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Area of Science:

  • Photonics and Materials Science
  • Optoelectronics
  • Chirality Studies

Background:

  • Optical chirality is crucial for technologies like enantiomer identification and optical communications.
  • Current methods for achieving optical chirality often involve complex 3D structures and require high energy input for reconfiguration, limiting on-chip integration.
  • Active reconfiguration of chiral responses is challenging due to the need for intense external stimuli.

Purpose of the Study:

  • To introduce a low-bias, electrically programmable synthetic chiral material.
  • To demonstrate remarkable reconfiguration capabilities among various chiral states (levorotatory, dextrorotatory, achiral, racemic).
  • To enable a reconfigurable spatial light modulator for terahertz imaging.

Main Methods:

  • Development of a synthetic chiral paradigm with electrical programmability.
  • Demonstration of switchable optical activity through controlled chiral conformations.
  • Implementation of a transmission-type duplex spatial light modulator for terahertz single-pixel imaging.

Main Results:

  • Achieved a low-bias, electrically programmable chiral material with versatile reconfiguration.
  • Successfully demonstrated switchable optical activity based on controllable chiral states.
  • Developed a prototype spatial light modulator for terahertz imaging with reconfigurable chirality.

Conclusions:

  • The developed synthetic chiral paradigm offers a new strategy for reconfigurable stereoselective photonic applications.
  • This work paves the way for on-chip programmable chiral devices with broad applications in biology, medicine, chemistry, and photonics.
  • The electrically programmable nature overcomes limitations of previous chiral technologies, enabling practical on-chip integration.