphones, they have been utilised sensor readout, wireless transfer, storage, result display, cloud server communication leading development smartphone-based systems. advances demonstrated a promising future system because power, transfer efficiency storage capacity diversifying functionalities.

Language: Английский

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