Enhanced Near-Field Chirality in Periodic Arrays of Si Nanowires for Chiral Sensing
Nanomaterials can be specially designed to enhance optical chirality and their interaction with chiral molecules can lead to enhanced enantioselectivity. Here we propose periodic arrays of Si nanowires for the generation of enhanced near-field chirality. Such structures confine the incident electrom...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-02-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/24/5/853 |
| _version_ | 1818952332940935168 |
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| author | Emilija Petronijevic Concita Sibilia |
| author_facet | Emilija Petronijevic Concita Sibilia |
| author_sort | Emilija Petronijevic |
| collection | DOAJ |
| description | Nanomaterials can be specially designed to enhance optical chirality and their interaction with chiral molecules can lead to enhanced enantioselectivity. Here we propose periodic arrays of Si nanowires for the generation of enhanced near-field chirality. Such structures confine the incident electromagnetic field into specific resonant modes, which leads to an increase in local optical chirality. We investigate and optimize near-field chirality with respect to the geometric parameters and excitation scheme. Specially, we propose a simple experiment for the enhanced enantioselectivity, and optimize the average chirality depending on the possible position of the chiral molecule. We believe that such a simple achiral nanowire approach can be functionalized to give enhanced chirality in the spectral range of interest and thus lead to better discrimination of enantiomers. |
| first_indexed | 2024-12-20T09:48:42Z |
| format | Article |
| id | doaj.art-302ef3efdc0f49e387402523a7a6d1d1 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-12-20T09:48:42Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-302ef3efdc0f49e387402523a7a6d1d12022-12-21T19:44:39ZengMDPI AGMolecules1420-30492019-02-0124585310.3390/molecules24050853molecules24050853Enhanced Near-Field Chirality in Periodic Arrays of Si Nanowires for Chiral SensingEmilija Petronijevic0Concita Sibilia1Department S.B.A.I., Sapienza Università di Roma, Via A. Scarpa 14, 00161 Rome, ItalyDepartment S.B.A.I., Sapienza Università di Roma, Via A. Scarpa 14, 00161 Rome, ItalyNanomaterials can be specially designed to enhance optical chirality and their interaction with chiral molecules can lead to enhanced enantioselectivity. Here we propose periodic arrays of Si nanowires for the generation of enhanced near-field chirality. Such structures confine the incident electromagnetic field into specific resonant modes, which leads to an increase in local optical chirality. We investigate and optimize near-field chirality with respect to the geometric parameters and excitation scheme. Specially, we propose a simple experiment for the enhanced enantioselectivity, and optimize the average chirality depending on the possible position of the chiral molecule. We believe that such a simple achiral nanowire approach can be functionalized to give enhanced chirality in the spectral range of interest and thus lead to better discrimination of enantiomers.https://www.mdpi.com/1420-3049/24/5/853semiconductor nanowireschiralityenantioselectivitynear-field optical chirality |
| spellingShingle | Emilija Petronijevic Concita Sibilia Enhanced Near-Field Chirality in Periodic Arrays of Si Nanowires for Chiral Sensing Molecules semiconductor nanowires chirality enantioselectivity near-field optical chirality |
| title | Enhanced Near-Field Chirality in Periodic Arrays of Si Nanowires for Chiral Sensing |
| title_full | Enhanced Near-Field Chirality in Periodic Arrays of Si Nanowires for Chiral Sensing |
| title_fullStr | Enhanced Near-Field Chirality in Periodic Arrays of Si Nanowires for Chiral Sensing |
| title_full_unstemmed | Enhanced Near-Field Chirality in Periodic Arrays of Si Nanowires for Chiral Sensing |
| title_short | Enhanced Near-Field Chirality in Periodic Arrays of Si Nanowires for Chiral Sensing |
| title_sort | enhanced near field chirality in periodic arrays of si nanowires for chiral sensing |
| topic | semiconductor nanowires chirality enantioselectivity near-field optical chirality |
| url | https://www.mdpi.com/1420-3049/24/5/853 |
| work_keys_str_mv | AT emilijapetronijevic enhancednearfieldchiralityinperiodicarraysofsinanowiresforchiralsensing AT concitasibilia enhancednearfieldchiralityinperiodicarraysofsinanowiresforchiralsensing |