Total optical torque and angular momentum conservation in dye-doped liquid crystal droplets spun by circularly polarized light (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Total optical torque and angular momentum conservation in dye-doped liquid crystal droplets spun by circularly polarized light (Articolo in rivista) (literal)

Anno

• 2006-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1080/15421400600654157 (literal)

Alternative label

• Manzo, C; Paparo, D; Marrucci, L; Janossy, I (2006)
  Total optical torque and angular momentum conservation in dye-doped liquid crystal droplets spun by circularly polarized light
  in Molecular crystals and liquid crystals (Phila. Pa. : 2003)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Manzo, C; Paparo, D; Marrucci, L; Janossy, I (literal)

Pagina inizio

• 101 (literal)

Pagina fine

• 110 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 454 (literal)

Rivista

• Molecular crystals and liquid crystals (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 10 (literal)

Note

• ISI Web of Science (WoS) (literal)
• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Consiglio Nazionale delle Ricerche (CNR); University of Naples Federico II; Hungarian Academy of Sciences (literal)

Titolo

• Total optical torque and angular momentum conservation in dye-doped liquid crystal droplets spun by circularly polarized light (literal)

Abstract

• Micrometric droplets of nematic liquid crystal dispersed in water were trapped and made to spin in the focus of a circularly polarized laser beam. The measured rotation speed is directly proportional to the angular momentum exchanged per unit time by the droplet with the electromagnetic field, that is to the total optical torque acting on the droplet. We searched for a possible enhancement of this total torque when the liquid crystal of the droplets was doped with a light-absorbing dye. In contrast to the local optical torque acting on the molecular director, which is known to be strongly enhanced by the presence of the dye, the total torque acting on the droplet as a whole did not show any enhancement. This null result is in agreement with the leading theory of the dye-assisted (or photoinduced) optical torque, which postulates that this torque is associated with an internal angular momentum exchange between different material degrees of freedom, namely orientational and translational. Moreover, our findings confirm the predicted existence of a photoinduced stress-tensor acting on the dye-doped liquid crystal. (literal)

Prodotto di

• Aspetti fondamentali della fisica delle perovskiti (MD.P04.018.001) (Modulo)

Autore CNR

• DOMENICO PAPARO (Persona)
• LORENZO MARRUCCI (Unità di personale esterno)

Insieme di parole chiave

• Keywords of "Total optical torque and angular momentum conservation in dye-doped liquid crystal droplets spun by circularly polarized light" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• LORENZO MARRUCCI (Unità di personale esterno)
• DOMENICO PAPARO (Persona)

Prodotto

• Aspetti fondamentali della fisica delle perovskiti (MD.P04.018.001) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Molecular crystals and liquid crystals (Rivista)

Insieme di parole chiave di

• Keywords of "Total optical torque and angular momentum conservation in dye-doped liquid crystal droplets spun by circularly polarized light" (Insieme di parole chiave)