Choosing a Review Figure Layout: Circle, Matrix or Panels

Identify the reader’s task

Classification groups related items. Comparison examines the same criteria across items. A process follows changes or stages. A single figure can contain more than one task, but each region should make its own task identifiable.

Compare the same placeholder content

Take a membrane topic with three information roles: structure, design strategies and applications. A circular version may put structure at the center and strategies around it. A matrix needs consistent comparison criteria for every strategy. A panel version can give structure, strategy and application separate reading areas. These are teaching alternatives, not new performance data.

Layout	Advantage for the task	Failure to watch for
Circular	Common topic and related categories	Unrelated hierarchy levels treated as equal sectors
Matrix	Repeated criteria	Incomparable rows or empty cells hidden by decoration
Panels	Separate levels or questions	No explicit order or cross-panel identity

Read the PDMS archive as a hierarchy

The semicircular PDMS figure locates the base membrane near the center, modification strategies in sectors and applications outside. Copying the outline without preserving those roles can obscure the review's logic.

Remove or split before shrinking

Mark duplicated labels, subsidiary pathways and content that can move to the caption. If two regions answer unrelated questions, separate them into panels or figures. Test the longest text and smallest objects at final size after each revision.

Continue with the review tutorial, circular tutorial or online workflow.