Soft and transient magnesium plasmonics for environmental and biomedical sensing

Li, Ruomu; Xie, Suxia; Zhang, Labao; Li, Liqiang; Kong, Deying; Wang, Qiang; Xin, Run; Sheng, Xing; Yin, Lan; Yu, Cunjiang; Yu, Zongfu; Wang, Xinran; Gao, Li

doi:10.1007/s12274-018-2028-6

Cited by 25 publications

(20 citation statements)

References 48 publications

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“…Recently, Mg has received significant attention as an active NNPM with a large extinction coefficient and broadband optical response covering the UV–vis-NIR range. ,, Indeed, Mg NPs have found a range of applications including chiral, biological, and environmental sensing, ,− dynamic nanoplasmonics, and switchable plasmonic devices . One fascinating feature of Mg is its distinctive capacity to absorb atomic hydrogen and form dielectric magnesium hydride (MgH 2 ) with its SPR feature being vanished.…”

Section: Photocatalytic Applications Of Nnpmsmentioning

confidence: 99%

Non-Noble Plasmonic Metal-Based Photocatalysts

et al. 2022

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Solar-to-chemical energy conversion via heterogeneous photocatalysis is one of the sustainable approaches to tackle the growing environmental and energy challenges. Among various promising photocatalytic materials, plasmonic-driven photocatalysts feature prominent solar-driven surface plasmon resonance (SPR). Non-noble plasmonic metals (NNPMs)-based photocatalysts have been identified as a unique alternative to noble metal-based ones due to their advantages like earth-abundance, cost-effectiveness, and large-scale application capability. This review comprehensively summarizes the most recent advances in the synthesis, characterization, and properties of NNPMs-based photocatalysts. After introducing the fundamental principles of SPR, the attributes and functionalities of NNPMs in governing surface/interfacial photocatalytic processes are presented. Next, the utilization of NNPMs-based photocatalytic materials for the removal of pollutants, water splitting, CO2 reduction, and organic transformations is discussed. The review concludes with current challenges and perspectives in advancing the NNPMs-based photocatalysts, which are timely and important to plasmon-based photocatalysis, a truly interdisciplinary field across materials science, chemistry, and physics.

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Section: Photocatalytic Applications Of Nnpmsmentioning

confidence: 99%

Non-Noble Plasmonic Metal-Based Photocatalysts

et al. 2022

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“…As summarized in a recent review paper, beyond the noble metals such as silver and gold that have been widely used in nanooptics, alternative materials that can support plasmonic resonance have been recently studied. Among these materials, magnesium (Mg) and palladium (Pd) have been intensively investigated due to their tremendously attractive material characteristics that can be exploited to enabling reconfigurable metasurfaces.…”

Section: Other Materials and Methodsmentioning

confidence: 99%

“…Besides the hydrogenation process, Mg metasurfaces actually offer a novel platform for exploring reconfigurable plasmonics based on many other chemical reactions owing to Mg's relatively active chemical characteristics. Taking advantage of the fact that Mg is a dissolvable conductor, Li et al recently reported Mg metasurfaces for indirect nanoplasmonic environmental and biomedical sensing in the visible region . Experiments showed that, besides the detection of ambient conditions, the humidity‐sensitive optical response of Mg metasurfaces fabricated on top of flexible nanoengineered polyurethane templates can be extended to monitor physiological processes, such as physical activities, by sensing sweating on the skin.…”

Section: Other Materials and Methodsmentioning

confidence: 99%

Recent Progress in Active Optical Metasurfaces

Kang

Jenkins

Werner

2019

Advanced Optical Materials

154

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Evolving from metamaterials, optical metasurfaces not only inherit their unprecedented flexibility in tailoring light–matter interaction but also the generally fixed response determined by the metaatoms' geometries—an undesirable property that hinders the development of practical metadevices. Consequently, novel optical metasurfaces that can be tuned in an active manner are intensively studied in recent years. Due to their optically thin structures, optical metasurfaces present unique characteristics in the realization of dynamic tuning. In this review, a detailed summary of the recent advances in active optical metasurfaces is provided including discussions reviewing a variety of active materials and approaches that enable faster, stronger, and more accurate tuning. Beyond facilitating practical metadevices, studies of active metasurfaces have, and will continue to deepen the understandings of the interaction between light and nanostructured photonic architectures and to promote the development of nanofabrication techniques involving high‐complexity.

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“…As such, a distinctive reflected color arises, provided the resonance falls into the visible wavelength regime. When the device is immersed in DI water (pH‐neutral) for sufficient time, the top cavity that contains Mg and MgO dissolves as the result of reaction with water, [ 39 ] which exposes the bottom F–P cavity featuring a different hue.…”

Section: Reflective Color Filtersmentioning

confidence: 99%

Transient Structural Colors with Magnesium‐Based Reflective Filters

Lyu

Gong

Dias

et al. 2022

Advanced Optical Materials

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can be induced on resonance, giving rise to the filtering of distinctive colors. Commonly used resonance structures include Fabry-Pérot (F-P) cavities, [6][7][8][9] plasmonic nanostructures, [10][11][12][13][14] and grating-coupled waveguides. [15][16][17] Compared with conventional approaches using organic dyes or chemical pigments, structural color filtering offers compelling advantages, including durability, environmental friendliness, high resolution, and compatible integration with monolithic fabrication. [2,[18][19][20] One fundamental constraint with those resonance structures is that the generated/ filtered colors are static post-fabrication, yet varieties of modern technologies such as cryptography, data storage, and dynamic color display entail on-demand alteration or vanishment of hue. Although mechanisms to dynamically tailor the optical properties in resonance nano structures have been well established via phasechanging materials, [21,22] electrical biasing/ gating, [23][24][25] mechanical actuation or strain, [3,26,27] methods with lower power consumption and better cost-effectiveness are still called for. From material's perspective, structural color filters consist prevalently of conventional metals (e.g., Au, Ag, and Al) owing to their low optical loss. However, they are either nonearth abundant and CMOS-incompatible (Au, Ag) or nonbiodegradable (Ag, Al), which often restricts their utilization in biosensing [28,29] and augmented reality. [30] Recently, magnesium (Mg) has drawn increasing research interest for nanophotonic and plasmonic applications as an earth-abundant, biodegradable, and CMOS-compatible alternative to conventional metals. [31][32][33][34] Besides, its optical property can be readily modified upon exposure to hydrogen or water, prompting its adoption in dynamic photonic devices. [9,35] Here, we experimentally implement an Mg-based colorfiltering multilayer structure based on two metal-insulatormetal (MIM) F-P cavities connected in tandem. Our devices visually exhibit multiple distinctive tints spanning the CMY reflective color gamut, verified by spectroscopic ellipsometry (SE)-measured reflection spectra featuring marked suppression at resonance wavelengths. We also find that the colors are insensitive to incident angles for most devices, which is a conducive characteristic for color display. In addition, we demonstrate that the colors can vanish within ≈40 s after immersion in water. The fast fading of hue is desirable for securing and protecting optical information as needed. Further, extending

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Soft and transient magnesium plasmonics for environmental and biomedical sensing

Cited by 25 publications

References 48 publications

Non-Noble Plasmonic Metal-Based Photocatalysts

Non-Noble Plasmonic Metal-Based Photocatalysts

Recent Progress in Active Optical Metasurfaces

Transient Structural Colors with Magnesium‐Based Reflective Filters

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