gallium

简明释义

英[ˈɡæliəm]美[ˈɡæliəm]

n. [化学] 镓

英英释义

单词用法

同义词

反义词

例句

1.Each panel contains small lenses that concentrate sunlight by 400 times onto strips containing gallium arsenide photovoltaic cells.

每块板上包含的把可以太阳光浓缩400倍的小晶体，主要成分是砷化镓光电池。

2.Production of such nanoscale wires need to be a kind of organic molecules and gallium salt mixture placed in a super-clean silver foil.

制作这种纳米级的金属线需要将一种有机分子和镓盐的混合物置于一个超级干净的银薄片上。

3.Gallium nitride turned out to be difficult to grow without defects, and although n-type gallium nitride could be made easily, p-type could not.

氮化镓最终被发现很难做到没有瑕疵，即使n型氮化镓很容易被造出，p型却不然。

4.In the early 1970s RCA did succeed in coaxing some light from gallium nitride-based diodes, but its blue LEDs were inefficient and dim.

20世纪70年代早期RCA的确成功的从氮化镓二极管中析出些许光线，但是它的蓝色LED太暗并且功效低下。

5.Moreover, gallium arsenide is much more expensive than silicon in the first place.

另外，最重要的是，镓砷化物比硅贵得多。

6.The crystal layer on early LEDs was gallium arsenide or gallium phosphide, which lent that reddish color.

早期LED的液晶层是砷化镓或者磷化镓做的，所以发出红光。

7.The semiconductor industry uses gallium to create high-performance electronic devices.

半导体行业使用镓来制造高性能电子设备。

8.Researchers are studying gallium compounds for potential applications in cancer treatment.

研究人员正在研究镓化合物在癌症治疗中的潜在应用。

9.The melting point of gallium is so low that it can melt in your hand.

由于镓的熔点非常低，它可以在你的手中融化。

10.In electronics, gallium arsenide is often used in solar cells.

镓砷常用于太阳能电池中。

11.The unique properties of gallium make it valuable for research in materials science.

镓的独特性质使其在材料科学研究中具有重要价值。

作文

Gallium, represented by the symbol Ga, is a fascinating element that has captured the attention of scientists and engineers alike. Discovered in 1875 by the French chemist Paul Émile Lecoq de Boisbaudran, gallium is a soft, silvery metal that is notable for its unique properties. One of the most intriguing aspects of gallium is its ability to melt just above room temperature, at about 29.76 degrees Celsius (85.57 degrees Fahrenheit). This means that if you hold a piece of gallium in your hand, it can actually begin to melt, which is quite a remarkable characteristic for a metal. Gallium is not found in its elemental form in nature; instead, it is typically obtained from the ores of aluminum and zinc. The extraction of gallium is an interesting process, as it usually involves the refinement of these metals. Once extracted, gallium has a variety of applications in modern technology. For instance, it is widely used in the production of semiconductors, which are crucial components in electronic devices such as smartphones, computers, and solar panels. Moreover, gallium plays a significant role in the field of optoelectronics. Gallium arsenide (GaAs), a compound formed with arsenic, is a key material used in the manufacture of light-emitting diodes (LEDs) and laser diodes. These devices are integral to modern lighting solutions and communication technologies, highlighting the importance of gallium in our daily lives. In addition to its technological applications, gallium also has interesting chemical properties. It can readily alloy with other metals, and its compounds exhibit unique characteristics. For example, gallium trichloride (GaCl3) is a Lewis acid that has applications in organic synthesis and catalysis. This versatility makes gallium a subject of ongoing research in various fields of chemistry. Another notable feature of gallium is its non-toxicity, which contrasts with many other metals that pose health risks. This property allows for safer handling and use in various applications, including in medicine. In fact, radioactive isotopes of gallium are used in medical imaging techniques, such as positron emission tomography (PET) scans, to help diagnose and monitor diseases. Despite its many benefits, gallium is relatively rare in the Earth's crust, making it less abundant than other more commonly used metals. This rarity contributes to its cost, which can be a limiting factor in some applications. However, as technology advances and the demand for semiconductors and other electronic components grows, the importance of gallium is likely to increase. In conclusion, gallium is a remarkable element with unique properties and a wide range of applications in technology, chemistry, and medicine. Its discovery opened new avenues for research and innovation, and its continued study promises to yield even more exciting developments in the future. Understanding gallium and its uses not only enhances our knowledge of the periodic table but also highlights the interconnectedness of science and technology in shaping our modern world.

镓，用符号Ga表示，是一种引人入胜的元素，吸引了科学家和工程师的关注。它于1875年由法国化学家保尔·埃米尔·勒科克·德·博瓦巴朗发现，镓是一种柔软的银色金属，以其独特的性质而著称。镓最有趣的方面之一是它的熔点略高于室温，约为29.76摄氏度（85.57华氏度）。这意味着如果你把一块镓放在手中，它实际上会开始融化，这对于金属来说是相当显著的特性。 镓在自然界中并不存在于单质形式中；相反，它通常从铝和锌的矿石中获得。提取镓的过程很有趣，因为它通常涉及到这些金属的精炼。一旦提取出来，镓在现代技术中有多种应用。例如，它被广泛用于半导体的生产，而半导体是智能手机、计算机和太阳能电池板等电子设备的重要组成部分。 此外，镓在光电电子学领域也发挥着重要作用。镓砷化物（GaAs）是与砷形成的化合物，是制造发光二极管（LED）和激光二极管的关键材料。这些设备对现代照明解决方案和通信技术至关重要，突显了镓在我们日常生活中的重要性。 除了其技术应用外，镓还具有有趣的化学性质。它可以与其他金属轻易合金，并且其化合物表现出独特的特性。例如，镓三氯化物（GaCl3）是一种路易斯酸，在有机合成和催化中有应用。这种多功能性使得镓成为各个化学领域持续研究的对象。 镓的另一个显著特征是其无毒性，这与许多其他金属存在健康风险形成对比。这一特性允许在各种应用中更安全的处理和使用，甚至包括医学领域。事实上，放射性同位素的镓被用于医学成像技术，如正电子发射断层扫描（PET）扫描，以帮助诊断和监测疾病。 尽管有许多优点，镓在地壳中的含量相对较少，使其比其他更常用的金属稀有。这种稀缺性导致了其成本，这可能是某些应用的限制因素。然而，随着技术的进步和半导体及其他电子元件需求的增长，镓的重要性可能会增加。 总之，镓是一个具有独特属性和广泛应用的非凡元素，涉及技术、化学和医学。它的发现为研究和创新开辟了新的途径，持续的研究承诺将带来更多令人兴奋的发展。理解镓及其用途不仅增强了我们对元素周期表的知识，还突显了科学与技术在塑造现代世界中的相互联系。