A fast method to design and characterize the performance of UHF RFID tags

Houeix, Yann; Rivadeneyra, Almudena; Moraila, Carmen L.; Rodríguez, Noel; Morales, Diego P.; Salmeron, Jose Fernandez

doi:10.1109/rfid-ta54958.2022.9923963

Cited by 3 publications

(3 citation statements)

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“…This laser fluence allows for the lowest sheet resistance without damaging neither the polyimide film substrate nor the paper below. [54] A fume extractor was located nearby to absorb the smoke generated during the laser photothermal process. After the laser-scribing of the LIG electrode, it was equipped with a standard snap male connector.…”

Section: Methodsmentioning

confidence: 99%

Dry Laser‐Induced Graphene Fractal‐like ECG Electrodes

Houeix,

Gerardo,

Romero

et al. 2024

Adv Elect Materials

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Fractal‐like geometries applied to biosignal‐electrodes design show great potential for enhancing the signal acquisition of sensing systems. This study reports a novel approach for flexible, silver‐free, and dry fractal‐like electrodes based on Laser‐Induced Graphene (LIG) obtained through laser photothermal processing of a commercial polyimide film. This one‐step mask‐less manufacturing process enables the simple fabrication of natural and optimized fractal‐like shapes inspired by actual snowflake patterns. To ensure a reliable and standardized connection to the measurement unit, the electrodes are equipped with a snap terminal. The electrodes are structurally characterized using various techniques including Scanning Electron Microscopy (SEM), Raman spectroscopy, and X‐ray Photoelectron Spectroscopy (XPS). By benchmarking the performance of these electrodes against Ag/AgCl wet commercial electrodes and LIG electrodes shaped as commercial ones, a heart rate‐monitoring accuracy of over 96.8% is achieved, with high specificity, positive prediction, and sensitivity, surpassing the 95.8% achieved by conventional commercial electrodes. These results demonstrate the efficacy of fractal‐based designs in combination with LIG‐based transduction, offering flexible and cost‐effective electrocardiogram (ECG) electrodes with improved performance compared to traditional wet electrodes.

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Section: Methodsmentioning

confidence: 99%

Dry Laser‐Induced Graphene Fractal‐like ECG Electrodes

Houeix,

Gerardo,

Romero

et al. 2024

Adv Elect Materials

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“…Fourier transform infrared (FTIR) spectrums were employed to check the functional groups of these LIG-based electrode materials (Figure 2F), indicating that the absorption peaks at 1390, 1637, and 2916 cm −1 correspond to the C─N stretching vibration, C=C aromatic skeleton, and C─H bending vibration of LIG, [49,50] respectively. As for LIG-Bi 2 S 3 , LIG-Yb-Bi 2 S 3 , and LIG-Yb-Bi 2 S 3 /PMA composites, some characteristic peaks including Bi─S, S─H, and P─O bonding links of Bi 2 S 3 or PMA are observed at 619, 896, 1062, and 1118 cm −1 , [51,52] reconfirming the successful establishing of these heterogeneous sensing interfaces.…”

Section: Characterization Of Lig-based Photoelectrode Materialsmentioning

confidence: 99%

NIR‐Excitable POM‐Encapsulated Yb‐Bi₂S₃ Decorated Graphene for Wearable Photoelectrochemical Sensing

Wang,

Li,

Zhang

et al. 2024

Adv Funct Materials

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Transition metal sulfides have garnered significant interest in the realm of photoelectrochemical (PEC) sensors due to their remarkable optical and electrical properties. However, their intrinsic UV–vis adsorption and electron‐donor consumption severely hinder their nonirritating and in situ epidermal PEC applications. Herein, a NIR‐808 nm light‐excited heterojunction, phosphomolybdic acid‐encapsulated ytterbium‐doped bismuth sulfide (Yb‐Bi2S3/PMA), is synthesized by hydrothermal method for self‐sufficient electron donor‐based PEC sensing. Further, the Yb‐Bi2S3/PMA heterojunction is decorated on flexible and integrated laser‐induced graphene electrode arrays, providing ultrafast charge carrier transfer capacity and robust mechanical durability (300 bending cycles) for subsequent wearable PEC sensing. As a showcase, the aptamer molecular recognition‐based wearable PEC sensor for sweat trace Neuropeptide Y (NPY, a stress or depression biomarker) presents an ultra‐low detection limit (0.39 fM) and good anti‐interference ability. Moreover, the integration of wearable PEC aptasensor with signal processing and wireless communication facilitates nonirritating and in situ analysis of sweat trace NPY dynamics in various real scenarios (feeding behaviors, physiological stress, and circadian rhythm). More broadly, this research establishes the foundation for NIR‐excitable semiconductors equipped with self‐sufficient electron donor capabilities, unlocking the potential for ultrasensitive wearable PEC sensing applications.

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“…Once the PVA was completely dissolved, 1.5 mL of phosphoric acid, H 3 PO 4 , was added to the solution and it was stirred for another hour. 12,52,53 Finally, 0.5 mL of the resulting PVA/H 3 PO 4 gel electrolyte were drop-cast on top of the IDE structure covering all the effective area, as shown in Fig. 2.4.…”

Section: Supercapacitor Fabricationmentioning

confidence: 99%

Simple fabrication of laser-induced graphene functionalized with a copper-based metal–organic framework and its application in solid-state supercapacitors

Morales-Cámara,

Toral,

Vitorica-Yrezabal

et al. 2024

J. Mater. Chem. C

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A fast method to design and characterize the performance of UHF RFID tags

Cited by 3 publications

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Dry Laser‐Induced Graphene Fractal‐like ECG Electrodes

Dry Laser‐Induced Graphene Fractal‐like ECG Electrodes

NIR‐Excitable POM‐Encapsulated Yb‐Bi₂S₃ Decorated Graphene for Wearable Photoelectrochemical Sensing

Simple fabrication of laser-induced graphene functionalized with a copper-based metal–organic framework and its application in solid-state supercapacitors

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A fast method to design and characterize the performance of UHF RFID tags

Cited by 3 publications

References 0 publications

Dry Laser‐Induced Graphene Fractal‐like ECG Electrodes

Dry Laser‐Induced Graphene Fractal‐like ECG Electrodes

NIR‐Excitable POM‐Encapsulated Yb‐Bi2S3 Decorated Graphene for Wearable Photoelectrochemical Sensing

Simple fabrication of laser-induced graphene functionalized with a copper-based metal–organic framework and its application in solid-state supercapacitors

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NIR‐Excitable POM‐Encapsulated Yb‐Bi₂S₃ Decorated Graphene for Wearable Photoelectrochemical Sensing