Nanoislands as plasmonic materials

Chung, Taerin; Lee, Youngseop; Ahn, Myeong‐Su; Lee, Wonkyoung; Bae, Sunghan; Hwang, Charles Soon Hong; Jeong, Ki‐Hun

doi:10.1039/c8nr10539a

Cited by 42 publications

(27 citation statements)

References 107 publications

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“…Plasmonic nanoparticles (NPs) such as gold and silver NPs, have unprecedented ability to localize and enhance their surrounding electric eld and conne it into subwavelength volumes due to the excitation of their surface plasmon resonance (SPR) by the incident electromagnetic eld, leading to several applications from structural color printing, 8,9 energy storage, 10 and catalysis [11][12][13][14] to metal NPs-based biosensors [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] development. More recently, these localised SPR effects have been exploited to enhance the optoelectronic properties of functional materials, such as uorophores and photosensitizers, leading to a new eld of studying metal-enhanced uorescence (MEF) [30][31][32][33][34][35][36][37][38][39][40][41] and singlet oxygen generation (ME-SOG). [42][43][44][45][46][47][48] To date, several works have been reported to tune the distance between the uorophore and the metallic surface in controlling the plasmonic-enhancement effects.…”

Section: Introductionmentioning

confidence: 99%

Metal-enhancement study of dual functional photosensitizers with aggregation-induced emission and singlet oxygen generation

Yaraki

Rezaei

et al. 2020

Nanoscale Adv.

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Section: Introductionmentioning

confidence: 99%

Metal-enhancement study of dual functional photosensitizers with aggregation-induced emission and singlet oxygen generation

Yaraki

Rezaei

et al. 2020

Nanoscale Adv.

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“…The sensor was fabricated using a composite of tungsten sulphide nanorod array on titanium mesh with DNA functionalised AuNPs (size = 18 ± 1 nm) as a sensor platform and a multiplexed signal amplifier in the form of a nanohybrid of AgNPs (lattice spacing = 0.27 nm) and zinc metal-organic framework nanozyme. Other geometries that have been widely explored in recent years for developing LSPR sensors include nanopyramids [95,104,105], nanourchins [106][107][108][109], nanocups [92,[110][111][112][113], nanoholes [114][115][116][117] and nanoislands [118][119][120][121][122].…”

Section: Localised Surface Plasmon Resonance Sensors For Biomedical Dmentioning

confidence: 99%

Recent Progress in Optical Sensors for Biomedical Diagnostics

Pirzada

Altıntaş

2020

Micromachines

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In recent years, several types of optical sensors have been probed for their aptitude in healthcare biosensing, making their applications in biomedical diagnostics a rapidly evolving subject. Optical sensors show versatility amongst different receptor types and even permit the integration of different detection mechanisms. Such conjugated sensing platforms facilitate the exploitation of their neoteric synergistic characteristics for sensor fabrication. This paper covers nearly 250 research articles since 2016 representing the emerging interest in rapid, reproducible and ultrasensitive assays in clinical analysis. Therefore, we present an elaborate review of biomedical diagnostics with the help of optical sensors working on varied principles such as surface plasmon resonance, localised surface plasmon resonance, evanescent wave fluorescence, bioluminescence and several others. These sensors are capable of investigating toxins, proteins, pathogens, disease biomarkers and whole cells in varied sensing media ranging from water to buffer to more complex environments such as serum, blood or urine. Hence, the recent trends discussed in this review hold enormous potential for the widespread use of optical sensors in early-stage disease prediction and point-of-care testing devices.

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“…To overcome these limitations, tuning techniques for changing the geometric parameters of photonic nanostructures have been studied. Fabricating photonic nanostructures on stretchable substrates is the main method to tune their optical properties by changing their geometric parameters through the use of different actuation mechanisms [ 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Micro-Actuated Tunable Hierarchical Silver Nanostructures to Measure Tensile Force for Biomedical Wearable Sensing Applications

et al. 2021

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Commercially available biomedical wearable sensors to measure tensile force/strain still struggle with miniaturization in terms of weight, size, and conformability. Flexible and epidermal electronic devices have been utilized in these applications to overcome these issues. However, current sensors still require a power supply and some form of powered data transfer, which present challenges to miniaturization and to applications. Here, we report on the development of flexible, passive (thus zero power consumption), and biocompatible nanostructured photonic devices that can measure tensile strain in real time by providing an optical readout instead of an electronic readout. Hierarchical silver (Ag) nanostructures in various thicknesses of 20–60 nm were fabricated and embedded on a stretchable substrate using e-beam lithography and a low-temperature dewetting process. The hierarchical Ag nanostructures offer more design flexibility through a two-level design approach. A tensional force applied in one lateral (x- or y-) direction of the stretchable substrate causes a Poisson contraction in the other, and as a result, a shift in the reflected light of the nanostructures. A clear blue shift of more than 100 nm in peak reflectance in the visible spectrum was observed in the reflected color, making the devices applicable in a variety of biomedical photonic sensing applications.

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Nanoislands as plasmonic materials

Abstract: Metal nanoislands as plasmonic materials on various substrates have been widely applied for various applications from biosensing to photonic applications.

Cited by 42 publications

References 107 publications

Metal-enhancement study of dual functional photosensitizers with aggregation-induced emission and singlet oxygen generation

Metal-enhancement study of dual functional photosensitizers with aggregation-induced emission and singlet oxygen generation

Recent Progress in Optical Sensors for Biomedical Diagnostics

Micro-Actuated Tunable Hierarchical Silver Nanostructures to Measure Tensile Force for Biomedical Wearable Sensing Applications

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