Nondestructive measurement of striation defect spacing using laser diffraction

Dylan E. Haas, Dunbar P Birnie

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A simple method is presented for measuring the characteristic spacing between striation defects that sometimes develop when coatings are deposited by the spin-coating process. Striation defects, because of their substantial regularity of thickness variation, are able to diffract laser light. By measuring the diffraction angle, it is possible to determine a characteristic spacing that corresponds to the most dominant spatial frequency for the striation defects that have formed. This diffraction technique is compared with other methods for determining the average striation spacing, This noncontact characterization technique may also be applicable to other regularly or quasi-regularly spaced defect structures that appear in coatings or other materials. The limits and accuracy of this technique are discussed in detail.

Original languageEnglish
Pages (from-to)3355-3360
Number of pages6
JournalJournal of Materials Research
Volume16
Issue number12
Publication statusPublished - Dec 2001

Fingerprint

striation
Diffraction
spacing
Defects
Lasers
defects
diffraction
lasers
Coatings
Defect structures
Spin coating
coatings
regularity
coating

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Nondestructive measurement of striation defect spacing using laser diffraction. / Haas, Dylan E.; Birnie, Dunbar P.

In: Journal of Materials Research, Vol. 16, No. 12, 12.2001, p. 3355-3360.

Research output: Contribution to journalArticle

@article{005dd10f82a44b8f95168585feb28e14,
title = "Nondestructive measurement of striation defect spacing using laser diffraction",
abstract = "A simple method is presented for measuring the characteristic spacing between striation defects that sometimes develop when coatings are deposited by the spin-coating process. Striation defects, because of their substantial regularity of thickness variation, are able to diffract laser light. By measuring the diffraction angle, it is possible to determine a characteristic spacing that corresponds to the most dominant spatial frequency for the striation defects that have formed. This diffraction technique is compared with other methods for determining the average striation spacing, This noncontact characterization technique may also be applicable to other regularly or quasi-regularly spaced defect structures that appear in coatings or other materials. The limits and accuracy of this technique are discussed in detail.",
author = "Haas, {Dylan E.} and Birnie, {Dunbar P}",
year = "2001",
month = "12",
language = "English",
volume = "16",
pages = "3355--3360",
journal = "Journal of Materials Research",
issn = "0884-2914",
publisher = "Materials Research Society",
number = "12",

}

TY - JOUR

T1 - Nondestructive measurement of striation defect spacing using laser diffraction

AU - Haas, Dylan E.

AU - Birnie, Dunbar P

PY - 2001/12

Y1 - 2001/12

N2 - A simple method is presented for measuring the characteristic spacing between striation defects that sometimes develop when coatings are deposited by the spin-coating process. Striation defects, because of their substantial regularity of thickness variation, are able to diffract laser light. By measuring the diffraction angle, it is possible to determine a characteristic spacing that corresponds to the most dominant spatial frequency for the striation defects that have formed. This diffraction technique is compared with other methods for determining the average striation spacing, This noncontact characterization technique may also be applicable to other regularly or quasi-regularly spaced defect structures that appear in coatings or other materials. The limits and accuracy of this technique are discussed in detail.

AB - A simple method is presented for measuring the characteristic spacing between striation defects that sometimes develop when coatings are deposited by the spin-coating process. Striation defects, because of their substantial regularity of thickness variation, are able to diffract laser light. By measuring the diffraction angle, it is possible to determine a characteristic spacing that corresponds to the most dominant spatial frequency for the striation defects that have formed. This diffraction technique is compared with other methods for determining the average striation spacing, This noncontact characterization technique may also be applicable to other regularly or quasi-regularly spaced defect structures that appear in coatings or other materials. The limits and accuracy of this technique are discussed in detail.

UR - http://www.scopus.com/inward/record.url?scp=0035739157&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035739157&partnerID=8YFLogxK

M3 - Article

VL - 16

SP - 3355

EP - 3360

JO - Journal of Materials Research

JF - Journal of Materials Research

SN - 0884-2914

IS - 12

ER -