紫外線從來都是可免則免,而購買薯仔則是多多益善。690Please respect copyright.PENANA2pfg7H9fX4
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在大多數的情況下,陽光是我們接觸紫外線的最主要源頭。690Please respect copyright.PENANAECqdKevwM5
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太陽放出的紫外線根據波段可分為兩種,UVA和UVB。690Please respect copyright.PENANAQgtgHrBhHO
概要來說,UVA(320–400nm)會曬黑皮膚及引起皺紋,而UVB(280–320 nm)則會曬傷及曬紅皮膚。690Please respect copyright.PENANALig67p8HsP
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根據世衛所訂下的方式,UV指數的計法是將總紫外線的能量除以25。690Please respect copyright.PENANAtloEKePeru
指數高於6表示有高度曬傷風險,而高於11更會對人體構成危險。690Please respect copyright.PENANAZ9NrMuvnUe
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(圖2)現今智能手錶、智能眼鏡等設備已逐漸普遍,有不少更設有光觸媒二氧化鈦(TiO2)等物料可以將紫外光量化成電流,然後再根據的電流強弱判斷出紫外線指數。690Please respect copyright.PENANAuDIpuBWwOu
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(圖3)近日,有科學家研發出隨著紫外光強弱而變色的麻料(Ref1),基於毛線表面凹凸不平,因而增加紫外光在裡頭多重折射的機會,變相使在感測方面比普遍的平面光觸媒更為靈敏。690Please respect copyright.PENANATuQMg73RO8
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他們在文中展示出,改變原材料的做法,可達至不同效果,例如WIFI圖案展示出紫外線的強弱。690Please respect copyright.PENANA0JrnR3ZfI0
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(圖4)他們更成功製作出隨紫外光強弱而變色的麻繩,據稱布料彈性十足穿著上非常舒適,而且製作方法可套用在任何製衣物料上。690Please respect copyright.PENANAi8WAWOCWmZ
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在文中,他們發揮了自己的小宇宙,縫出提子圖案,提子葉加上孔雀石綠感測pH,而提子則由紫外光織成麻繩用作感測UV之用。690Please respect copyright.PENANAHnwgRzvr6f
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無疑,一場時裝界的科學大戰號角已徐徐奏起。690Please respect copyright.PENANA3e9LNOz06G
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如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。690Please respect copyright.PENANADTDMrKuO6R
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Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc690Please respect copyright.PENANA1sCINZcDSN
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同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。690Please respect copyright.PENANA8XSxhPXPfz
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Link:690Please respect copyright.PENANAu7vcApCHDX
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio690Please respect copyright.PENANAGi14FTdZDM
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有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。690Please respect copyright.PENANAfE4KB1NJvQ
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Ref1:https://onlinelibrary.wiley.com/doi/full/10.1002/admt.202000564690Please respect copyright.PENANApW5TDsviWG
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明日會停一日更,想花時間在講故台寫文。690Please respect copyright.PENANADRNwQf2Zht