Metal nanoparticles-PDMS nanocomposites for tunable optical filters and sensors

Algorri, José Francisco; Poudereux, David; García‐Cámara, Braulio; Urruchi, V.; Sánchez‐Pena, José Manuel; Vergaz, Ricardo; Caño‐García, Manuel; Quintana, Xabier; Geday, Morten Andreas; Otón, J. M.

doi:10.1515/odps-2016-0001

Cited by 15 publications

(6 citation statements)

References 10 publications

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“…Trials to develop optical fibers based on silicate glasses and polymers incorporated either with silver or gold NPs were reported [190][191][192][193], but only third-order experiments were performed using such fibers. However, as shown below, the exploitation of the fifth-order nonlinearity may be helpful for all-optical switching operations.…”

Section: Polarization Instability Due To High-order Nonlinearitiesmentioning

confidence: 99%

High-order optical nonlinearities in plasmonic nanocomposites—a review

2017

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Section: Polarization Instability Due To High-order Nonlinearitiesmentioning

confidence: 99%

High-order optical nonlinearities in plasmonic nanocomposites—a review

2017

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“…GNPs have been extensively exploited as nanoheaters for hyperthermia applications owing to their high photothermal conversion efficiency. [48][49][50] The photo-thermal performance of the GNPs-doped POF was investigated by pumping it with a continuous-wave (CW) laser (λ = 532 nm) (Figure 1f). Substantial heat was released from the GNPs, resulting in rapidly elevated temperature of the fiber (Figure 1g).…”

Section: Resultsmentioning

confidence: 99%

Flexible Plasmonic Optical Tactile Sensor for Health Monitoring and Artificial Haptic Perception

Guo

Shang

Gao

et al. 2023

Adv Materials Technologies

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specialized to respond to various physical stimuli (e.g., temperature, pressure, and stretching), humans can rapidly and accurately locate and identify objects via haptic perception. [5][6][7] To emulate human skin with haptic pressure sensation, tactile sensors capable of measuring contact pressure/force have been extensively exploited with diverse nanomaterials and nanostructures over the past decade. [8][9][10][11][12][13] For example, Gong et al. proposed a flexible and highly sensitive pressure sensor by sandwiching ultrathin gold nanowire between elastomer sheets that allowed real-time monitoring of arterial blood pressure through skin surface contact. [10] Cao et al. demonstrated enhanced tactile sensitivity for surface texture discerning based on an optimized micropyramid structure assembled with a single-walled carbon nanotube. [13] The general principle of such sensors is to transduce the mechanical stimuli into electrical signals through the effects of piezoelectricity, capacitance, or piezoresistance. [14,15] Tactile sensors made of piezoelectric elements have shown advantages such as high sensitivity, low power consumption, and high response frequency, which make them, especially promising for dynamic pressure measurements such as slip and vibration detection in robotics. [15][16][17] However, the piezoelectric effects are generally temperature-dependent, and not suitable for static pressure measurement due to charge leakage. [18,19] Capacitive sensors can monitor both static and dynamic pressure with the merits of temperature independence and long-term stability but suffer from parasitic effects, complex circuits, and limited working range. [20][21][22] By comparison, piezoresistive sensors have been more predominantly used for tactile sensing due to their simple structure, easy readout, and broad sensing range. [23,24] However, they typically exhibit undesirable hysteresis and signal drift, inducing practical difficulties in high-precision measurements. [18] Besides, other issues such as electromagnetic interference (EMI) susceptibility, electrical safety, and biocompatibility of the electronic components in medical settings, are also common concerns of all aforementioned approaches that impair their widespread applications. [25,26] Recently, there have also been efforts in developing tactile sensors by using ion conductors and ionic luminophores that can convert mechanical stimuli into luminescence. [27,28] These sensors provide visual-tactile feedback with spatially-resolved capability, but suffer from long response

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“…In practice, it is difficult to obtain homogeneous samples of dispersed nanoparticles. Common host materials are PDMS [229] or LC [230]. In the case of LC, the most common NP for use with LC are magnetic (Fe x O y ), insulating (ZnO, TiO 2 , Si 3 N 4 ), ferroelectric (e.g., BaTiO 3 ) and metallic (e.g., plasmonic Au or Ag) nanoparticles, as well as semiconductor quantum dots (CdS, CdSe, CdTe) [231].…”

Section: Sensing Applicationsmentioning

confidence: 99%

Infiltrated Photonic Crystal Fibers for Sensing Applications

Algorri

Zografopoulos

Tapetado

et al. 2018

Sensors

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Photonic crystal fibers (PCFs) are a special class of optical fibers with a periodic arrangement of microstructured holes located in the fiber’s cladding. Light confinement is achieved by means of either index-guiding, or the photonic bandgap effect in a low-index core. Ever since PCFs were first demonstrated in 1995, their special characteristics, such as potentially high birefringence, very small or high nonlinearity, low propagation losses, and controllable dispersion parameters, have rendered them unique for many applications, such as sensors, high-power pulse transmission, and biomedical studies. When the holes of PCFs are filled with solids, liquids or gases, unprecedented opportunities for applications emerge. These include, but are not limited in, supercontinuum generation, propulsion of atoms through a hollow fiber core, fiber-loaded Bose–Einstein condensates, as well as enhanced sensing and measurement devices. For this reason, infiltrated PCF have been the focus of intensive research in recent years. In this review, the fundamentals and fabrication of PCF infiltrated with different materials are discussed. In addition, potential applications of infiltrated PCF sensors are reviewed, identifying the challenges and limitations to scale up and commercialize this novel technology.

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Metal nanoparticles-PDMS nanocomposites for tunable optical filters and sensors

Cited by 15 publications

References 10 publications

High-order optical nonlinearities in plasmonic nanocomposites—a review

High-order optical nonlinearities in plasmonic nanocomposites—a review

Flexible Plasmonic Optical Tactile Sensor for Health Monitoring and Artificial Haptic Perception

Infiltrated Photonic Crystal Fibers for Sensing Applications

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