Three-dimensional artificial chirality towards low-cost and ultra-sensitive enantioselective sensing

Abstract

Artificial chiral structures have possible applications in the field of enantioselective signal sensing. Advanced nanofabrication methods enable a large diversity in geometric structures and broad selectivity of materials, which can...

Three-dimensional plasmonic nanoclusters driven by co-assembly of thermo-plasmonic nanoparticles and colloidal quantum dots

“…Furthermore, we believe that heterogeneous NP clusters with the micropipettebased co-assembly method will be applied to chiral gold nanoparticles, 44 providing unprecedent chiroptical responses at optical frequencies. 45,46…”

Ultrathin Suspended Chiral Metasurfaces for Enantiodiscrimination

“…Chirality refers to the asymmetry property in which an object cannot superpose with its mirror image via rotation or translation operations. [ 1–4 ] It is quite ubiquitous in nature and has far‐reaching implications. Chiroptical effects, such as circular dichroism (CD) and optical rotation dispersion, are produced via the interaction between circularly polarized light and chiral matters.…”

“…Chirality refers to the asymmetry property in which an object cannot superpose with its mirror image via rotation or translation operations. [1][2][3][4] It is quite ubiquitous in nature and has far-reaching implications. Chiroptical effects, such as circular dichroism (CD) and optical rotation dispersion, are produced resultant coverage issue of the planarization layer, these suspended bilayer metasurfaces can directly contact the sensing targets with two-side exposed surfaces, leading to significant improvement of the detecting sensitivity.…”

Dual-Square-Split-Ring-Enclosed Microstrip-Based Sensor for Noninvasive Label-Free Detection

“…Different types of microwave sensors have been developed with different methodologies for sensing applications within the operating frequency range. For liquid characterization [ 10 ], a microstrip-fed rectangular patch antenna using a Rogers RO 3035 as a host medium with two port networks was presented where the capillary glass tube lay parallel to the surface of the sensor, where the large diversity of geometric orientation [ 11 ] of the chiral structure showed a new way to manufacture three-dimensional structures. The other methodology using metamaterial absorber technology was utilized to accumulate the electromagnetic signal with a silver-based metallic layer to form two concentric rings [ 12 ], which produced two narrow absorption peaks.…”