Ultrafine-fiber thermistors for microscale biomonitoring

Nakajima, Tomohiko; Tsuchiya, Toshio

doi:10.1039/d2tc04548f

Cited by 2 publications

(1 citation statement)

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“…Using a low temperature and atmospheric process, the film formation of flexible microsensors has been demonstrated by irradiating the precursor film formed by micropatterning the coating on a flexible plastic substrate using an excimer laser. [29][30][31] In PCSD, thin oxide films are formed through solution coating, drying, densification associated with the decomposition of metal-organic (MO) compounds, and photocrystallization. When using industrial lasers, the coating and pulsed laser irradiation processes are very fast, on the order of a few seconds.…”

Section: Introductionmentioning

confidence: 99%

Remanufacturing transparent conductive oxide electrodes using ultrafast on-demand laser fabrication

Nakajima,

Nomoto,

Kitanaka

et al. 2024

J. Mater. Chem. C

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Section: Introductionmentioning

confidence: 99%

Remanufacturing transparent conductive oxide electrodes using ultrafast on-demand laser fabrication

Nakajima,

Nomoto,

Kitanaka

et al. 2024

J. Mater. Chem. C

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Printing Formation of Flexible (001)-Oriented PZT Films on Plastic Substrates

Nakajima

Kitanaka

2023

Materials

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High-quality, uniaxially oriented, and flexible PbZr0.52Ti0.48O3 (PZT) films were fabricated on flexible RbLaNb2O7/BaTiO3 (RLNO/BTO)-coated polyimide (PI) substrates. All layers were fabricated by a photo-assisted chemical solution deposition (PCSD) process using KrF laser irradiation for photocrystallization of the printed precursors. The Dion–Jacobson perovskite RLNO thin films on flexible PI sheets were employed as seed layers for the uniaxially oriented growth of PZT films. To obtain the uniaxially oriented RLNO seed layer, a BTO nanoparticle-dispersion interlayer was fabricated to avoid PI substrate surface damage under excess photothermal heating, and the RLNO has been orientedly grown only at around 40 mJ·cm−2 at 300 °C. The prepared RLNO seed layer on the BTO/PI substrate showed very high (010)-oriented growth with a very high Lotgering factor (F(010) = 1.0). By using the flexible (010)-oriented RLNO film on BTO/PI, PZT film crystal growth was possible via KrF laser irradiation of a sol–gel-derived precursor film at 50 mJ·cm−2 at 300 °C. The obtained PZT film showed highly (001)-oriented growth on the flexible plastic substrates with F(001) = 0.92 without any micro-cracks. The RLNO was only uniaxial-oriented grown at the top part of the RLNO amorphous precursor layer. The oriented grown and amorphous phases of RLNO would have two important roles for this multilayered film formation: (1) triggering orientation growth of the PZT film at the top and (2) the stress relaxation of the underneath BTO layer to suppress the micro-crack formation. This is the first time that PZT films have been crystallized directly on flexible substrates. The combined processes of photocrystallization and chemical solution deposition are a cost-effective and highly on-demand process for the fabrication of flexible devices.

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Ultrafine-fiber thermistors for microscale biomonitoring

Abstract: We have prepared spinel Mn1.4Co0.9Ni0.5Cu0.2O4 (MCNC) film thermistors on ultrafine aramid (poly-p-phenylene-terephthalamide) fibers using a photocrystallization technique with KrF laser irradiation at room temperature. We coated a Φ15-μm diameter aramid...

Cited by 2 publications

References 38 publications

Remanufacturing transparent conductive oxide electrodes using ultrafast on-demand laser fabrication

Remanufacturing transparent conductive oxide electrodes using ultrafast on-demand laser fabrication

Printing Formation of Flexible (001)-Oriented PZT Films on Plastic Substrates

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