Optically Transparent Piezoelectric Materials

Click For Summary

Discussion Overview

The discussion centers on the exploration of optically transparent piezoelectric materials suitable for converting pressure on touch screens into electrical energy. Participants are particularly interested in materials that are thin and do not require metallization for effective use in a science fair project.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about optically transparent piezoelectric materials for a science fair project.
  • Another participant suggests quartz as a potential material.
  • A participant expresses interest in using piezoelectric quartz without metallizing the top layer to utilize electrical discharge.
  • One participant proposes that conductive and transparent surfaces can be printed on quartz to measure contact position, noting that the voltage signal produced by quartz has a very low current.
  • Another approach mentioned involves coating the surfaces of the quartz with a thin resistive material and grounding the edges to produce currents proportional to touch position.

Areas of Agreement / Disagreement

Participants present multiple approaches and ideas regarding the use of quartz and other methods, indicating that there is no consensus on a single solution or method for utilizing optically transparent piezoelectric materials.

Contextual Notes

Participants discuss the limitations of current methods, including the low current produced by quartz and the challenges associated with metallization and surface coatings.

tenpinfaze
Messages
2
Reaction score
0
Does anyone know of any optically transparent (and preferably thin) piezoelectric materials I could use for a science fair project converting pressure on the glass of touch screens to electrical energy?
 
Engineering news on Phys.org
tenpinfaze said:
I was looking for a way to use the piezoelectric quartz without having to metallize the top layer in order to utilize the electrical discharge.
Surfaces can be conductive and transparent. The voltage signal produced by quartz has a very low current. That means you can print many thin conductive patterns on the surface that measures the position of the contact.

Another way is to coat the entire back and front surfaces with a very thin resistive material. Ground the front edges, but make connections to the back left and right, top and bottom edges. Touching the surface will produce currents at two opposite edges that are proportional to position between those edges.
 

Similar threads

Replies
4
Views
3K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 2 ·
Replies
2
Views
5K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 3 ·
Replies
3
Views
5K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 14 ·
Replies
14
Views
4K
  • · Replies 10 ·
Replies
10
Views
5K
Replies
1
Views
948
Replies
7
Views
5K