Responsive photonic crystal for the sensing of environmental pollutants

Wang, Fengyan; Meng, Zihui; Xue, Fei; Xue, Min; Lu, Wei; Chen, Wei; Wang, Qiuhong; Wang, Yifei

doi:10.1016/j.teac.2014.09.002

Cited by 23 publications

(10 citation statements)

References 59 publications

(59 reference statements)

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“…Compared to the color of most dyes and pigments, which arises due to absorption, structural color is based on diffraction, reflection, and refraction of light. [ 3 ] In the past decades many publications have shown that structural color can be achieved synthetically in so‐called photonic crystals (PCs), which are prominent for various applications ranging from medical diagnostics [ 4 ] and environmental monitoring [ 5 ] over sensor technology in food control [ 6 ] and photovoltaics [ 7 ] to optical fibers [ 8 ] and optoelectronics. [ 9 ] The reason for their popularity is that they can influence the propagation of electromagnetic waves similar to how semiconductors affect the motion of electrons.…”

Section: Introductionmentioning

confidence: 99%

Transfer of 1D Photonic Crystals via Spatially Resolved Hydrophobization

Däntl

Guderley

Szendrei‐Temesi

et al. 2021

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1D photonic crystals (1DPCs) are well known from a variety of applications ranging from medical diagnostics to optical fibers and optoelectronics. However, large-scale application is still limited due to complex fabrication processes and bottlenecks in transferring 1DPCs to arbitrary substrates and pattern creation. These challenges were addressed by demonstrating the transfer of millimeter-to centimeter-scale 1DPC sensors comprised of alternating layers of H 3 Sb 3 P 2 O 14 nanosheets and TiO 2 nanoparticles based on a non-invasive chemical approach. By depositing the 1DPC on a sacrificial layer of lithium tin sulfide nanosheets and hydrophobizing only the 1DPC by intercalation of n-octylamine via the vapor phase the 1DPC can be detached from the substrate by immersing the sample in water. Upon exfoliation of the hydrophilic sacrificial layer, the freestanding 1DPC remains at the water-air interface. In a second step, it can be transferred to arbitrary surfaces such as curved glass. In addition, the transfer of patterned 1DPCs is demonstrated by combining the sacrificial layer approach with area-resolved intercalation and etching. The fact that the sensing capability of the 1DPC is not impaired and can be modified after transfer renders this method a generic platform for the fabrication of photonic devices.

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Section: Introductionmentioning

confidence: 99%

Transfer of 1D Photonic Crystals via Spatially Resolved Hydrophobization

Däntl

Guderley

Szendrei‐Temesi

et al. 2021

Small

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“…By correlating the color shifts to a specific physical (e.g., temperature, strain, electric fields) or chemical stimuli (e.g., organic molecules, metabolites), low cost and simple colourimetric sensors with high sensitivity have been developed . They have been implemented in both point‐of‐care diagnostics and environmental applications, generally targeting label‐free detection and involve the integration of stimuli‐responsive materials. Interestingly, a living biohybrid inverse opal‐structured hydrogel has been recently reported to characterize beating cardiomyocytes, demonstrating their ability to self‐report by translating cellular forces into visual signals .…”

Section: Introductionmentioning

confidence: 99%

3D‐Printed Microrobots with Integrated Structural Color for Identification and Tracking

Koepele

Guix

et al. 2020

Advanced Intelligent Systems

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The implementation of two‐photon polymerization (TPP) in the microrobotics community has permitted the fabrication of complex 3D structures at the microscale, creating novel platforms with potential biomedical applications for minimizing procedure invasiveness and diagnosis accuracy. Although advanced functionalities for manipulation and drug delivery tasks have been explored, one remaining challenge is achieving improved visualization, identification, and accurate closed‐loop control of microscale robots. To enable this, distinguishable identifying and trackable features must be included on the microrobot. Toward this end, the construction of micro‐ and nanoscale patterns using TPP is demonstrated for the first time on microrobot surfaces with the intent of mimicking color‐expressing nanostructures present on beetles or butterflies. The patterns provide identification and tracking targets due to their vivid color expression under visible light. Helical and rectangular microrobots are designed with the topical patterns and further functionalized with magnetic materials to be externally actuated by magnetic fields. Vision‐based tracking of a 20 μm × 30 μm colored feature on a 100 μm‐long helical microrobot using a fixed angular position light source during microrobotic motion is shown. This versatile structural color patterning approach shows great potential for the visual differentiation of various microrobots and tracking for improved closed‐loop control.

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“…Therefore, PC materials can be used for sensing applications (Gu et al, 2000 ; Fenzl et al, 2014 ; Cai et al, 2015b ). A large number of PC-based sensors have been designed to respond to different external stimuli (Ge & Yin, 2011 ), such as mechanical stress (Foulger et al, 2001 ; Sumioka et al, 2002 ), temperature (Espinha et al, 2014 ; Xu et al, 2015 ), electric fields (Haurylau et al, 2006 ; Yuxia et al, 2014 ), magnetic fields (Ge et al, 2007 ; Kim et al, 2013 ) and chemicals (Kim et al, 2014 ; Wang et al, 2014 ; Huang et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Photonic crystal materials and their application in biomedicine

Chen¹,

Chen

Chen³

et al. 2017

Drug Delivery

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Photonic crystal (PC) materials exhibit unique structural colors that originate from their intrinsic photonic band gap. Because of their highly ordered structure and distinct optical characteristics, PC-based biomaterials have advantages in the multiplex detection, biomolecular screening and real-time monitoring of biomolecules. In addition, PCs provide good platforms for drug loading and biomolecule modification, which could be applied to biosensors and biological carriers. A number of methods are now available to fabricate PC materials with variable structure colors, which could be applied in biomedicine. Emphasis is given to the description of various applications of PC materials in biomedicine, including drug delivery, biodetection and tumor screening. We believe that this article will promote greater communication among researchers in the fields of chemistry, material science, biology, medicine and pharmacy.

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Responsive photonic crystal for the sensing of environmental pollutants

Cited by 23 publications

References 59 publications

Transfer of 1D Photonic Crystals via Spatially Resolved Hydrophobization

Transfer of 1D Photonic Crystals via Spatially Resolved Hydrophobization

3D‐Printed Microrobots with Integrated Structural Color for Identification and Tracking

Photonic crystal materials and their application in biomedicine

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