全國中小學科展

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2025年

Application of Carbon Aerogels in Lithium-Air Batteries

One of the main challenges with today’s batteries is their relatively low volumetric and specific capacities. The highest specific capacity can be achieved with lithium-air batteries, which use metallic lithium as the anode and typically some form of porous carbon as the cathode. To enhance performance, aerogels—among the world’s lightest solid materials—are ideal candidates for cathodes. Resorcinol-formaldehyde (RF)-based carbon aerogels, for example, serve this purpose well. In my work, I utilized two types of carbon aerogels as cathode materials: one derived from pyrolyzed resorcinol-formaldehyde polymer and the other a graphene-oxide-modified version of this carbon gel. I integrated the carbon aerogels I had pyrolyzed into lithium-air batteries to improve the cell’s performance, energy density, and capacity compared to cells using activated carbon. In my research, I examined the pore structure and surface properties of these materials in aqueous media using NMR (nuclear magnetic resonance) relaxometry and cryoporometry, exploring their impact on battery efficiency. I found that the graphene-oxide-containing sample's pores filled with water in a layered manner, indicating a more hydrophilic surface, which suggests a denser arrangement of oxygen-containing functional groups compared to the unmodified carbon aerogel. The pore sizes were reduced after adding graphene oxide, resulting in an increased specific surface area for the sample. Incorporating the reduced graphene-oxide-containing carbon aerogel enabled the creation of a more efficient, higher-capacity battery than with the RF carbon aerogel. This improved performance is likely due to the aerogel’s higher oxygen content and altered morphology. The increased oxygen content provides more active sites for oxygen reduction, meaning that a greater specific power output can be obtained from the battery.

A Study on Hybrid Electromechanical Actuators

An actuator [7,22,28,29] is a motion control mechanism. Depending on the type of actuator, it can convert one type of energy (e.g. chemical, electromagnetic, thermal) into mechanical energy. The field that laid the foundations for the realization of actuators is the field of electromechanics, whose evolution was common with that of actuators. Thus, a periodization of the electromechanics paradigm includes 3 major stages [7,6,25,28,29]: I.1830-1950 Old electromechanics. It is the period when the development of electric cars is significant, which imposed the appearance of classical or primary electromechanical drives. It was a generous nineteenth century, dominated by the scientific results of the triumvirate: Michel Faraday (initiator of fundamental empirical experiments in the history of electricity; the law of induction, of the principle of electric motor, of the magnetic circuit, initiator of electro-chemistry), James Clerk Maxwell, (the genius theorist who put into mathematical form the equations of electric and magnetic fields, as well as the connection between them), and Werner Siemens (engineer and capitalist genius manager who managed to exploit and validate the relationship research-technology-economic development), triumvirate that can be disputed in the sense that other scientists also made outstanding contributions to the history of electricity: Edison, Ampere, Ohm (to name but a few who do not exhaust a significant list). Industrial production of electric machines also appeared and the first signs that will announce the emergence of electromechanical actuators as a basis for military applications. II.1950-1970, Traditional electromechanics, in which electrical power drives appear, a theoretical and experimental development on the emergence of new material and electromechanical principles. Much military research (such as missile control or ship and torpedo control) influences and produces the transfer of applications in ordinary life, including the actuator subfield. III. 1970-2020, Avant-garde electromechanics, representing according to Thomas Kuhn's theory, a paradigm forcing [30]. It is worth noting the contributions of the new scientific revolution. - Specific technologies of miniaturization, by material deposition. - Elastomeric polymeric materials with the help of which it was possible to make electrostrictive actuators, - Very special means of investigation, mainly the development of microscopy, - Gradient of applications in the field of medical engineering, with outstanding contributions both in investigation and microsurgery, applications of actuators in biological micropumps, etc. [25,27,28,29].

運用深度學習色彩校正模型之黃疸偵測 Jaundice Detection Using Deep Learning-Based Color Correction Models

現今醫療中,黃疸的早期偵測對肝臟疾病的預防與治療至關重要,但多數人難以在症狀輕微時察覺。我們希望藉由智慧手機影像結合機器學習進行黃疸檢測,提升民眾自我監測的能力。Su 等人(2021)曾使用深度學習和機器學習進行黃疸預測,但其方法依賴專業色卡進行色彩校正,成本高且限制應用範圍。本研究提出以白平衡演算法中的白色補丁法與灰界演算法,搭配深度學習模型 DCCNM1和2 取代色卡,提升黃疸檢測的普及性與便利性。經黃疸偵測效果評估顯示,DCCNM2 在無色卡模型中表現最佳,雖然各指標略低於色卡校正,但其展現出優異的穩定性和準確性,證明其作為無色卡黃疸篩檢方案的可行性。本方法將能提供便捷的居家黃疸檢測途徑,尤其對偏鄉地區居民而言,不僅提升早期發現的機會,還能有效減輕醫護人員的負擔,推動大眾健康管理。

