A Bioinspired, Reusable, Paper‐Based System for High‐Performance Large‐Scale Evaporation

Liu, Yanming; Yu, Sheng‐Tao; Feng, Rui; Bernard, A.; Liu, Yang; Zhang, Yao; Duan, Haoze; Shang, Wen; Tao, Peng; Song, Chengyi; Deng, Tao

doi:10.1002/adma.201500135

Cited by 729 publications

(537 citation statements)

References 45 publications

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“…Second, we proved in our previous work that a 3D hierarchical configuration is important to increasing the scattering cross-section, which enhances the multi-scattering of incident light and increases light absorption, finally contributing to a high SPR enhancement. 41 Therefore, the 3D bicontinuous interconnected helices will increase the scattering cross-section of incidence light, which further increases the SPR enhancement. Although reducing the channel width by continuously depositing Au will surely lead to a decrease in the scattering cross-section, a competition exists between the nanogap density and the scattering cross-section upon increasing the VF.…”

Section: Surface-enhanced Raman Spectroscopy L Wu Et Almentioning

confidence: 99%

Highly sensitive, reproducible and uniform SERS substrates with a high density of three-dimensionally distributed hotspots: gyroid-structured Au periodic metallic materials

Wang

Zhang

et al. 2018

NPG Asia Mater

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Surface-enhanced Raman spectroscopy (SERS) is an important tool for the analytical, trace detection of many inorganic and organic materials, especially for materials involved in medical care, food safety and environmental pollution. Numerous efforts have been dedicated to exploring periodic metallic materials with a high density of hotspots. However, for most periodic metallic materials fabricated by top-down and bottom-up approaches, the distribution of hotspots is restricted to one or two dimensions. Here, for the first time, we report the successful fabrication of a bio-inspired bicontinuous gyroid-structured Au SERS substrate with a high density of three-dimensionally (3D) distributed hotspots. The as-required gyroid-structured substrates were demonstrated to be highly sensitive, reproducible and uniform, with an enhancement factor of up to 10 9 . Finite-difference time domain (FDTD) simulations were conducted to reveal the mechanism leading to the high enhancement and we found that the interconnected helices in the gyroid structure not only increase the hotspot density but also contribute to increasing the scattering cross-section of the incident laser. The substrate was then adopted for the SERS detection of bis(2-ethylhexyl) phthalate, the most frequently used plasticizer in food, paints, house-hold items, perfumes and so on, and reached a detection limit of 1 fM, which is among the best results ever reported. Moreover, the mechanism deduced here will provide insight into the future design and selection of novel surface plasmonic resonance substrates, as many other bicontinuous interconnected systems are available. NPG Asia Materials (2018) 10, e462; doi:10.1038/am.2017.230; published online 12 January 2018 INTRODUCTIONThe fabrication of surface plasmonic resonance (SPR) materials with ultra-high plasmonic enhancement has long been a critical research area due to their broad applications as chemical sensors, biological sensors, plasmonic solar cells, photocatalysts and other environmentally friendly devices. 1-3 Among these applications, the most famous is the surface-enhanced Raman spectroscopy (SERS) detection of trace analytes, especially for analytes involved in medical care, food safety and environmental pollution. Various nanoparticle systems with novel nanomorphologies and their assemblies have been fabricated and reported to show excellent SPR performance. 2-5 However, SERS nanostructures composed of nanoparticles face significant challenges in achieving a reproducible and uniform Raman response due to the difficulty in fabricating uniform SERS active sites. Periodic metallic materials could provide hotspots with high density, reproducibility and uniformity, which completely meet the requirement of valid SERS substrates, and therefore numerous efforts have been dedicated to engineering periodic metallic materials with novel nanomorphologies,

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Section: Surface-enhanced Raman Spectroscopy L Wu Et Almentioning

confidence: 99%

Highly sensitive, reproducible and uniform SERS substrates with a high density of three-dimensionally distributed hotspots: gyroid-structured Au periodic metallic materials

