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Thread-based multiplexed sensor patch for real-time sweat monitoring

npj Flexible Electronics 2020年第1期4卷 159-168页

作者： Trupti Terse-Thakoor Meera Punjiya Zimple Matharu Boyang Lyu Meraj Ahmad Grace E.Giles rachel owyeung Francesco Alaimo Maryam Shojaei Baghini Tad TBrunyé Sameer Sonkusale Department of Electrical and Computer Engineering Tufts UniversityMedfordMA02155USA Department of Electrical Engineering Indian Institute of Technology(IIT)BombayMumbai400076India Center for Applied Brain and Cognitive Sciences MedfordMA02155USA U.S.Army Combat Capabilities Development Command Soldier CenterNatickMA01760USA Department of Chemical and Biological Engineering Tufts UniversityMedfordMA02155USA Tufts University Department of PsychologyMedfordMA02155USA

Sensor platforms that exploit the fibrous textile threads as substrates offer great promise since they can be directly sewn,woven or stitched on to any *** can also be placed directly in intimate contact with the *** this work,we present a thread-based sensing platform in the form of a multiplexed sensing patch for continuous simultaneous on-skin monitoring of *** patch performs real-time,on-body measurements of important biomarkers present in sweat such as electrolytes(sodium and ammonium ions),metabolites(lactate)and acidity(pH).Flexible threads coated with conductive inks were used as sensing *** potentiometric detection of electrolytes and pH was made possible through ion-selective membrane deposition and pH-sensitive polyaniline coating on threads,*** amperometric enzymatic sensing scheme with lactate oxidase was used for the detection of *** array of the thread sensors is integrated onto a patch with connectivity to a miniaturized circuit module containing a potentiostat,microprocessor and wireless circuitry for wireless smartphone *** in vitro validation and an in vivo human pilot study involving a maximal exertion test show the promise of this platform for real-time physiological monitoring of human performance/fitness under stress,as well as diagnostic monitoring through sweat analysis.

关键词： patch Sensor monitoring

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Three dimensional printing of metamaterial embedded geometrical optics(MEGO)

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Microsystems & Nanoengineering 2019年第1期5卷 542-551页

作者： Aydin Sadeqi Hojatollah Rezaei Nejad rachel E.owyeung Sameer Sonkusale Nano Lab Department of Electrical and Computer EngineeringTufts UniversityMedfordMA 02155USA Department of Chemical and Biological Engineering Tufts UniversityMedfordMA 02155USA

Three-dimensional printers have revolutionized many scientific fields with its low-cost,accessibility and ease of *** this paper,we show how stereolithography(SLA)based 3D printers can enable realization of innovative 3D optical devices formed through the fusion of metamaterials with geometrical optics or *** utilizes a combination of desktop SLA 3D printer and metal deposition/coating *** this approach,we present innovative metamaterial embedded optical components such as mushroom-type metamaterials,curved wide-angle metamaterial absorbers/reflectors and a frequency selective moth eye hemispherical *** a unique MEGO device formed through the fusion of a frequency selective metamaterial with an optical parabolic reflector has been demonstrated that combines their individual properties in a single *** fabricated MEGO devices operate in the millimeter wave frequency *** and measurement results using terahertz continuous-wave spectrometer validate their functionality and *** improving resolution in 3D printing,MEGO devices will be able to reach Terahertz and optical frequencies in the near future.

关键词： millimeter printing optics

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