Quantum dot light-emitting diodes (QLEDs) are promising candidates for next-generation displays due to their high color purity and tunable emission wavelengths, but achieving resolution in QLEDs remains a significant challenge. Adopting an alternative subpixel layout with dual-color devices is emerging approach resolution. In this report, we demonstrate all-solution-processed QLED using hole-only injection (HOI) n–p–n intermediate connecting layer. These enable either selective from the...

In 2001, Dozov predicted that twist-bend nematic phase can be spontaneously formed when K33 < 0 and K11/K22 > 2, this has recently been discovered in bimesogens. To verify Dozov's hypothesis, we have measured precisely the temperature dependence of elastic constants CB7CB entire range close to transition by combing Fréedericksz threshold methods for a twist an in-plane switching cells. Anomalous changes K22 are observed across transition. The elasticity estimated via...

Facile alignment control of graphene oxide (GO) particles in aqueous dispersions is a highly useful technique for various potential applications. Aqueous GO were recently reported to have an extremely large Kerr coefficient, which may provide valuable pathway the particles. We investigated electro-optic responses ionic solutes and with varying concentrations. found that addition NaOH actually improved sensitivity dispersion, while other additives resulted desensitization. experimentally...

Triboelectric nanogenerators (TENGs) can be incorporated into modern electronic devices requiring sustainable, renewable, and reliable microscale energy sources. We report the first use of human hair, which is known to a highly triboelectric material, for fabrication biobased TENGs. Ethanolic NaOH was used dissolve two simple techniques, bar- spin-coating methods, were prepare hair-based films on electrode substrates. The dissolved hair paste has somewhat different chemical composition from...

Abstract Fundamental studies of the interaction chiral light with matter are important for development techniques that allow handedness‐selective optical detection organic molecules. One approach to achieve this goal is creation a Fabry–Pérot cavity supports eigenmodes desired electromagnetic handedness. This paper theoretically cavities mirrors comprising 1D photonic crystal slabs made van der Waals As 2 S 3 , material one highest known in‐plane anisotropies. By utilizing anisotropy...

In order to use graphene oxide (GO) dispersions for electro-optical applications, both a high GO concentration and electrical sensitivity are essential; however, these have not been achieved date. Here, we report that by optimizing the mean size of particles approximately 0.5 μm, one can obtain up 2 wt% simultaneously. By reducing GO-particle size, interparticle interaction rotational viscosity be significantly reduced, high-concentration isotropic phase obtained. As result, maximum...

The recent discovery of structural coloration in aqueous graphene-oxide (GO) dispersions has increased the applicability carbon-based two-dimensional materials. However, origin photonic band-gap is still poorly understood, and its practical manipulation an early developmental stage. Here, we demonstrate full-color reflection with first- second-order Bragg reflections a GO dispersion, use two fundamental approaches to manipulate crystals, namely, bottom-up top-down by controlling Debye length...

Standing waves are involved in various fundamental, natural phenomena over a wide range of scales, that is, from electron orbitals to planetary oscillations. Interactions between standing and matter interest. Here we demonstrate spontaneous, nematodynamic nonlinear liquid crystal medium their interactions with director fields. The hold unique features such as diagonal nodal lines, self-adaption broad resonance frequencies step-like increase the wavelength increasing frequency. Furthermore,...

Abstract In this paper, we investigate the V th shift of p-type LTPS TFTs fabricated on a polyimide (PI) and glass substrate considering charging phenomena. The with PI positively after bias temperature stress test. However, rarely changed even increasing stress. Such positive results from negative fluorine stemmed under gate bias. fact, C–V characterization metal–insulator-metal capacitor reveals that at SiO 2 /PI interface depends applied material, which agrees well TCAD simulation SIMS...

Liquid-solid contact electrification is a useful mechanism to harvest wasted micromechanical energy. In this study, we investigate how the surface properties of solid substrate affect efficiency. Substrate surfaces were modified from hydrophilic hydrophobic by changing density self-assembled monolayers (SAMs) on SiO2 surface. A with partially-covered SAM exhibited superior performance. The enough induce quick dewetting water and sufficiently electronegative high charge results aliphatic tail...