Characterization of Silver Nanowire Layers in the Terahertz Frequency Range

Materials

Dmytro B. But¹  Dmitri Lioubtchenko¹  Aleksandra Przewłoka¹  Kamil Stelmaszczyk¹  Wojciech Knap¹  Alvydas Lisauskas¹  Maksym Dub¹  Aleksandra Krajewska¹  Irina Nefedova²  Serguei Smirnov³  Joachim Oberhammer³  Igor S. Nefedov⁴  Dariusz Zasada⁵  Valentin S. Chebotarev⁶  Petr S. Demchenko⁶  Dmitry V. Zykov⁶  Mikhail K. Khodzitsky⁶ 

[1] CENTERA Laboratories, Institute of High Pressure Physics PAS, 01-142 Warsaw, Poland;Department of Electronics and Nanoengineering, School of Electrical Engineering, Aalto University, 02150 Espoo, Finland;Department of Micro and Nanosystems, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden;Department of Physics, Saratov National Research State University, 410012 Saratov, Russia;Faculty of Advanced Technologies and Chemistry, Institute of Materials Science and Engineering, Military University of Technology, 00-908 Warsaw, Poland;THz Biomedicine Laboratory, ITMO University, 197101 Saint Petersburg, Russia;

关键词: silver nanowire;    AgNWs;    terahertz time-domain spectroscopy;    terahertz frequency-domain spectroscopy;   

DOI  :  10.3390/ma14237399

来源: DOAJ

【 摘 要 】

Thin layers of silver nanowires are commonly studied for transparent electronics. However, reports of their terahertz (THz) properties are scarce. Here, we present the electrical and optical properties of thin silver nanowire layers with increasing densities at THz frequencies. We demonstrate that the absorbance, transmittance and reflectance of the metal nanowire layers in the frequency range of 0.2 THz to 1.3 THz is non-monotonic and depends on the nanowire dimensions and filling factor. We also present and validate a theoretical approach describing well the experimental results and allowing the fitting of the THz response of the nanowire layers by a Drude–Smith model of conductivity. Our results pave the way toward the application of silver nanowires as a prospective material for transparent and conductive coatings, and printable antennas operating in the terahertz range—significant for future wireless communication devices.

【 授权许可】

Unknown