Plasmonics-enhanced metal–organic framework nanoporous films for highly sensitive near-infrared absorption

Kim, Ki Joong; Chong, Xinyuan; Kreider, Peter B.; Ma, Guoheng; Ohodnicki, Paul R.; Baltrus, John P.; Wang, Alan X.; Chang, Chih-Hung

doi:10.1039/c4tc02846e

Cited by 47 publications

(35 citation statements)

References 52 publications

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“…This indicates the highly oriented growth, having a hexagonal shaped unit cell viewed along the (111) direction [42], compared to that of the polycrystalline bulk Cu-BTC prepared by solvothermal method [the lower curve of Figure 1 (e)]. This might due to the presence of -OH functional groups on the surface of optical fibers after O 2 plasma treatment, leading to preferentially oriented films [43]. MOFs are relatively new materials, and most optical characterizations of MOF are focused in the visible wavelength range.…”

Section: Preparation Of Mof-coated Nir Fiber Optic Sensorsmentioning

confidence: 77%

Ultrashort Near-Infrared Fiber-Optic Sensors for Carbon Dioxide Detection

et al. 2015

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In this paper, we report a fiber-optic carbon dioxide (CO 2 ) near-infrared (IR) absorption sensor with only 8-cm sensing length that is coated with nanoporous metalorganic framework material Cu-BTC (BTC = benzene-1,3, 5-tricarboxylate). The multimode optical fiber was etched by hydrofluoric acid to remove the cladding and part of the core, resulting in larger evanescent field to sense the near-IR absorption induced by the adsorbed CO 2 . The Cu-BTC thin film with 100 nm thickness was then grown onto the ethced core through a stepwise layer-by-layer method. Our real-time measurement results show that the CO 2 detection limit is better than 500 ppm and the overall response time is 40 s for absorption and 75 s for desorption. To the best of our knowledge, this is the shortest near-IR fiber-optic sensor for CO 2 detection at 1.57-µm wavelength.Index Terms-Fiber optic sensor, gas sensor, near infrared absorption, metal-organic framework.

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Section: Preparation Of Mof-coated Nir Fiber Optic Sensorsmentioning

confidence: 77%

Ultrashort Near-Infrared Fiber-Optic Sensors for Carbon Dioxide Detection

et al. 2015

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“…16,[24][25][26][27] Among them, 3D NWs have attracted many interests in the 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 3 area of sensors, 19 drug delivery, 28 and fuel cells, 22 due to their high surface area, low density, and special electrical properties. 19 For the fuel cell application, the 3D NWs materials can serve as catalysts themselves, which shown high activities and satisfactory stability in comparison to commercial carbon supported Pt catalyst.…”

Section: Introductionmentioning

confidence: 99%

Facile One-Step Synthesis of Three-Dimensional Pd–Ag Bimetallic Alloy Networks and Their Electrocatalytic Activity toward Ethanol Oxidation

Zhu

et al. 2015

ACS Appl. Mater. Interfaces

182

105

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The three-dimensional palladium networks and palladium-silver bimetallic alloy networks were synthesized at room temperature on a large scale using a rapid and simple strategy. The results revealed that the morphology of the networks is not affected by the composition. We demonstrated that the as-prepared unsupported networks exhibited excellent electrochemical activity and stability toward ethanol oxidation reaction in alkaline media due to the formation of palladium-silver alloys as well as the porous nanostructures. The results indicate that the well-defined three-dimensional palladium-silver bimetallic alloy networks are promising catalysts for fuel cells.

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“…Leveraging resonant SEIRA in metamaterials, optical interaction length for the same detection resolution can be reduced by 1000 times compared to spiral waveguide and free space nondispersive infrared (NDIR) gas sensor . To further improve the detection limit of metamaterial gas sensors, different enrichment layers, such as graphene, metal‐organic framework (MOF), polyethylenimine (PEI) are used to trap gas molecules into metamaterial hotspots in order to locally enhance near‐field interaction. Combining PEI and metamaterial absorber, Hasan et al presented a hybrid metamaterial absorber for CO 2 sensing and achieved sub‐ppm level resolution .…”

Section: Metamaterials In Chemical Sensing Applicationsmentioning

confidence: 99%

Leveraging of MEMS Technologies for Optical Metamaterials Applications

Ren

Chang

et al. 2019

Advanced Optical Materials

178

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Tunable metamaterial devices have experienced explosive growth in the past decades, driving the traditional electromagnetic (EM) devices to evolve into diversified functionalities by manipulating EM properties such as amplitude, frequency, phase, polarization, and propagation direction. However, one of the bottlenecks of these rapidly developed metamaterials technologies is limited tunability caused by the intrinsic frequency‐dependent property of exotic tunable material. To overcome such limitation, the microelectromechanical system (MEMS) enabling micro/nanoscale manipulation is developed to actively control “meta‐atom” in terahertz and infrared region, which brings frequency‐scalable tunability and complementary metal‐oxide‐semiconductor‐compatible functional meta‐devices. Beyond tunability, novel chemical sensing platforms of molecular identification and dynamic monitoring of the biochemical process can be achieved by integrating micro/nanofluidics channels with metamaterial resonators. Additionally, incorporating metamaterial absorbers with MEMS resonators brings another research interest in MEMS zero‐power devices and radiation sensors. Furthermore, moving from 2D metasurfaces to 3D metamaterials, enhanced EM properties like novel resonance mode, giant chirality, and 3D manipulation reinforce the application in biochemical and physical sensors as well as functional meta‐devices, paving the way to realize multi‐functional sensing and signal processing on a hybrid smart‐sensor microsystem for booming healthcare, environmental monitoring, and the Internet of Things applications.

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Plasmonics-enhanced metal–organic framework nanoporous films for highly sensitive near-infrared absorption

Abstract: Combined plasmonic nanocrystals and metal–organic framework thin-films are fabricated for sensing gases in the near-infrared range.

Cited by 47 publications

References 52 publications

Ultrashort Near-Infrared Fiber-Optic Sensors for Carbon Dioxide Detection

Ultrashort Near-Infrared Fiber-Optic Sensors for Carbon Dioxide Detection

Facile One-Step Synthesis of Three-Dimensional Pd–Ag Bimetallic Alloy Networks and Their Electrocatalytic Activity toward Ethanol Oxidation

Leveraging of MEMS Technologies for Optical Metamaterials Applications

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