Abstract

Turning the surfaces of noble metals (metasurfaces) into black (highly absorptive) surfaces can be potentially applied in thermophotovoltaics, sensing, tailoring thermal emissivity, etc. Here we demonstrate an extremely broadband absorber for the 900–1600 nm wavelength range with robust high absorption efficiency. The inexpensive droplet evaporation method is implemented to create patterns of nanoparticles dispersed on a gold film spaced by a thin dielectric layer. The diversity of the complicated random stacking of the chemically synthesized gold nanorods is the major factor for the broad absorption band. Such a metamaterial absorber may pave the way for cost-effective manufacture of large-area black metasurfaces.

© 2013 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Numerical study of an ultra-broadband near-perfect solar absorber in the visible and near-infrared region

Dong Wu, Chang Liu, Yumin Liu, Li Yu, Zhongyuan Yu, Lei Chen, Rui Ma, and Han Ye
Opt. Lett. 42(3) 450-453 (2017)

Wide-angle broadband terahertz metamaterial absorber with a multilayered heterostructure

Junxing Fan, Dong Xiao, Qiong Wang, Qiang Liu, and Zhengbiao Ouyang
Appl. Opt. 56(15) 4388-4391 (2017)

Broadband infrared metamaterial absorber with visible transparency using ITO as ground plane

Govind Dayal and S. Anantha Ramakrishna
Opt. Express 22(12) 15104-15110 (2014)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription