Abstract
Terahertz (THz) shielding becomes increasingly important with the growing development of THz electronics and devices. Primarily materials based on carbon nanostructures or polymer–carbon nanocomposites have been explored for this application. Herein, significantly enhanced THz shielding efficiencies for 2D titanium carbide (Ti 3 C 2 MXene) thin films with nanoscale THz metamaterials are presented. Nanoscale slot antenna arrays with strong resonances at certain frequencies enhance THz electromagnetic waves up to three orders of magnitude in transmission, which in turn enormously increases the shielding performance in combination with MXene films. Drop-casting of a colloidal solution of MXene (a few micrograms of dry material) can produce an ultrathin film (several tens of nanometers in thickness) on a slot antenna array. Consequently, THz waves strongly localized in the near-field regime by the slot antenna undergo enhanced absorption through the film with a magnified effective refractive index. Finally, the combination of an ultrathin MXene film and a nano-metamaterial shows excellent shielding performance in the THz range.
| Original language | English |
|---|---|
| Article number | 1701076 |
| Journal | Advanced Optical Materials |
| Volume | 6 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2018 Mar 5 |
Fingerprint
Keywords
- 2D materials
- metamaterials
- MXene
- shielding efficiency
- terahertz spectroscopy
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
Cite this
Enhanced Terahertz Shielding of MXenes with Nano-Metamaterials. / Choi, Geunchang; Shahzad, Faisal; Bahk, Young Mi; Jhon, Young Min; Park, Hyunchul; Alhabeb, Mohamed; Anasori, Babak; Kim, Dai Sik; Koo, Chong Min; Gogotsi, Yury; Seo, Minah.
In: Advanced Optical Materials, Vol. 6, No. 5, 1701076, 05.03.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhanced Terahertz Shielding of MXenes with Nano-Metamaterials
AU - Choi, Geunchang
AU - Shahzad, Faisal
AU - Bahk, Young Mi
AU - Jhon, Young Min
AU - Park, Hyunchul
AU - Alhabeb, Mohamed
AU - Anasori, Babak
AU - Kim, Dai Sik
AU - Koo, Chong Min
AU - Gogotsi, Yury
AU - Seo, Minah
PY - 2018/3/5
Y1 - 2018/3/5
N2 - Terahertz (THz) shielding becomes increasingly important with the growing development of THz electronics and devices. Primarily materials based on carbon nanostructures or polymer–carbon nanocomposites have been explored for this application. Herein, significantly enhanced THz shielding efficiencies for 2D titanium carbide (Ti 3 C 2 MXene) thin films with nanoscale THz metamaterials are presented. Nanoscale slot antenna arrays with strong resonances at certain frequencies enhance THz electromagnetic waves up to three orders of magnitude in transmission, which in turn enormously increases the shielding performance in combination with MXene films. Drop-casting of a colloidal solution of MXene (a few micrograms of dry material) can produce an ultrathin film (several tens of nanometers in thickness) on a slot antenna array. Consequently, THz waves strongly localized in the near-field regime by the slot antenna undergo enhanced absorption through the film with a magnified effective refractive index. Finally, the combination of an ultrathin MXene film and a nano-metamaterial shows excellent shielding performance in the THz range.
AB - Terahertz (THz) shielding becomes increasingly important with the growing development of THz electronics and devices. Primarily materials based on carbon nanostructures or polymer–carbon nanocomposites have been explored for this application. Herein, significantly enhanced THz shielding efficiencies for 2D titanium carbide (Ti 3 C 2 MXene) thin films with nanoscale THz metamaterials are presented. Nanoscale slot antenna arrays with strong resonances at certain frequencies enhance THz electromagnetic waves up to three orders of magnitude in transmission, which in turn enormously increases the shielding performance in combination with MXene films. Drop-casting of a colloidal solution of MXene (a few micrograms of dry material) can produce an ultrathin film (several tens of nanometers in thickness) on a slot antenna array. Consequently, THz waves strongly localized in the near-field regime by the slot antenna undergo enhanced absorption through the film with a magnified effective refractive index. Finally, the combination of an ultrathin MXene film and a nano-metamaterial shows excellent shielding performance in the THz range.
KW - 2D materials
KW - metamaterials
KW - MXene
KW - shielding efficiency
KW - terahertz spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85040654227&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85040654227&partnerID=8YFLogxK
U2 - 10.1002/adom.201701076
DO - 10.1002/adom.201701076
M3 - Article
AN - SCOPUS:85040654227
VL - 6
JO - Advanced Optical Materials
JF - Advanced Optical Materials
SN - 2195-1071
IS - 5
M1 - 1701076
ER -