Non-Invasive Vagus Nerve Stimulation as a Novel Therapy for Alzheimer’s Disease by Enhancing the Brain Clearance System(非侵入性迷走神經刺激術作為阿茲海默症的新療法—透過增強大腦清除系統)

阿茲海默症(AD)是導致失智症的主因,影響全球數千萬人。然而,AD目前的藥物大多昂貴且療效有限。目前已知腦內β類澱粉蛋白(Aβ)斑塊為AD的病理特徵,且大腦清除系統被認為對AD的治療具有重要性。先前研究發現非侵入性迷走神經刺激術(nVNS)增加腦脊髓液循環,但在神經退化疾病中的機制和應用尚不明確。本研究旨在探討nVNS增強大腦清除系統來作為AD新療法之成效,使用Aβ誘導之AD小鼠模型,利用巨視顯微鏡和免疫組織化學染色評估其膠淋巴系統功能,並以新奇事物測試評估認知功能。本研究發現於AD小鼠中,給予nVNS使大腦清除系統之水通道蛋白-4顯著增加、促進膠淋巴系統,進而改善認知功能。本研究首次發現nVNS可通過增強大腦清除系統功能,進而改善AD病理引起的失智症狀,支持nVNS作為AD新療法的可行性。

點亮絲路:碳量子點螢光蠶絲的製備與光降解環境污染物之應用

本研究以電紡絲法製作光動力活性的碳量子點(carbon quantum dots, CQDs)螢光蠶絲,用於光降解環境染劑汙染物與抗菌的應用探討。不同顏色螢光的碳量子點 紅、綠、藍色)的合成是以檸檬酸作為主要碳源,分別參雜尿素與葉綠素用以合成三種螢光的碳量子點。接著將絲素蛋白、聚乙二醇與量子點溶液為原料,以電紡絲法分別製作成藍色、綠色與紅色的螢光蠶絲。螢光光譜儀 PL)與穿透式電子顯微鏡 TEM)結果呈現量子點的光學特性與尺寸呈現預期的量子效應。拉曼光譜則證實電紡絲法之螢光蠶絲具有絲素蛋白、聚乙二醇與量子點的特徵訊號。本研究使用之電紡絲法製備之螢光蠶絲,與我們之前使用蠶寶寶桑葉餵食法生產之螢光蠶絲來比較,電紡絲螢光蠶絲具有更加優異及穩定的光降解環境汙染物效率,未來可用於自清潔、抗菌織物與醫療敷料之應用。

腔體共振與開孔氣流的探討

本研究探討聲音共振引起腔體開口處氣流噴出的現象。實驗通過揚聲器播放聲音,使固定的錐形瓶產生共振,並改變聲音頻率、聲音強度及腔體參數(體積、瓶口截面積、瓶頸長度)分析氣流的形成原理與機制。腔體非共振情況下,腔體內外氣壓的振幅差較小,且存在相位差,此時開口處並未測得氣流;而在共振時,腔體內氣壓振幅顯著增加,導致開口處出現氣流且流速達到峰值。而流速峰值頻率與腔體幾何參數的關係符合修正後的亥姆霍茲共振公式,其中瓶頸有效長度應為L+1.45D。此外,氣流形態受衝程比L/D影響,當衝程比小於0.1時,氣體噴出後容易被重新吸回腔體,無法形成噴流;而衝程比大於0.4時,噴出氣流形成穩定的不連續渦流環,即合成噴流;在0.1至0.4之間時,氣流形態處於過渡狀態。本研究為聲能轉動能方面提供新的研究途徑,並有進階研究的可能性。

Exploring the Potential of Pachyrizus Erosus-Derived Calcium as an Affordable Nutritional Solution for Lactose Intolerance

