Color and Texture Morphing with Colloids on Multilayered Surfaces

Chen, Ziguang; Li, Shumin; Arkebauer, Andrew; Gogos, George; Tan, Li

doi:10.1021/am5087215

Cited by 9 publications

(10 citation statements)

References 37 publications

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“…This is illustrated in Fig. 2b, where a digital projector and optical microscope were used to illuminate the hydrogel with a variety of structures36. Furthermore, the method affords a convenient technique for producing customized microphone arrays (acoustic emitters) with tailored reception (emission) patterns suitable, for example, for synthetic aperture array SONAR or ultrasound3738 or for producing structured acoustic beams.…”

Section: Resultsmentioning

confidence: 99%

Hydrogel microphones for stealthy underwater listening

et al. 2016

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Exploring the abundant resources in the ocean requires underwater acoustic detectors with a high-sensitivity reception of low-frequency sound from greater distances and zero reflections. Here we address both challenges by integrating an easily deformable network of metal nanoparticles in a hydrogel matrix for use as a cavity-free microphone. Since metal nanoparticles can be densely implanted as inclusions, and can even be arranged in coherent arrays, this microphone can detect static loads and air breezes from different angles, as well as underwater acoustic signals from 20 Hz to 3 kHz at amplitudes as low as 4 Pa. Unlike dielectric capacitors or cavity-based microphones that respond to stimuli by deforming the device in thickness directions, this hydrogel device responds with a transient modulation of electric double layers, resulting in an extraordinary sensitivity (217 nF kPa−1 or 24 μC N−1 at a bias of 1.0 V) without using any signal amplification tools.

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Section: Resultsmentioning

confidence: 99%

Hydrogel microphones for stealthy underwater listening

et al. 2016

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“…Moreover, a microstructure with high density and without secondary phase is crucial in preventing the growth of Li dendrites in LIBs. [42][43][44] The influence of doping multi-ions (Ga, Ba, and Ta) on the morphology of doped The increase in total conductivity with increase multi-ion doping in the garnet framework can be well explained by the dense microstructure, decreased 96hLi2/24dLi1 ratio, and reduced oxygen occupancy in the multi-doped LLZO samples (Fig. 5).…”

Section: Resultsmentioning

confidence: 99%

“…This result corroborated the high density of the ternary-doped LGLBZTO, which was close to the theoretical density. The fabrication of differently sized grains by mixing large particles with small particles resulted in the dense microstructure 43. Almost no porosity was detected for the dualdoped LLBZTO and ternary-doped LGLBZTO.…”

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confidence: 99%

An efficient multi-doping strategy to enhance Li-ion conductivity in the garnet-type solid electrolyte Li₇La₃Zr₂O₁₂

