1990 Photomicrography Competition

Flourescien crystals

Norm Barker

Affiliation
Johns Hopkins School of Medicine
Department of Pathology
Baltimore, Maryland, USA
Technique
Polarized Light
Magnification
40x

Stair-step twinning on superconductor substrate wafer cut from single LaA103 crystal

Michael W. Davidson

Affiliation
Florida State University
Center for Materials Research and Technology
Tallahassee, Florida, USA
Technique
Polarized Light
Magnification
10x

Melted sugar quenched in liquid nitrogen

Alejandro Andreatta

Affiliation
UC Santa Barbara
Engineering Materials Department
Santa Barbara, California, USA
Technique
Polarized Light
Magnification
50x