ultramicrotome

简明释义

英[ˌʌltrəˈmaɪkrətəʊm]美[ˌʌltrəˈmaɪkrəˌtom]

n. [医][生物] 超微切片机

英英释义

单词用法

同义词

反义词

例句

1.Ultramicrotome makes nanoslices of a sample and a freshly cut surface is then measured by AFM.

超薄切片机可以制备用于原子力显微镜研究的纳米片层和新鲜表面。

2.Glass knives for ultramicrotome were improved by sputter and evaporating coating cut-ting dege with a film of tungsten.

通过溅射的真空蒸发镀膜使超薄切片机上使用的玻璃刀口上带有一层钨膜。

3.Glass knives for ultramicrotome were improved by sputter and evaporating coating cut-ting dege with a film of tungsten.

通过溅射的真空蒸发镀膜使超薄切片机上使用的玻璃刀口上带有一层钨膜。

4.With the help of an ultramicrotome, we can obtain ultra-thin sections of biological tissues.

借助超微切片机，我们可以获得生物组织的超薄切片。

5.An ultramicrotome is essential for studying cellular structures at a molecular level.

在分子水平上研究细胞结构时，超微切片机是必不可少的。

6.The researcher used an ultramicrotome to prepare the samples for electron microscopy.

研究人员使用超微切片机为电子显微镜准备样本。

7.Before using the ultramicrotome, make sure the blade is sharp and properly aligned.

在使用超微切片机之前，请确保刀片锋利且正确对齐。

8.The precision of an ultramicrotome allows for detailed analysis of tissue morphology.

超微切片机的精确性允许对组织形态进行详细分析。

作文

The field of microscopy has undergone tremendous advancements over the years, allowing scientists to explore the intricate details of cellular structures. One of the most significant tools in this domain is the ultramicrotome, a specialized instrument used for cutting extremely thin sections of specimens for electron microscopy. The ultramicrotome is essential for preparing samples that are often only a few nanometers thick, which is crucial for obtaining high-resolution images of biological tissues and materials.Understanding the functionality of the ultramicrotome is important for anyone involved in research that requires detailed cellular analysis. The device operates by using a diamond or glass knife to slice through the specimen with precision. This process is vital because thicker sections would scatter electrons and result in blurry images when viewed under an electron microscope. The ability to produce such thin slices allows researchers to observe cellular components, organelles, and even viruses at an unprecedented level of detail.In practice, the use of the ultramicrotome involves several steps. First, the specimen must be properly fixed and embedded in a resin to provide support during the cutting process. After polymerization of the resin, the sample is mounted onto the ultramicrotome for sectioning. The operator must carefully adjust the thickness settings, typically ranging from 50 to 100 nanometers, to achieve the desired results. Each slice is then collected on a grid for examination under an electron microscope.The significance of the ultramicrotome extends beyond simple specimen preparation; it plays a critical role in various fields such as histology, pathology, and materials science. For instance, in medical research, pathologists rely on the ultramicrotome to prepare tissue samples for diagnosis. The detailed images obtained can reveal abnormalities in cells that may indicate diseases like cancer, enabling timely and accurate diagnoses.Moreover, in materials science, the ultramicrotome is used to analyze the microstructure of materials, which is essential for understanding their properties and behaviors. By examining these thin sections, scientists can gain insights into the arrangement of atoms and molecules within a material, leading to innovations in engineering and technology.Despite its importance, working with the ultramicrotome requires a high level of skill and precision. Operators must be trained to handle the equipment safely and effectively, as the knives used are extremely sharp and can pose risks if not managed correctly. Additionally, maintaining the ultramicrotome and ensuring it is calibrated accurately is crucial for producing consistent and reliable results.In conclusion, the ultramicrotome is a vital tool in the world of microscopy, enabling researchers to delve into the microscopic world with clarity and precision. Its ability to produce ultra-thin sections makes it indispensable for various scientific disciplines, from biology to materials science. As technology continues to advance, the ultramicrotome will undoubtedly play an even more significant role in uncovering the mysteries of the microscopic universe, facilitating breakthroughs that can lead to improved health outcomes and technological innovations.

显微镜学领域近年来经历了巨大的进步，使科学家能够探索细胞结构的复杂细节。在这个领域中，最重要的工具之一是超薄切片机，这是一种用于切割极薄标本以进行电子显微镜观察的专业仪器。超薄切片机对于准备厚度仅为几纳米的样本至关重要，这对于获得生物组织和材料的高分辨率图像至关重要。理解超薄切片机的功能对于任何涉及需要详细细胞分析的研究人员来说都很重要。该设备通过使用钻石或玻璃刀以精确的方式切割标本。这一过程至关重要，因为较厚的切片会散射电子，并在电子显微镜下观察时导致模糊的图像。生产如此薄的切片的能力使研究人员能够以前所未有的细节观察细胞组件、细胞器甚至病毒。在实践中，使用超薄切片机涉及几个步骤。首先，必须适当地固定和嵌入样本，以在切割过程中提供支持。树脂聚合后，样本被安装到超薄切片机上进行切片。操作员必须小心调整厚度设置，通常范围在50到100纳米之间，以实现所需的结果。然后，每个切片被收集在网格上，以便在电子显微镜下检查。超薄切片机的重要性不仅限于简单的样本准备；它在组织学、病理学和材料科学等多个领域发挥着关键作用。例如，在医学研究中，病理学家依赖超薄切片机准备组织样本以进行诊断。获得的详细图像可以揭示细胞中的异常情况，这可能表明癌症等疾病，从而实现及时和准确的诊断。此外，在材料科学中，超薄切片机用于分析材料的微观结构，这对于理解其特性和行为至关重要。通过检查这些薄切片，科学家可以深入了解材料内部原子和分子的排列，从而推动工程和技术的创新。尽管超薄切片机的重要性，使用它需要高度的技能和精确度。操作员必须经过培训，以安全有效地操作设备，因为使用的刀具非常锋利，如果处理不当可能会带来风险。此外，维护超薄切片机并确保其准确校准对于产生一致和可靠的结果至关重要。总之，超薄切片机是显微镜学世界中的重要工具，使研究人员能够清晰而精确地深入微观世界。其生产超薄切片的能力使其在生物学到材料科学等各种科学学科中不可或缺。随着技术的不断进步，超薄切片机无疑将在揭示微观宇宙的奥秘方面发挥更重要的作用，促进改善健康结果和技术创新的突破。