An exploration of Pachyrhizus erosus as an option for plant-based milk in the 印尼n market for people with lactose intolerance. With its prevalence in tropical climates, Pachyrhizus erosus is an affordable crop in 印尼. Pachyrhizus erosus is a root vegetable containing a calcium content of 15.6 mg per cup (130g) in its unprocessed form, concentrated in its white flesh. Based on its affordability and calcium content, Pachyrhizus erosus can be transformed into a beverage product with nutritional qualities on par with existing plant-based milk, therefore being a solution for calcium sustenance that is more accessible due to its high capability to be locally grown in 印尼. However, this may be a partial case as Pachyrhizus erosus only thrives in regions with long warm seasons. In this research, three trials of Pachyrhizus erosus-based milk recipe have been conducted Trial 1 consists of a 1:1 ratio of Pachyrhizus erosus to water, Trial 2 consists of a 2:1 ratio of Pachyrhizus erosus to water, and Trial 3 consisting of a 10:10:1 ratio of Pachyrhizus erosus to water, and to a small amount of soybean. Based on the results of 14 organoleptic test respondents, it is concluded that the best ratio of ingredients is 10:10:1 (water: Pachyrhizus erosus: soybean) due to an overall preference of the third trial with this ratio, in terms of taste, aroma, color, and consistency. Pachyrhizus erosus is the dominant ingredient in developing alternate plant-based milk. However, findings from the most preferred trial in the organoleptic test suggest that implementing a minor amount of soybean would stabilize the milk-like consistency and flavor. Pachyrhizus erosus’ ability to retain calcium in its water content has been additionally proven in a calcium test using a reagent solution of ammonium oxalate, as even with the trials’ step of straining the liquid content of Pachyrhizus erosus that had been blended with added water, all three trials tested positive based on the high level of the precipitate. Other tests that tackle the quality of each trial include In Silico Testing, biuret protein test, alcohol test, COB test, and pH level testing.

探討CTEN影響NF-кB路徑與細胞遷移之關聯性

C-terminal tensin-like(CTEN)是種可調控細胞遷移的蛋白質。在正常細胞中, CTEN 表現量低且多位於細胞質;然而癌細胞的 CTEN 則是過量表現於細胞核中,且目前研究指明 CTEN可能影響NF-κB路徑的活化,因此本研究探討癌細胞核中 CTEN 對 NF-κB 訊息傳導路徑,以及細胞遷移癌化的機制。目前研究結果證實:表現量位於癌細胞核的實驗組對於NF-κB轉錄活性有顯著的提升(其p-value < 0.05),且與空白對照組比較,其提升細胞遷移的能力約增加11倍。實驗挑選六種與細胞發炎、癌化相關的基因 ,以qPCR 測定CTEN與其表現量的關係,歸納結果得知癌細胞核中 CTEN 與這些基因沒有明顯的正相關。本研究接續研究CTEN影響NF-κB路徑及其與EMT的關係,瞭解CTEN、基因在這些路徑的交叉作用,將可提供更為新穎的癌症治療干預靶點。

芋頭生物塑膠材質的熱水即溶包研製

2023年聯合國氣候變遷大會(COP28)決議 2050年淘汰化石燃料。2022年聯合國環境大會制定從源頭減少塑膠垃圾的公約。為了回應這些全球目標,本研究利用廢棄芋頭皮的黏性製作生物塑膠,用於泡麵內調味料的熱水即溶包。常溫下為調味料包裝袋,熱水沖泡後即可溶解,成為富含營養的食材。 我們發現有八種配方能夠成功使其成形。其中,成本最低的配方為芋頭:明膠:小燭樹蠟:甘油:水=20:15:9:9:70。該產品在76°C以上的熱水中能夠溶解,第一次裂解時間為8秒鐘以內,之後會完全溶解。該裂解時間y(s)與溫度x(°C)的關係為:y=9.53×10¹¹x⁻⁵.⁹⁸。這使其適合用於泡麵時的熱水溫度,約 80°C以上。 物理性質包括:拉伸強度為0.70kgf/15mm,伸長率為20.4%,密度為1.11 g/cm³,含水率為20.3%。所有配方成分皆可食用,並可溶解於熱水中,適合作為泡麵調味料塑膠包的替代品,有助於減少農產廢棄物的處理量。

低速狀態下磁性齒輪傳動特性的實驗與理論探討

本研究探討利用指尖陀螺作為磁性齒輪,觀察並分析其磁性齒輪效應。本研究測量了磁性齒輪間的轉動慣量、影響範圍及力矩,除此之外,本研究發現,自由運轉狀態下的齒輪,具有三個運動階段,高速狀態,介於高速至低速難以預測的階段,以及低速的穩定運動狀態。 此外,為提升磁場計算的精確度,我們發現磁偶極近似方法無法有效描述系統中的磁場分佈,因此使用積分計算來求得更精確的磁場數據,並與實驗數據進行比對,結果吻合良好。