攜手共解圓-扭結理論之探討
此篇研究發現在任何一個結中,都可以利用「牽手順序」和「交錯點編碼」兩種結的資訊直接看出一結化簡後的圖形。利用從「Reidemeister moves」所衍伸出的四種化簡方法{α, β, γ, δ}能更有效率的簡化結,並證明只需{α, β, γ, δ}就可化簡任何結,也利用{α, β, γ, δ}來驗證HOMFLY多項式是結不變量。由圖形及結的資訊我們發現,可使用「牽手順序」和「交錯點編碼」,搭配所討論出{α, β, γ, δ}的通式,依照步驟及通式簡化任何結。 本篇最重要的成果為:只需利用{α, β, γ, δ}即可化簡所有的結,而且比Reidemeister moves更有效率,因此可用{α, β, γ, δ}取代Reidemeister moves。 不管是一個封閉曲線或是兩個以上封閉曲線,都會遵守前述的規則,可利用{α, β, γ, δ}簡化圖形。文中也討論了較特別並具有規律的結──「星星結」,發現星星結只需使用「牽手順序」即可簡化,最後利用星星結的結論,發展出牽手遊戲中特殊的牽手遊戲情形。
竹炭與銀的美麗邂逅
本研究將竹炭與銀兩種不同的材料結合,研發出金屬結合非金屬的複合導電材質;利用銀鏡反應,以竹炭當作載體,製作出竹炭-銀複合物,透過自製竹炭-銀電壓與電流的裝置,發現竹炭-銀錠最佳導電的質量比例為竹炭比銀1:9,利用掃描是電子顯微鏡,分析竹炭-銀複合物,發現銀會有效分布在竹炭表面形成包覆,竹炭銀定可導電,電阻介於純銀與炭之間,其電阻極低,將來可應用在代替石墨作為電池的電極,對提升導電度會有幫助;In this work, using the silver-mirror reaction, porous bamboo charcoal has been successfully adopted as novel supports for immobilization of silver nanoparticles by a chemical reduction method and the metal-nonmetallic composites with conductivity efficacy were investigated. Through the test of homemade voltage with the electric current instrument, we found out that the best ratio of conductivity in the bamboo charcoal-silver ingot is 1:9. Scanning electron microscopy (SEM) of the composites show uniform Ag particles distribution on the BC matrix. The bamboo charcoal-silver ingot has the conductivity. The resistance, between the pure silver and the coal (graphite), is extremely low. Thus, this composite will promote conductivity and apply in the battery of electrode for replacing the graphite in the near future.