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Polymer-dispersed liquid crystal (PDLC) and polymer-stabilized liquid crystal (PSLC) systems are the two primary distinct systems in the field of liquid crystal (LC) technology, and they are differentiated by their unique microstructures. Here, we present a novel coexistent system of polymer-dispersed and polymer-stabilized liquid crystals (PD&SLCs), which forms a homeotropically aligned polymer network (HAPN) within the LC droplets after a microphase separation between the LC and polymer matrix and combines the advantages of both the PDLC and PSLC systems. Then, we prepare a novel thermally light-transmittance-controllable (TLTC) film from the PD&SLC system, where the transmittance can be reversibly changed through thermal control from a transparent to a light-scattering state. The film also combines the advantageous features of flexibility and a potential for large-scale manufacturing, and it shows significant promise in future applications from smart windows to temperature sensors.
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http://dx.doi.org/10.1021/acsami.6b13366 | DOI Listing |
We present a self-sensing smart window based on thermally passive control of polymer-stabilized cholesteric liquid crystal (PSCLC), whose transmission varies through the smectic A (SmA)-chiral nematic (N*) phase transition. In the temperature range corresponding to the SmA phase, the PSCLC cell exhibit a transparent state. Conversely, the cell in the N* phase adopts a highly hazy appearance caused by the focal conic texture of the cholesteric liquid crystal (LC) molecules.
View Article and Find Full Text PDFACS Appl Mater Interfaces
July 2025
School of Materials Science and Engineering, Peking University, Beijing 100083, China.
The polymer-stabilized liquid crystal (PSLC) dimming film has garnered widespread attention due to its energy-saving features and good electro-optical performance, making it highly suitable for smart windows in automotive and architectural applications. However, its poor mechanical properties severely limit its large-scale flexible film production and wide application due to its internal fine and fragile polymer network. Enhancing the processability and peel strength of PSLC films remains particularly challenging because electro-optical performance degrades rapidly with increasing polymer content.
View Article and Find Full Text PDFAdv Mater
August 2025
State Key Lab of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.
Anode-free sodium metal batteries (AFSMBs) offer a promising solution to enhance the inherently low energy of sodium-ion batteries (SIBs) while circumventing the challenges in processing highly reactive Na metal anodes. However, their practical viability is severely hindered by short lifespan, driven by accelerated irreversible Na loss in zero-Na-excess cell configurations, alongside safety concerns of liquid electrolyte leakage. Here, a design of long-life quasi-solid-state AFSMBs is demonstrated by leveraging polymer regulation of Na solvation behavior and anode interphase chemistry to reduce Na loss while enhancing cell safety.
View Article and Find Full Text PDFNanomicro Lett
April 2025
Institute for Advanced Materials and Technology, University of Science and Technology, Beijing, 100083, People's Republic of China.
The advancement of sophisticated smart windows exhibiting superior thermoregulation capabilities in both solar spectrum and long-wave infrared range maintains a prominent objective for researchers in this field. In this study, a Janus window is proposed and prepared based on polymer-stabilized liquid-crystal films/thermochromic materials. It can achieve switchable front long-wave infrared emissivity (ε) and solar modulation ability (ΔT) through dynamic flipping, making it suitable for different seasonal energy-saving requirements.
View Article and Find Full Text PDFMaterials (Basel)
March 2025
Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China.
Polymer-stabilized liquid crystal (PSLC) dimming film has attracted widespread attention due to its normally transparent state, energy-saving capability, and excellent electro-optical performance, which has promising applications in smart cars and building windows. However, achieving good electro-optical performance and high peel strength simultaneously still remains challenging. In this study, a PSLC film based on monoepoxy and diepoxy monomers was prepared through rapid cationic polymerization, showing low driving voltages and high peel strength simultaneously.
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