Atomic diameter-scale measurements

  • #1
DyerMaker
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Can be a length as short as diameter of atom measured out with today's technology?
To be more precise: can we put two objects together so there will be a space with width of one (or some number below 10) atom's diameter(s) between them?
 
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  • #2
For the question to make sense, you would need the surface of each object to be perfect, following a flat crystal plane. Then, because of quantum mechanics, an atom doesn't have a defined size. By the time the two surfaces would at about the atom-atom distance in the crystal, they would already be consider to be touching each other.
 
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  • #3
Well, kind of yes.
1700051306692.gif

Images can be made so measurements can be taken, but with this size it's already no longer simple what will an image show or what will a measurement measure.
 
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What is meant by atomic diameter-scale measurements?

Atomic diameter-scale measurements refer to the process of measuring the size of an atom or the distance between atoms in a molecule or crystal structure. These measurements are typically on the scale of angstroms (Å), where one angstrom is equivalent to 10^-10 meters or 0.1 nanometers.

How are atomic diameter-scale measurements conducted?

Atomic diameter-scale measurements are typically conducted using techniques such as X-ray crystallography, atomic force microscopy (AFM), scanning tunneling microscopy (STM), and electron microscopy. These methods allow scientists to visualize the arrangement of atoms and measure distances with high precision.

What is the importance of measuring atomic diameters?

Measuring atomic diameters is crucial for understanding the physical and chemical properties of materials. It helps in determining the structural configuration of molecules, which is essential for fields like materials science, chemistry, and pharmaceuticals. These measurements are also vital for the development of nanotechnology and advanced materials.

What challenges are faced in atomic diameter-scale measurements?

One of the main challenges in atomic diameter-scale measurements is the influence of the measurement technique itself on the sample. Techniques like AFM or STM might interact with the sample, potentially altering its state or structure. Additionally, achieving high resolution and accuracy at such a small scale requires extremely stable and precise equipment.

How has technology improved atomic diameter-scale measurements?

Advancements in technology have significantly improved atomic diameter-scale measurements. Improved detector sensitivity, enhanced resolution in microscopes, and the development of computational methods for better data analysis have all contributed to more accurate and detailed atomic-scale imaging and measurements. These advancements allow scientists to observe and measure atomic structures in real-time and under various conditions, providing deeper insights into atomic behavior.

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