An ultrahigh-fidelity 3D holographic display using scattering to homogenize the angular spectrum

Science Advances, Год журнала: 2023, Номер 9(41)

Опубликована: Окт. 12, 2023

A three-dimensional (3D) holographic display (3DHD) can preserve all the volumetric information about an object. However, poor fidelity of 3DHD constrains its applications. Here, we present ultrahigh-fidelity 3D that uses scattering for homogenization angular spectrum. medium randomizes incident photons and homogenizes spectrum distribution. The redistributed field is recorded by a photopolymer film with numerous modulation modes half-wavelength scale pixel size. We have experimentally improved contrast focal spot to 6 × 106 tightened spatial resolution 0.5 micrometers, respectively ~300 4.4 times better than digital approaches. By exploiting multiplexing ability transmission channel selection capability medium, realized dynamic spirals consisting 20 foci across 1 millimeter 26 millimeters uniform intensity.

Язык: Английский

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Unexploited Design and Application of Dynamic Covalent Networks: Phenol-yne Click Reaction and Porous Film Generation

ACS Materials Letters, Год журнала: 2022, Номер 4(11), С. 2090 - 2096

Опубликована: Сен. 26, 2022

Dynamic covalent networks (DCNs) have attracted great attention because of their capacity for reprocessing and remolding, based on macromolecular architecture transformations or rearrangements through dynamic exchange reactions. Here, a new reaction between phenol an enol-one motif yielded from the phenol-yne click is introduced, facilely integrated into fabrication novel DCN. To expand scope material recycling, another degradable DCN prepared using same but with diacetal introduced. After thermal fusion these two DCNs subsequent acidic hydrolysis, porous polymer film porosity 46% afforded, which verified to possess excellent oil absorption recyclability. The strategic design films provide entirely pathway application DCNs.

Язык: Английский

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Effect of Terminal Alkyl Chains for Free Radical Photopolymerization Based on Triphenylamine Oxime Ester Visible‐Light Absorbing Type I Photoinitiators

ChemistrySelect, Год журнала: 2023, Номер 8(30)

Опубликована: Авг. 7, 2023

Abstract In order to investigate the photopolymerization properties of alkyl chain length dependence Type I photoinitiators, in this study, a series visible‐light‐absorbing triphenylamine oxime esters ( Peko‐A ‐ D , and reference TP‐1M ) containing various periphery were synthesized. That is, an alkane segment contains isopropyl for butyl Peko‐B undecane Peko‐C pentadecane Peko‐D methyl respectively. Except all them have good organo‐solubility can dissolve testing monomer (trimethylolpropane triacrylate, TMPTA). All give from near UV visible‐light absorption regions with maximum peaks at around 360 nm show rather red‐shifted compared commercial OXE‐01 compound. Accordingly, photochemical reaction behavior was studied by cyclic voltammograms (CV), electron spin resonance (ESR) steady‐state photolysis. addition, based photoinitiating systems are through photo‐DSC experiment on light exposure wavelengths (UV lamp, LED@365 LED@405 nm). Under different source, penetration affects final double conversion efficiencies. As result, esters‐based formulation shows better efficiencies upon as irradiation source. Finally, new ester system capable applied direct laser write generate 3D patterns using diode @405 nm.

Язык: Английский

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Development of heat-responsive adhesive materials that are stable during use and quickly deteriorate during dismantling

Polymer Journal, Год журнала: 2023, Номер 56(4), С. 223 - 247

Опубликована: Ноя. 22, 2023

Язык: Английский

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Construction of fluorinated hyperbranched polyaryletherketone-based UV-cured films with low dielectric and enhanced mechanical properties

Polymer, Год журнала: 2024, Номер 299, С. 126902 - 126902

Опубликована: Март 22, 2024

Язык: Английский

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