Novel smart window using photonic crystal for energy saving

Zaky, Zaky A.; Aly, Arafa H.

doi:10.1038/s41598-022-14196-9

Cited by 34 publications

(15 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One-dimensional photonic crystal (1DPC) is the simplest photonic crystal structure and is easy to manufacture, which can be used to design absorbers [20][21][22][23], sensors [24][25][26] and so on [27][28][29]. In this paper, we make full use of the local properties of photonic crystals and the excellent optical properties of graphene, and propose a structure based on 1DPC and graphene which can achieve tunable multichannel perfect absorption.…”

Section: Introductionmentioning

confidence: 99%

Tunable bidirectional perfect THz absorber realized by graphene-based one-dimensional photonic crystals

et al. 2023

View full text Add to dashboard Cite

In this paper, a perfect absorption structure of graphene-based one-dimensional photonic crystals (1DPC) with tunable absorption channels and absorptivity is proposed. The proposed structure can achieve four perfect absorption peaks with the absorptivity of 99.31%, 99.88%, 99.74% and 99.32% at the same time, and the absorptivity of all absorption peaks is more than 95%. By tuning the period number of 1DPC, the number of absorption peaks and absorption efficiency can be changed. In addition, we use this structure to design two different bidirectional absorbers. The designed bidirectional absorber can tailor the perfect absorption frequency with the absorptivity of more than 99.51%, and can change the absorption channel from single channel to double channel and double channel to multi-channel under the forward and backward incidence. This work not only fills the gap in the design of bidirectional perfect absorbers for 1DPC, but also provides a scheme for the design of multifunctional devices.

show abstract

Section: Introductionmentioning

confidence: 99%

Tunable bidirectional perfect THz absorber realized by graphene-based one-dimensional photonic crystals

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In order to meet the demands of contemporary zero-energy buildings, there is currently a significant market for smart partition panels that may act as wide-area switchable gates for light transactions with the outside world. − At the moment, the windows and partitions in use are only minimally opaque, and the appropriate level of see-through visibility is only possible with the employment of stationary fixtures like screens, curtains, or combinations of these. However, the degree of window transparency may not always be controllable by the user, and such is the case for opaque glasses.…”

Section: Introductionmentioning

confidence: 99%

Cost-Effective Smart Window: Transparency Modulation via Surface Contact Angle Controlled Mist Formation

Mondal

Awasthi

Ganesha

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Implementing simple and inexpensive energy-saving smart technologies in households is quite effective to accomplish on-demand privacy control and reduction in energy consumption. Conventional smart glasses face difficulty in making inroads into the consumer market due to utilizing expensive active layers, electrolytes, and transparent electrodes. Thus, the need of the hour is to develop an unconventional smart window, which should be cost-effective, power-efficient, and simple to fabricate. Against this backdrop, we report the fabrication of a new class of smart partition windows termed “mist-driven transparency switching glass”. The fabrication protocol includes surface energy modification of two glass panes, followed by assembling them into a square or rectangular-shaped narrow cell with appropriate inlets and outlets for mist. In its pristine state, the device is transparent, as expected of two plain glasses forming a cell. Insertion of cool mist into the device produces tiny droplets onto the inner walls due to condensation enabling scattering of light, thereby producing the translucent state. The optimized device shows a transmittance modulation of as much as ∼65% at 550 nm, allowing it to reduce the indoor temperature by more than 30% compared to a regular glass windowpane. To realize commercial viability, a large area device (30 × 30 cm2) was fabricated, which could be operated wirelessly through a cellphone application paving the way for incorporating the Internet of Things into the technology.

show abstract

“…There remains significant interest in the solution-processed deposition of monolayer films [1,2], including photonic crystal structures for smart sensing [3,4,5,6,7]. The inverse structures that are produced via the directed and templated assembly around such films also exhibit a range of intriguing light-matter interactions [1,3,8,9].…”

Section: Introductionmentioning

confidence: 99%

The poor man’s trough: a bench top, motor-free method to 3D Langmuir-Blodgett films

Weiss

Rodriguez

Feng

et al. 2023

Bioinspiration, Biomimetics, and Bioreplication XIII

View full text Add to dashboard Cite

Langmuir-Blodgett troughs provide an excellent system to deposit monolayer films onto flat and curved substrates. However, most trough designs use motorized barriers to compact the film, and it is difficult to fully eliminate the capillary waves and striations on deposited films caused by motorized barriers. Here, we present an inexpensive design for a benchtop LB trough that compresses the film without motorized barriers; instead, it is the trough's geometry that compresses the film in a drainage basin. We demonstrate this approach with a 3D printed drainage basin and with self-assembled polystyrene colloidal films on a range of 3D glass substrates: a jar, a bulb, and a compressor tube. We provide a mathematical formalism to coat 3D objects with arbitrary size and shape; especially with facile 3D printing, this concept may be extended in a cheap and modular approach.

show abstract

Novel smart window using photonic crystal for energy saving

Cited by 34 publications

References 36 publications

Tunable bidirectional perfect THz absorber realized by graphene-based one-dimensional photonic crystals

Tunable bidirectional perfect THz absorber realized by graphene-based one-dimensional photonic crystals

Cost-Effective Smart Window: Transparency Modulation via Surface Contact Angle Controlled Mist Formation

The poor man’s trough: a bench top, motor-free method to 3D Langmuir-Blodgett films

Contact Info

Product

Resources

About