概括
使用拓保护状态的结构颜色比传统颜料提供更高的亮度和纯度. 这种新方法实现了广泛的颜色范围,为先进的显示技术铺平了道路.
科学领域:
- 纳米光子学 纳米光子学
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 传统的染料和颜料在颜色纯度和亮度方面面临限制.
- 现有的基于光学干扰或纳米光子共振的结构色彩方法在损失和侧带方面扎.
- 实现高性能,持久的结构色彩需要克服这些局限性.
研究的目的:
- 探索拓保护状态颜色 (TPSCs) 作为一种高亮度传导性结构颜色的新方法.
- 为了证明TPSCs在实现广泛的颜色范围和高纯度方面的潜力.
- 用层层的薄膜来实验验证TPSC的设计.
主要方法:
- 利用在不同Zak相的层次薄膜的接口处存在的拓状态的概念.
- 使用设计参数在带间隙内调整TPSC的共振线宽 (FWHM).
- 在玻璃基板上通过喷雾制造TiO2/SiO2层层的薄膜.
主要成果:
- 证明TPSC具有低损耗特性,非常适合用于高亮度传导色彩.
- 通过调整TPSC共振线宽 (到~12 nm FWHM) 实现了156%的sRGB模拟色域.
- 实验实现的TPSC具有~20 nm FWHM和超过94.5%的传输.
结论:
- 在传递性结构色彩中,TPSC在实现卓越的亮度和纯度方面非常有希望.
- 展示的TPSC设计能够实现广泛的颜色范围和高光学性能.
- 在层层的薄膜中与活性材料的整合有可能在大规模,高性能结构色彩应用中取得进一步的进步.
相关概念视频
01:32UV–Vis Spectroscopy of Conjugated Systems
Organic compounds with conjugated double bonds show strong absorption features in the UV–visible region of the electromagnetic spectrum attributed to π → π* electronic excitations. Generally, a UV–vis absorption spectrum is recorded as a plot of absorbance vs wavelength. The wavelength of maximum absorbance, which manifests as a peak in the absorption spectrum, is denoted as λmax.
One of the factors influencing λmax is the extent of conjugation in the...
One of the factors influencing λmax is the extent of conjugation in the...
01:26Phase Contrast and Differential Interference Contrast Microscopy
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
01:03Fixation and Sectioning
Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
01:19Pigmentation
The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
01:22Photoreceptors and Visual Pathways
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
01:24Color Vision
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.