Ultra-large optical modulation of electrochromic porous WO film and the local monitoring of redox activity.

Chem Sci

School of Materials Science and Engineering , Nanyang Technological University, 50 Nanyang Avenue , Singapore 639798 , Singapore . Email: ; http://www.ntu.edu.sg/home/pslee/.

Published: February 2016

Porous WO films with ultra-high transmittance modulation were successfully fabricated on different substrates by a novel, facile and economical pulsed electrochemical deposited method with 1.1 s interval time between each pulse. The near ideal optical modulation (97.7% at 633 nm), fast switching speed (6 and 2.7 s), high coloration efficiency (118.3 cm C), and excellent cycling stability are achieved by the porous WO on ITO-coated glass. The outstanding electrochromic performances of the porous WO film were mainly attributed to the porous structure, which facilitates the charge-transfer, promotes the electrolyte infiltration and alleviates the expansion of the WO during H insertion compared to that of the compact structure. In addition, the relationships between the structural and electrochemical activity of the electrochromic WO films were further explored by the scanning electrochemical microscopy. These results testify that the porous structure can promote the infiltration of electrolyte and reduce the diffusion path, which consequently enhance the electrochemical activity.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5975915PMC
http://dx.doi.org/10.1039/c5sc03727aDOI Listing

Publication Analysis

Top Keywords

optical modulation
8
porous film
8
porous structure
8
electrochemical activity
8
porous
6
ultra-large optical
4
modulation electrochromic
4
electrochromic porous
4
film local
4
local monitoring
4

Similar Publications

Broad-temperature optical thermometry necessitates materials with exceptional sensitivity and stability across varied thermal conditions, presenting challenges for conventional systems. Here, we report a lead-free, vacancy-ordered perovskite Cs2TeCl6, that achieves precise temperature sensing through a novel combination of self-trapped excitons (STEs) photoluminescence (PL) lifetime modulation and unprecedented fifth-order phonon anharmonicity. The STEs PL lifetime demonstrates a highly temperature-sensitive response from 200 to 300 K, ideal for low-to-intermediate thermal sensing.

View Article and Find Full Text PDF

A useful valence-alterable optical probe for the prediction of material characteristics based on theoretical calculations.

Phys Chem Chem Phys

September 2020

Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou 730000, China.

The controllable design and precise modulation of the functional properties of materials based on theoretical calculations has always been the goal of materials researchers. Through the comparative analysis of theoretical calculations and experimental phenomena, physical properties, including optical properties, electrical conductivity, and dielectric properties, can be further comprehended. In this work, on the basis of the first-principles calculations of many inorganic compounds, we selected BaSnSiO (BSSO) as the research focus and found that it contained two cationic sites with completely different electronic characteristics.

View Article and Find Full Text PDF

Precise modelling of mitochondrial diseases using optimized mitoBEs.

Nature

January 2025

Changping Laboratory, Beijing, The People's Republic of China.

The development of animal models is crucial for studying and treating mitochondrial diseases. Here we optimized adenine and cytosine deaminases to reduce off-target effects on the transcriptome and the mitochondrial genome, improving the accuracy and efficiency of our newly developed mitochondrial base editors (mitoBEs). Using these upgraded mitoBEs (version 2 (v2)), we targeted 70 mouse mitochondrial DNA mutations analogous to human pathogenic variants, establishing a foundation for mitochondrial disease mouse models.

View Article and Find Full Text PDF

Disrupted microsaccade responses in late-life depression.

Sci Rep

January 2025

Department of Anesthesiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei City, Taiwan.

Late-life depression (LLD) is a psychiatric disorder in older adults, characterized by high prevalence and significant mortality rates. Thus, it is imperative to develop objective and cost-effective methods for detecting LLD. Individuals with depression often exhibit disrupted levels of arousal, and microsaccades, as a type of fixational eye movement that can be measured non-invasively, are known to be modulated by arousal.

View Article and Find Full Text PDF

This paper explores a multi-directional (multiple directional) shearing synchronous polarization phase-shifting interferometer that utilizes a birefringent crystal displacer. This design effectively mitigates nonlinear issues and environmental influences commonly encountered in synchronous phase-shifting interferometry. Additionally, it enables the acquisition of shear wavefront information from multiple directions.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!