Chromogenic smart windows are one of the key components in improving the building energy efficiency. By simulation of the three-dimensional network of polymer hydrogels, thermal-responsive phase change materials (TRPCMs) are manufactured for energy-saving windows.
Vanadium dioxide (VO2) stands out as a versatile thermochromic material for smart windows owing to its reversible metal-to-insulator transition (MIT) alongside correlated structural and optical properties. In this review, we delve into recent advancements in the phase-change VO2-based...
New research introduces adaptable smart window design that can heat or cool a house.The paper, Reconfigurable Low-Emissivity Optical Coating Using Ultrathin Phase Change Materials, (DOI: 10.1021/acsphotonics.1c01128) was published in ACS Photonics on Dec. 17, 2021.

We propose device architectures to realize such operations using phase-change materials and liquid crystals.Legendre, J. and Papadakis, G. () Energy-efficient thermally smart windows with tunable properties across the near- and mid-infrared ranges.
Materials for thermochromic windows should have a high visible light transmission rate in the tinted state. In addition, the phase change temperature of thermochromic materials for windows does not have to be controlled near room temperature.

Furthermore, visual representations like the one above help us fully grasp the concept of Smart Windows With Phase Change Materials.
Thermochromic material vanadium dioxide (VO 2) has been extensively studied as a smart window material, which could change its optical properties with temperature due to its phase transition.