English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Observing and taming unusual effects arising from non-trivial light-matterinteraction has always triggered scientists to better understand Nature anddevelop technological tools towards implementing novel applications. Recently,several unusual optomechanical effects have been unveiled when subtlespin-orbit interactions come at play to build up optical forces and torquesthat are hardly seen in everyday life, such as negative optical radiationpressure, transverse optical forces, or left-handed optical torques. To date,there are only a few experimental proposals to reveal these effects despitetremendous conceptual advances. In particular, spin-dependent lateral forcesand their angular analog are done either at the expense of direct observationsor at the cost of specific instrumental complexity. Here we report on naked-eyeidentification of light-induced spin-dependent lateral displacements ofcentimeter-sized objects endowed with structured birefringence. Its angularcounterpart is also discussed and the observation of left-handed macroscopicrotational motion is reported. The unveiled effects are ultimately driven bylateral optical force fields that are five orders of magnitude larger thanthose reported so far. These results allow structured light-matter interactionto move from a scientific curiosity to a new asset for the existingmultidisciplinary optical manipulation toolbox across length scales. Inaddition, this highlights the spin-orbit optomechanics of anisotropic andinhomogeneous media, which is just beginning to be explored.

Macroscopic direct observation of optical spin-dependent lateral forces and left-handed torques