Switchable plasmon-induced transparency in gold nanoarrays on vanadium dioxide film

McGahan, Christina; Appavoo, Kannatassen; Haglund, Richard F.; Shapera, Ethan P.

doi:10.1116/1.4826561

Cited by 8 publications

(7 citation statements)

References 16 publications

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“…Electrochromism was reported for VO 2 and V 2 O 5 ‐based coatings . The above‐mentioned optical properties emphasize the suitability of vanadium oxide as a material of choice for optoelectronics such as optical switching, and also for energy‐saving smart windows …”

Section: Introductionmentioning

confidence: 93%

Vanadium Oxide Compounds: Structure, Properties, and Growth from the Gas Phase

Bahlawane¹,

Lenoble²

2014

Chemical Vapor Deposition

156

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The structure‐driven properties of vanadium oxide have inspired enormous developments in the last decades, especially as a smart material for energy, sensors, and optoelectronics. The large variety of stable and metastable structures of vanadium oxide is discussed, based on the calculated formation energies and a broad overview of their structure‐related properties. The established chemical deposition processes from the gas phase are reviewed with a particular emphasis on the implemented precursors and the obtained vanadium oxide phases. Although a significant fraction of relevant vanadium oxide compounds is achieved by these methods, there are still rewarding challenges related to their controlled elaboration and the investigation of their responsive properties.

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Section: Introductionmentioning

confidence: 93%

Vanadium Oxide Compounds: Structure, Properties, and Growth from the Gas Phase

Bahlawane¹,

Lenoble²

2014

Chemical Vapor Deposition

156

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“…Therefore, the metacanvas is analogous to the FPGA in three aspects: the compilation of mathematical logics into hardware to suit different applications; the resultant multifunctionalities within one single device; and the real‐time reprogrammability after the device is already deployed. Unlike previous lithographically made VO 2 devices that can only be switched ON/OFF with permanent patterns and fixed functionalities, the lithography‐free metacanvas is fully reconfigurable in terms of both patterns and functionalities (see Section S2 in the Supporting Information for detailed comparison). As such, the rapid, cost‐effective, and reversible compilation of photonic operators on the rewritable metacanvas with lithography‐free, micrometer‐sized features potentially enables a rich collection of photonics research and applications.…”

mentioning

confidence: 99%

A Lithography‐Free and Field‐Programmable Photonic Metacanvas

et al. 2017

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The unique correspondence between mathematical operators and photonic elements in wave optics enables quantitative analysis of light manipulation with individual optical devices. Phase-transition materials are able to provide real-time reconfigurability of these devices, which would create new optical functionalities via (re)compilation of photonic operators, as those achieved in other fields such as field-programmable gate arrays (FPGA). Here, by exploiting the hysteretic phase transition of vanadium dioxide, an all-solid, rewritable metacanvas on which nearly arbitrary photonic devices can be rapidly and repeatedly written and erased is presented. The writing is performed with a low-power laser and the entire process stays below 90 °C. Using the metacanvas, dynamic manipulation of optical waves is demonstrated for light propagation, polarization, and reconstruction. The metacanvas supports physical (re)compilation of photonic operators akin to that of FPGA, opening up possibilities where photonic elements can be field programmed to deliver complex, system-level functionalities.

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“…Generically, the quality factor is evaluated based on the enhanced local optical field resulting from an applied optical field,

Q = \frac{{{\rm{Enhanced}}|\vec{E}|}}{{{\rm{Incident}}|\vec{E}|}}

The analytic form of Q depends on the geometry of the metal–dielectric interface. While no analytic expressions are available for complicated cases such as π‐shaped nanostructures, [ 51 ] nanospirals, [ 52,53 ] and ring resonators, [ 54,55 ] the quality factor of two major classes of plasmonic devices has been defined analytically. For SPP at an extended planar interface the quality factor is [ 34 ]

{Q_{{\rm{SPP}}}}(\omega ) = \frac{{\varepsilon _1^2}}{{{\varepsilon _2}}}

For local surface plasmon resonances (LSPR) confined to the surfaces of metallic spheres the quality factor is [ 34,56 ]

{Q_{{\rm{LSPR}}}}(\omega )\; = \; - \frac{{{\varepsilon _1}}}{{{\varepsilon _2}}}

The different equations for the quality factors demonstrate that a single metal will not necessarily be the optimal material for all circumstances.…”

Section: Computational Approachmentioning

confidence: 99%

“…The analytic form of Q depends on the geometry of the metal-dielectric interface. While no analytic expressions are available for complicated cases such as π-shaped nanostructures, [51] nanospirals, [52,53] and ring resonators, [54,55] the quality factor of two major classes of plasmonic devices has been defined analytically. For SPP at an extended planar interface the quality factor is [34] www.advopticalmat.de…”

Section: Selection Criteriamentioning

confidence: 99%