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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/80527

    Title: 以雷射直寫於織物上製作可拉伸之銀導線;Stretchable Conductive Silver Wire Fabricated on Textile by Direct Laser Writing
    Authors: 林俊佑;Lin, Chun-Yu
    Contributors: 光電科學與工程學系
    Keywords: 雷射直寫;緯編針織織物;智慧織物;導電織物;銀導電油墨;應變感測;direct laser writing;weft-knitted textile;smart textile;conductive textile;silver conductive ink;strain sensing
    Date: 2019-07-04
    Issue Date: 2019-09-03 14:43:25 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本論文以雷射直寫技術結合有機銀導電油墨在緯編針織聚酯纖維織物上製作銀導線叢(以下稱為導線)。首先,在波長532 nm連續波雷射照射下我們觀察到銀奈米粒子在織物上還原以及沉積的過程。當雷射功率密度大於95.2 mW/mm2時,一個步驟便可在織物上製作出~3 Ω/cm的導線。
    接下來,我們根據ASTM D257-07標準並以最佳的雷射直寫參數製作1 cm × 1 cm方形導電織物量測電阻率,其面電阻率為69.6 Ω/□與81.2 Ω/□之間,是ITO玻璃面電阻率的3至4倍左右,顯示以雷射直寫於織物上製作電磁屏蔽的潛力。
    最後,我們量測導線在拉伸-回復循環過程中電阻變化對應變的關係。結果顯示,在100 %拉伸-回復應變量下沿著導線經向方向的電阻變化量為~1150 %大於緯向方向的電阻變化量~30 %,這表示織物上的導線可作為二維應變感測元件;此外,導線經過多次拉伸-回復應變循環後高的可重覆特性,應用在智慧織物領域上是極具有潛力的。
    ;In this study, the metallization of weft-knitted polyester textile exploiting direct laser writing (DLW) technique in combination of silver-based organometallic ink was reported. Under the irradiation of green laser light (λ = 532 nm), silver was reduced and deposited on polyester fabrics, forming silver wire bundles (hereinafter called silver wires). With the laser power density of 95.2 mW/mm2, lowest resistance R = ~3 Ω/cm was obtained without further sintering process.
    To demonstrate the capability of maskless patterning, a 1 cm  1 cm square of the textile was metallized. Following Standard ASTM D257-07, surface resistivity range from s = 69.6 Ω/□ to s = 81.2 Ω/□ were obtained. Compared with ITO, the surface resistivity is just 3-4 times higher showing the great potential for textile-based electromagnetic screening.
    The last demonstration is a strain sensor. It is found that the resistance variation of the wire under 100 % strain along the wale and course direction are ~1150 % and ~30 %, respectively. This anisotropic property can be very useful in 2D strain sensing and the highly repeatable stretching-releasing characteristic under high cycles promises many potential applications in the field of smart textile.
    Appears in Collections:[光電科學研究所] 博碩士論文

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