Wang

Zhang

et al. 2018

NPG Asia Mater

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“…[8][9][10][11][12] Plasmonic nanoparticles with absorption and scattering cross-sections exceeding their geometrical cross-sections have been recently developed and applied for direct solar steam generation [13][14][15][16][17][18][19][20][21][22][23][24] , but they typically require optical concentration of 10-1000x for steam generation. However, optical concentrators are expensive ($200/m 2 ) 25 , often accounting for a major portion of the capital cost of solar thermal systems.…”

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confidence: 99%

Steam generation under one sun enabled by a floating structure with thermal concentration

et al. 2016

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Abstract:Harvesting solar energy as heat has many applications, such as power generation, residential water heating, desalination, distillation and wastewater treatment. However, the solar flux is diffuse, and often requires optical concentration, a costly component, to generate high temperatures needed for some of these applications. Here we demonstrate a floating solar receiver capable of generating 100°C steam under ambient air conditions without optical concentration. The high temperatures are achieved by using thermal concentration and heat localization, which reduce the convective, conductive, and radiative heat losses. This demonstration of a low-cost and scalable solar vapor generator holds the promise of significantly expanding the application domain and reducing the cost of solar thermal systems. Keywords: solar thermal, steam generation, thermal concentration, water treatmentThe sun is a promising and abundant source of renewable energy that can potentially solve many of society's challenges. Solar thermal technologies, i.e., the conversion of the sunlight to thermal energy, are being developed for many applications such as power generation, domestic water heating, desalination, and other industrial processes. [1][2][3][4][5][6][7] Steam and vapor generation is often desired in these applications, but the dilute solar flux (1000 W/m 2 ) does not provide enough power per unit area of the absorber to reach the required high temperatures and to compensate for the large latent heat of water vaporization. Optical

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“…In recent years, interfacial solar steam/vapor generation is attracting a lot of attention for achieving high energy transfer efficiency. And various optical and thermal designs at the solar absorber–water interface for potential applications in water purification,10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 seawater desalination,24, 25, 26, 27 and power generation28, 29 appear.…”

mentioning

confidence: 99%

“…On the basis of global water cycle, moderate global temperature, humidity, and precipitation may be attainable through the tunable plant transpiration. Moreover, photothermal conversion shows the potential as the regulator of the nature, besides the emerging applications, such as radiative cooling,42, 43, 44, 45 thermophotovoltaics,46, 47, 48, 49 water purification,10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 seawater desalination,24, 25, 26, 27 and power generation 28, 29…”

mentioning

confidence: 99%

Tuning Transpiration by Interfacial Solar Absorber‐Leaf Engineering

Zhuang

Lin

et al. 2017

Advanced Science

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Plant transpiration, a process of water movement through a plant and its evaporation from aerial parts especially leaves, consumes a large component of the total continental precipitation (≈48%) and significantly influences global water distribution and climate. To date, various chemical and/or biological explorations have been made to tune the transpiration but with uncertain environmental risks. In recent years, interfacial solar steam/vapor generation is attracting a lot of attention for achieving high energy transfer efficiency. Various optical and thermal designs at the solar absorber–water interface for potential applications in water purification, seawater desalination, and power generation appear. In this work, the concept of interfacial solar vapor generation is extended to tunable plant transpiration by showing for the first time that the transpiration efficiency can also be enhanced or suppressed through engineering the solar absorber–leaf interface. By tuning the solar absorption of membrane in direct touch with green leaf, surface temperature of green leaf will change accordingly because of photothermal effect, thus the transpiration efficiency as well as temperature and relative humidity in the surrounding environment will be tuned. This tunable transpiration by interfacial absorber‐leaf engineering can open an alternative avenue to regulate local atmospheric temperature, humidity, and eventually hydrologic cycle.

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A Bioinspired, Reusable, Paper‐Based System for High‐Performance Large‐Scale Evaporation

Cited by 729 publications

References 45 publications

Highly sensitive, reproducible and uniform SERS substrates with a high density of three-dimensionally distributed hotspots: gyroid-structured Au periodic metallic materials

Highly sensitive, reproducible and uniform SERS substrates with a high density of three-dimensionally distributed hotspots: gyroid-structured Au periodic metallic materials

Steam generation under one sun enabled by a floating structure with thermal concentration

Tuning Transpiration by Interfacial Solar Absorber‐Leaf Engineering

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