et al. 2019

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An efficient multi-doping strategy to enhance Li-ion conductivity in the garnet-An efficient multi-doping strategy to enhance Li-ion conductivity in the garnettype solid electrolyte Li7La3Zr2O12 type solid electrolyte Li7La3Zr2O12 Abstract Abstract Lithium-ion (Li + ) batteries suffer from problems caused by the chemical instability of their organic electrolytes. Solid-state electrolytes that exhibit high ionic conductivities and are stable to lithium metal are potential replacements for flammable organic electrolytes. Garnet-type Li 7 La 3 Zr 2 O 12 is a promising solid-state electrolyte for next-generation solid-state Li batteries. In this study, we prepared mono-, dual-, and ternary-doped lithium (Li) garnets by doping tantalum (Ta), tantalum-barium (Ta-Ba), and tantalum-barium-gallium (Ta-Ba-Ga) ions, along with an undoped Li 7 La 3 Zr 2 O 12 (LLZO) cubic garnet electrolyte, using a conventional solid-state reaction method. The effect of multi-ion doping on the Li + dynamics in the garnet-type LLZO was studied by combining joint Rietveld refinement against X-ray diffraction and high-resolution neutron powder diffraction analyses with the results of Raman spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and multinuclear magic angle spinning nuclear magnetic resonance. Our results revealed that Li + occupancy in the tetrahedrally coordinated site (24d) increased with increased multi-ion doping in LLZO, whereas Li + occupancy in the octahedrally coordinated site (96h) remained constant. Among the investigated compounds, the ternary-doped garnet structure Li 6.65 Ga 0.05 La 2.95 Ba 0.05 Zr 1.75 Ta 0.25 O 12 (LGLBZTO) exhibited the highest total ionic conductivity of 0.72 and 1.24 mS cm -1 at room temperature and 60 °C, respectively. Overall, our findings revealed that the dense microstructure and increased Li + occupancy in the tetrahedral-24d Li1 site played a key role in achieving the maximum room-temperature Li-ion conductivity in the ternary-doped LGLBZTO garnet, and that the prepared ternary-doped LGLBZTO was a potential solid electrolyte for Li-ion batteries without polymer adhesion. Disciplines DisciplinesEngineering | Physical Sciences and Mathematics ABSTRACT Lithium-ion (Li + ) batteries suffer from problems caused by the chemical instability of their organic electrolyte. Solid-state electrolytes that exhibit high ionic conductivities and stable to lithium metal are potential replacements for flammable organic electrolytes.Garnet-type Li7La3Zr2O12 is a promising solid-state electrolyte for next-generation solidstate Li batteries. In this study, we prepared mono-, dual-, and ternary-doped lithium (Li)

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“…This range corresponds to samples tested without applying external pressure, excluding porous LLZO interfaces. 7,8 Unfortunately, these values are still too low for battery applications.…”

Section: Introductionmentioning

confidence: 99%

The natural critical current density limit for Li₇La₃Zr₂O₁₂ garnets

et al. 2020

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Ceramic batteries equipped with Li-metal anodes are expected to double the energy density of conventional Li-ion batteries. Besides high energy densities, also high power is needed when batteries have to be developed for electric vehicles. Practically speaking, so-called critical current densities (CCD) higher than 3 mA cm À2 are needed to realize such systems. As yet, this value has, however, not been achieved for garnet-type Li 7 La 3 Zr 2 O 12 (LLZO) being one of the most promising ceramic electrolytes.Most likely, CCD values are influenced by the area specific resistance (ASR) governing ionic transport across the Li|electrolyte interface. Here, single crystals of LLZO with adjusted ASR are used to quantify this relationship in a systematic manner. It turned out that CCD values exponentially decrease with increasing ASR. The highest obtained CCD value was as high as 280 mA cm À2 . This value should be regarded as the room-temperature limit for LLZO when no external pressure is applied. Concluding, for polycrystalline samples either stack pressure or a significant increase of the interfacial area is needed to reach current densities equal or higher than the above-mentioned target value.

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Color and Texture Morphing with Colloids on Multilayered Surfaces

Cited by 9 publications

References 37 publications

Hydrogel microphones for stealthy underwater listening

Hydrogel microphones for stealthy underwater listening

An efficient multi-doping strategy to enhance Li-ion conductivity in the garnet-type solid electrolyte Li₇La₃Zr₂O₁₂

The natural critical current density limit for Li₇La₃Zr₂O₁₂ garnets

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Color and Texture Morphing with Colloids on Multilayered Surfaces

Cited by 9 publications

References 37 publications

Hydrogel microphones for stealthy underwater listening

Hydrogel microphones for stealthy underwater listening

An efficient multi-doping strategy to enhance Li-ion conductivity in the garnet-type solid electrolyte Li7La3Zr2O12

The natural critical current density limit for Li7La3Zr2O12 garnets

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An efficient multi-doping strategy to enhance Li-ion conductivity in the garnet-type solid electrolyte Li₇La₃Zr₂O₁₂

The natural critical current density limit for Li₇La₃Zr₂O₁₂ garnets