要準確地移動固體並不是難事,但要精準控制液體流動的話就絕對不簡單了。1308Please respect copyright.PENANAyJwqAotviO1308Please respect copyright.PENANA8fV1IoKy7o
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(圖2)近日香港大學的科學家們研發出一種三層物料(Ref1),展示出精準控制液體流動的手段。1308Please respect copyright.PENANA62nlHGi8Xw1308Please respect copyright.PENANAkg5LKLH0c9
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物料的外層為排斥液體層,只要液體的體積控制在一定的程度下,水、酒精及各式各樣的液體將會被鎖定為水珠狀,不會仙女散花灑在地上。1308Please respect copyright.PENANAUrQT7AiqXs
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而物料的中心層則有著把熱力轉化成為電力的特質,底層則有光線轉化成熱力的特性。1308Please respect copyright.PENANAiaIGEiCrAX
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當利用激光照射到物料後,底層的物料便會將光線轉化成為熱能,其熱力將會在中心層轉化為為電能,而中心層電能的電極則會吸引位於上層的液體水珠前來。1308Please respect copyright.PENANA9tTdakBgDH
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(圖3)利用這個機制,他們可以任意操控液體的移動方向,使水珠反地心吸力行走,甚至是把兩顆水珠混合在一起。1308Please respect copyright.PENANA3w0oBU70UM1308Please respect copyright.PENANATD7MhqDLBD
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(圖4)把水珠混合在一起後,他們亦有能力把水珠一分為二,甚至能精準切割水珠的大小。1308Please respect copyright.PENANAZAyBv01W1x1308Please respect copyright.PENANAw7xZbomUYb
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(圖5)如果利用水珠製成「汽車」輪胎的話,甚至可以利用激光引領「汽車」行走。1308Please respect copyright.PENANA1JDuCIHYuR1308Please respect copyright.PENANAt2YzyNC3Y5
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在越來講求精準的時代,這種控制液體的手法將會帶來無窮的可能性。舉例來說,科學家可以透過光線調控腐蝕性液體與物件接觸的時間、研究多種液體混合的化學作用等等。1308Please respect copyright.PENANAqtpncrRxCK
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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。1308Please respect copyright.PENANA4JVyRQNlb1
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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/toc1308Please respect copyright.PENANALM11AqXJ3z
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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。1308Please respect copyright.PENANAnkcgcqTELH
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Link:1308Please respect copyright.PENANAkqBLq6G51S
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1308Please respect copyright.PENANAnCab4YYWFX
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有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。1308Please respect copyright.PENANAf4Yrc3fF2h
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Ref1:https://advances.sciencemag.org/content/6/38/eabc1693
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