Thermal probe of vapor–liquid thermodynamic equilibrium

Khoshooei, Milad Ahmadi

doi:10.1007/s10973-021-10972-3

Cited by 3 publications

(1 citation statement)

References 141 publications

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“…The MicroSweat patch also comprises several vents, one for the whole system downstream of the main channel and others to draw air bubbles out of the sweat in the storage chambers. The vents located on top of the storage chambers are <300 µm in diameter to prevent sweat evaporation (based on the Langmuir's free evaporation equation in vacuum [ 11j,18 ] (see Section S4, Supporting Information) and help preserve the molecular contents of the sweat in the stored fibers. These components cooperate to remove air bubbles and provide a smooth laminar flow downstream of the main channel, thus providing continuous sweat flow into the patch.…”

Section: Resultsmentioning

confidence: 99%

MicroSweat: A Wearable Microfluidic Patch for Noninvasive and Reliable Sweat Collection Enables Human Stress Monitoring

et al. 2022

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Stress affects cognition, behavior, and physiology, leading to lasting physical and mental illness. The ability to detect and measure stress, however, is poor. Increased circulating cortisol during stress is mirrored by cortisol release from sweat glands, providing an opportunity to use it as an external biomarker for monitoring internal emotional state. Despite the attempts at using wearable sensors for monitoring sweat cortisol, there is a lack of reliable wearable sweat collection devices that preserve the concentration and integrity of sweat biomolecules corresponding to stress levels. Here, a flexible, self-powered, evaporation-free, bubble-free, surfactant-free, and scalable capillary microfluidic device, MicroSweat, is fabricated to reliably collect human sweat from different body locations. Cortisol levels are detected corresponding to severe stress ranging from 25 to 125 ng mL −1 averaged across multiple body regions and 100-1000 ng mL −1 from the axilla. A positive nonlinear correlation exists between cortisol concentration and stress levels quantified using the perceived stress scale (PSS). Moreover, owing to the sweat variation in response to environmental effects and physiological differences, the longitudinal and personalized profile of sweat cortisol is acquired, for the first time, for various body locations. The obtained sweat cortisol data is crucial for analyzing human stress in personalized and clinical healthcare sectors.

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Section: Resultsmentioning

confidence: 99%

MicroSweat: A Wearable Microfluidic Patch for Noninvasive and Reliable Sweat Collection Enables Human Stress Monitoring

et al. 2022

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Vaporization thermodynamics of normal alkyl phenones

Bolmatenkov

Notfullin

Yagofarov

et al. 2023

Journal of Molecular Liquids

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Thermogravimetric study of metal–organic precursors and their suitability for hybrid molecular beam epitaxy

Fazlioglu-Yalcin,

Hilse,

Engel-Herbert

2023

Journal of Materials Research

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Although metal–organic (MO) precursors are widely used in technologically relevant deposition techniques, reports on their temperature-dependent evaporation and decomposition behaviors are scarce. Here, MO precursors of the metals Ti, V, Al, Hf, Zr, Ge, Ta, and Pt were subjected to thermogravimetric analysis to experimentally determine their vapor pressure curves and to gain insight into their temperature-dependent decomposition kinetics. Benzoic acid was used as a calibration standard and vapor pressure curves were extracted from thermogravimetric measurements using the Langmuir equation. The obtained data is used to discuss the suitability of these MO precursors in chemical vapor deposition-based thin film growth approaches in general, and hybrid molecular beam epitaxy in particular. All MOs, except for Ta- and one Ti-based MOs, were deemed suitable for gas inlet systems. The Ta-based MO demonstrated suitability for an effusion cell, while all MOs showed compatibility with cracker usage. Graphical Abstract

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Thermal probe of vapor–liquid thermodynamic equilibrium

Cited by 3 publications

References 141 publications

MicroSweat: A Wearable Microfluidic Patch for Noninvasive and Reliable Sweat Collection Enables Human Stress Monitoring

MicroSweat: A Wearable Microfluidic Patch for Noninvasive and Reliable Sweat Collection Enables Human Stress Monitoring

Vaporization thermodynamics of normal alkyl phenones

Thermogravimetric study of metal–organic precursors and their suitability for hybrid molecular beam epitaxy

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