High-efficient smart windows enabled by self-forming fractal networks and electrophoresis of core-shell TiO2@SiO2 particles

Liu, Sai; Zhang, Dongwei; Peng, Haihui; Jiang, Yue; Gao, Jinwei; Zhou, Guofu; Liu, Junming; Kempa, Krzysztof; Gao, Jinwei

doi:10.1016/j.enbuild.2020.110657

Cited by 10 publications

(6 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Inspired by the superior optical transmittance of crack pattern and fractal networks, Liu et al designed a novel category of smart windows based on electrophoresis [ 65 ]. The TiO 2 @SiO 2 particles with core-shell structure are chosen as the electrically responsive medium in this type of smart windows.…”

Section: Driving Modes Of Mechanoresponsive Smart Windowsmentioning

confidence: 99%

“… The strategy of electric driving mode mechanoresponsive smart windows: ( a , b ) controlling of nanoparticles via the electrophoresis to modulate colors and transmittance [ 64 , 65 ] Copyright 2021, American Chemical Society and 2021, Elsevier, ( c ) carbon nanotube-based materials to adjust transmittance [ 66 ] Copyright 2017, Elsevier, ( d ) based on surface wrinkle to modulate transmittance [ 67 ] Copyright 2018, American Chemical Society. …”

Section: Figurementioning

confidence: 99%

See 1 more Smart Citation

Review on Mechanoresponsive Smart Windows: Structures and Driving Modes

et al. 2023

View full text Add to dashboard Cite

The growing awareness about the global energy crisis and extreme weather from global warming drives the development of smart windows market. Compared to conventional electrochromic, photochromic, or thermochromic smart windows, mechanoresponsive smart windows present advantages of simple construction, low cost, and excellent stability. In this review, we summarize recent developments in mechanoresponsive smart windows with a focus on the structures and properties. We outline the categories and discuss the advantages and disadvantages. Especially, we also summarize six unconventional driving modes to generate mechanical strain, including pneumatic, optical, thermal, electric, magnetic, and humidity modes. Lastly, we provide practical recommendations in prospects for future development. This review aims to provide a useful reference for the design of novel mechanoresponsive smart windows and accelerate their practical applications.

show abstract

Section: Driving Modes Of Mechanoresponsive Smart Windowsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Review on Mechanoresponsive Smart Windows: Structures and Driving Modes

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Changes in the optical characteristics of "smart" windows are implemented using systems with suspended particles [4], liquid crystal systems [5], as well as electrochemical electrochromic materials [6]. The latter are industrially used in variable-transparency windows.…”

Section: Deposition Of Ni(oh) 2 -Pva Coatingsmentioning

confidence: 99%

Determination of the effect of exposure conducted in KOH solutions at different temperatures on the properties of electrochromic Ni(OH)2-PVA films

Kotok

Кovalenko

Nafeev

et al. 2021

EEJET

View full text Add to dashboard Cite

To determine the effect of exposure of film composite electrodes based on Ni(OH)2-polyvinyl alcohol to an alkaline solution at high temperatures on the electrochromic and electrochemical characteristics, a series of films was obtained. The films were obtained on a glass substrate coated with fluorine-doped tin oxide. The coating of the substrates was carried out by the cathodic template method under the same conditions. The resulting precipitates were treated by keeping them in an alkali solution at different temperatures: 30, 40, 50, 60, and 70 °C for 8 hours, thereby simulating the operating conditions of an electrochromic device in a hot climate. It was found that the exposure temperature directly affected the electrochemical and electrochromic properties of the treated films. In this case, the cyclic volt-ampere curves showed a decrease in the peak values of the current densities and a lower rate of establishment of characteristics with an increase in the treatment temperature. At a maximum treatment temperature of 70 °C, the properties of the film significantly changed towards deterioration. According to the results of the experiments, three temperature ranges of treatment were identified. The first one was in the range up to 40 °C, in which the films showed significant electrochromic and electrochemical activity after treatment. The second interval was between 40 and 60 °C, in which the coatings showed a reversible deterioration in electrochromic and electrochemical activity. After treatment in the second interval, the films gradually restored their performance during electrochemical cycling. The third interval was from 70 °C and above. The films treated in this temperature range irreversibly lost their electrochemical and electrochromic activity. The study also proposed mechanisms to explain changes in the characteristics of electrodes during treatment, as well as possible ways to combat temperature degradation.

show abstract

“…5,6 A transparent display gives transparent EPD potential applications in smart windows, privacy control, and so on. 6 A typical EPD uses a vertical electric field to drive particles moving upward and downward, parallel to the incident light path. 3 Oppositely, we presented a lateral-driving transparent EPD in our previous study.…”

Section: ■ Introductionmentioning

confidence: 99%

Cation-Modified Poly(vinyl alcohol) Film to Optimize the Bistability of Transparent Electrophoretic Display Based on Charge Adsorption Behavior in Nonpolar Solvent

Li,

Liu,

Fan

et al. 2024

Langmuir

View full text Add to dashboard Cite

Electrophoretic displays (EPDs) utilize the electrophoretic particles in electronic ink (e-ink) to display different color states with bistability. Bistability of EPDs is achieved by placing colloidal particles in a highly viscous solvent to keep the distribution of colloidal particles stable without sustaining the external field, so it only consumes power when updating the image. The feature of low power consumption makes it suitable for applications such as advertising boards, price tags, etc. Apart from these applications, recent research on lateral-driving EPDs extends its applications to smart windows, privacy control, and so on. However, achieving bistability by simply increasing the viscosity of solvent is inefficient in the case of lateral driving operation. Therefore, it is deserving to have intensive study on the mechanism of bistability from other aspects. Herein, we propose a mechanism to investigate the charge adsorption behavior on the electrode to affect the bistability of particles, which is based on the “Stern layer adsorption/desorption” model. Based on the above mechanism, we further fabricated a hexadecyl trimethylammonium bromide (CTAB)/poly(vinyl alcohol) (PVA) composite film on the electrode to improve the bistability of lateral-driving EPD by reducing the diffusion current caused by unabsorbed charges. This developed lateral-driving EPD can significantly improve the bistability, which is enhanced from 40 s to 7 min, an increase by a factor of approximately 10. This work gives a way to consider the bistability of colloidal particles in nonpolar solvent.

show abstract

High-efficient smart windows enabled by self-forming fractal networks and electrophoresis of core-shell TiO2@SiO2 particles

Cited by 10 publications

References 27 publications

Review on Mechanoresponsive Smart Windows: Structures and Driving Modes

Review on Mechanoresponsive Smart Windows: Structures and Driving Modes

Determination of the effect of exposure conducted in KOH solutions at different temperatures on the properties of electrochromic Ni(OH)2-PVA films

Cation-Modified Poly(vinyl alcohol) Film to Optimize the Bistability of Transparent Electrophoretic Display Based on Charge Adsorption Behavior in Nonpolar Solvent

Contact Info

Product

Resources

About