Plasmonic Cu nanostructures in ZnO as hyperbolic metamaterial thin films

Huang, Jijie; Wang, Xuejing; Phuah, Xin Li; Lu, Ping; Qi, Zhimin; Wang, Haiyan

doi:10.1016/j.mtnano.2019.100052

Cited by 32 publications

(24 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different from the typical “top‐down” techniques such as electron beam lithography (EBL), [ 20,21 ] focused ion beam (FIB), [ 22,23 ] and “bottom‐up” electrochemical templating methods, [ 24,25 ] the direct growth of self‐assembled oxide‐metal hybrid metamaterials in the vertically aligned nanocomposite (VAN) thin film form has been demonstrated as an alternative “bottom‐up” approach. [ 26–30 ] Interestingly, highly tunable optical properties such as localized surface plasmon resonance (LSPR) and hyperbolic dispersion shift in the UV–Vis–NIR wavelength region achieved by varying nanostructure aspect ratios, [ 31,32 ] pillar density, [ 32–34 ] and substrate selections [ 35,36 ] all present enormous potentials for these new class of hybrid thin films. Furthermore, by properly selecting the metal nanopillar phase and oxide or nitride matrix, other novel functionalities such as tunable ferroelectric, ferromagnetic, and magnetoelectric coupling and thermal stability can also be enabled.…”

Section: Introductionmentioning

confidence: 99%

Design of 3D Oxide–Metal Hybrid Metamaterial for Tailorable Light–Matter Interactions in Visible and Near‐Infrared Region

Zhang

Misra

et al. 2020

Advanced Optical Materials

View full text Add to dashboard Cite

Hyper bolic metamaterials (HMMs) have recently gained extensive research attention because of their highly anisotropic structures that lead to metallic behavior in one or two directions and dielectric features in the other(s). HMMs have great potential in applications ranging from fluorescence engineering, [7,8] nanoimaging, [2,9] sub surface sensing, [10] spontaneous [11] and thermal emissions [12,13] to single photon resources. [14] Two typical artificial struc tures including metallic nanowires (NWs) embedded in dielectric matrix (Type I: ε xx , ε yy > 0, ε zz < 0) and dielectric/metallic multi layers (MLs) (Type II: ε xx , ε yy < 0, ε zz > 0) have been shown to present hyperbolic dis persion. [15,16] Based on the hyperbolic dis persion wavelength ranges of interest, plasmonic metals such as Ag, Au, and Cu are among the best candidates in the UVvis region, and transparent conducting oxides (i.e., ITO, AZO) and transitionmetal nitrides (i.e., TiN, ZrN) are alternative plas monic materials in the nearIR wavelength region, while highly doped semiconductors are found to be alternative hyperbolic metamaterials in the midIR and longwavelength regions. [17-19] Different from the typical "topdown" techniques such as electron beam lithography (EBL), [20,21] focused ion beam (FIB), [22,23] and "bottomup" electrochemical templating methods, [24,25] the direct growth of selfassembled oxidemetal hybrid metamaterials in the vertically aligned nanocomposite (VAN) thin film form has been demonstrated as an alternative "bottomup" approach. [26-30] Interestingly, highly tunable optical properties such as localized surface plasmon resonance (LSPR) and hyperbolic dispersion shift in the UV-Vis-NIR wavelength region achieved by varying nanostructure aspect ratios, [31,32] pillar density, [32-34] and substrate selections [35,36] all present enormous potentials for these new class of hybrid thin films. Furthermore, by properly selecting the metal nanopillar phase and oxide or nitride matrix, other novel functionalities such as tunable ferroelectric, ferromagnetic, and magnetoelectric cou pling and thermal stability can also be enabled. [37-41] Very recently, a new 3D framework strain engineering has been demonstrated in oxideoxidebased thin films by stacking Dielectric-metallic hybrid metamaterials exhibit extraordinary optical properties due to the light-matter interactions at the dielectric-metallic interfaces. The ability in precision control of the light-matter interactions in nanoscale is key to tailor the optical properties of hybrid metamaterials. In this work, a complex 3D framework of multilayered self-assembled BaTiO 3 (BTO)-Au hybrid thin films is demonstrated with such precision control of the lightmatter interaction in nanoscale. Unique "bamboo-like" Au nanostructures are formed via the bilayer and trilayer stacking of BTO-Au hybrid layers with interlayers of SrTiO 3 , CeO 2 , or MgO. Different film strain states introduced by the three interlayers result in variable diameter and density of Au nanopillars. Both simulate...

