Can the crystal particle expand?

  • Thread starter Thread starter mazwan
  • Start date Start date
  • Tags Tags
    Crystal Particle
Click For Summary

Discussion Overview

The discussion revolves around the behavior of crystal particles in response to temperature changes, specifically whether they expand and what happens to their structure as temperature increases. Participants explore concepts related to atomic vibrations, perceived size changes, and crystal growth theories.

Discussion Character

  • Homework-related
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant questions the definition of "crystal particle" and its "actual size," seeking clarification on what is meant by size comparison.
  • Another participant suggests that crystals typically expand slightly with increased temperature, noting that the average distance between atoms increases due to higher energy levels.
  • A different viewpoint states that crystals do not actually expand; rather, the distance between atoms vibrates and increases, leading to a perception of larger size. This participant also mentions an experiment related to plasma sputtering, observing that grain size increases with temperature.
  • One participant expresses confusion about the theories of crystal growth and differentiates it from the discussion on thermal expansion.

Areas of Agreement / Disagreement

Participants exhibit disagreement regarding whether crystals expand or if the perceived increase in size is due to atomic vibrations. There is no consensus on the correct interpretation of crystal behavior under temperature changes.

Contextual Notes

Some assumptions about definitions and measurements are not fully clarified, and the discussion includes unresolved questions about the theories of crystal growth.

mazwan
Messages
2
Reaction score
0

Homework Statement



With increasing the temperature, can the crystal particle expand? Actually, what really happen to the structure when increase the temperature? Why its look bigger size compare to actual size. Does it mean the crystal of particle expand? or something happen to the particle? Can you explain for me what actually happen?

Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
What is a "crystal particle", what is its "actual size" (compared to what), and where does it look bigger?

Crystals (usually) expand a bit if they get hot. With increasing energy, the average distance between atoms increases, which can be seen at their potential function.
 
what i know. the crystals didnt expand. The distance of atoms vibrate and away from each others when increasing the energy. that why the size look bigger. may i right sir? i also still confuse about that. i did an experiment about plasma sputtering now, and i am realize that the size of grain will be increase with increasing the temperature. i don't know the truth theories of the crystal growth?
Thank for explaining that sir.
 
For me, it is hard to understand your posts.

The distance of atoms vibrate and away from each others when increasing the energy. that why the size look bigger.
As I posted, most crystals increase their size a bit if the temperature increases. The difference is small - you do not see it, you need some measurement tools for that.

i don't know the truth theories of the crystal growth?
Crystal growth is something different.
 

Similar threads

Crystal Oscillator Package (4 pins)
  • · Replies 3 ·
Replies
3
Views
2K
Determining ceramic particle sizes suspended in a fluid
  • · Replies 13 ·
Replies
13
Views
4K
An experiment to determine ceramic particle sizes
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad How can phonons "travel" if they are excitations of normal modes?
  • · Replies 7 ·
Replies
7
Views
4K
Growing piezoelectric crystals experiment
  • · Replies 2 ·
Replies
2
Views
2K
Laplace transform for a piezoelectric acceletometer
  • · Replies 4 ·
Replies
4
Views
5K
Graduate How Does MWI explain Type I PDC Photon Polarization Entanglement?
  • · Replies 19 ·
Replies
19
Views
1K
Experimental procedure for growing piezoelectric crystals
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad If electrons can be pointlike particles, why can't black holes?
  • · Replies 16 ·
Replies
16
Views
2K
Graduate Could the Laws of Physics Be Proportional to Entropy?
  • · Replies 5 ·
Replies
5
Views
1K