show abstract

Section: Introductionmentioning

confidence: 99%

Design of 3D Oxide–Metal Hybrid Metamaterial for Tailorable Light–Matter Interactions in Visible and Near‐Infrared Region

Zhang

Misra

et al. 2020

Advanced Optical Materials

View full text Add to dashboard Cite

show abstract

Section: Part Iii: Permittivity Tuning In Other Two‐phase Metal–oxide Van Systemsmentioning

confidence: 99%

Self‐Assembled Metal–Dielectric Hybrid Metamaterials in Vertically Aligned Nanocomposite Form with Tailorable Optical Properties and Coupled Multifunctionalities

Zhang

Wang

2021

Advanced Photonics Research

View full text Add to dashboard Cite

Metal–dielectric hybrid metamaterials have attracted increasing research interest in recent years because of their novel optical properties and promising applications in the fields of electronic and photonic devices. Dielectric permittivity is a key parameter that strongly influences the optical properties of materials. By self‐assembling the metallic and dielectric components in a pillar‐in‐matrix structure, a strong anisotropic structure forms and results in opposite signs of permittivity components (i.e., ε|| > 0 and ε⊥ < 0, or vice versa) and exotic optical responses including hyperbolic dispersion in the visible to near‐infrared region. Herein, the main approaches of tuning the permittivity in self‐assembled metal–dielectric vertically aligned nanocomposite (VAN) thin films are reviewed, including tuning the metal pillar density and geometry, film strain state and background pressure during growth, and seeking other metal‐free and complex structure designs. Future research directions are also proposed, including unique approaches to improve their thermal stability, integrate on flexible substrates toward wearable device fabrication, and explore real‐time tunable metamaterials.

show abstract

“…[15][16][17][18][19][20][21] The PLD technique has already been used to achieve stability in oxidemetal and nitride-metal hybrid materials. [22][23][24] The critical issue to overcome for the oxide-nanoalloy system is to achieve a sufficiently mixed alloy without segregation.…”

Section: Introductionmentioning

confidence: 99%

Deposition pressure-induced microstructure control and plasmonic property tuning in hybrid ZnO–Ag_xAu_1−x thin films

et al. 2021

View full text Add to dashboard Cite

show abstract

Plasmonic Cu nanostructures in ZnO as hyperbolic metamaterial thin films

Cited by 32 publications

References 37 publications

Design of 3D Oxide–Metal Hybrid Metamaterial for Tailorable Light–Matter Interactions in Visible and Near‐Infrared Region

Design of 3D Oxide–Metal Hybrid Metamaterial for Tailorable Light–Matter Interactions in Visible and Near‐Infrared Region

Self‐Assembled Metal–Dielectric Hybrid Metamaterials in Vertically Aligned Nanocomposite Form with Tailorable Optical Properties and Coupled Multifunctionalities

Deposition pressure-induced microstructure control and plasmonic property tuning in hybrid ZnO–Ag_xAu_1−x thin films

Contact Info

Product

Resources

About

Plasmonic Cu nanostructures in ZnO as hyperbolic metamaterial thin films

Cited by 32 publications

References 37 publications

Design of 3D Oxide–Metal Hybrid Metamaterial for Tailorable Light–Matter Interactions in Visible and Near‐Infrared Region

Design of 3D Oxide–Metal Hybrid Metamaterial for Tailorable Light–Matter Interactions in Visible and Near‐Infrared Region

Self‐Assembled Metal–Dielectric Hybrid Metamaterials in Vertically Aligned Nanocomposite Form with Tailorable Optical Properties and Coupled Multifunctionalities

Deposition pressure-induced microstructure control and plasmonic property tuning in hybrid ZnO–AgxAu1−x thin films

Contact Info

Product

Resources

About

Deposition pressure-induced microstructure control and plasmonic property tuning in hybrid ZnO–Ag_xAu_1−x thin films