联系我们  |  网站地图  |  English   |  移动版  |  中国科学院 |ARP
站内搜索:
首页 简介 管理部门 科研部门 支撑部门 研究队伍 科研成果 成果转化 研究生教育 党建与创新文化 科普 信息公开 办公内网
科技信息
Researchers produce firs...
钙钛矿微型激光器研究进展
无溶剂石墨烯重防腐涂料研...
综述:甲醇制烯烃反应中SA...
New study on graphene-wr...
Self-healing catalysts m...
锂金属负极稳定技术解析
南开大学参与新材料和可穿...
超灵敏脉搏传感器问世 提...
Copper catalyst yields h...
New approach boosts perf...
高电流密度下可充放电式锌...
中科院福建物构所提升锂硫...
新型超纯绿光LED 极大提升...
Breakthrough in magnesiu...
现在位置:首页>新闻动态>科技信息
Nanoscale printing breakthrough creates two colours per pixel
2017-09-21 09:56:35 | 编辑: | 【 【打印】【关闭】

 

  Scientists have developed a new form of high-resolution 'printing' which could have wide-ranging applications in data storage, anti-counterfeiting measures, and digital imaging.

  New research from the University of Glasgow, published today in the journal Advanced Functional Materials, outlines how engineers have developed nano-scale plasmonic colour filters that display different colours depending on the orientation of the light which hits it.

  Essentially, this new technique allows the 'printing' of two entirely different, but exceptionally detailed, full-colour images within the same surface area – something which has never been done before using 'structural colour' techniques.

  Instead of relying on dyes and pigments, as in traditional printing, structural colour uses specially structured nanomaterials to render colours. The nanomaterials allow for much higher-resolution prints which do not fade over time. A typical printed image in a magazine, for example, might consist of around 300 coloured dots per inch of page, or 300 DPI. A page 'printed' with structural colour techniques, however, could reach a resolution of 100,000 DPI or more.

  The University of Glasgow team's breakthrough comes from including an additional nanoscale element in the structural colour process, created at the University's James Watt Nanofabrication Centre.

  Biomedical engineering lecturer Dr Alasdair Clark is the lead author of the research paper. Dr Clark said: "We've discovered that if we make colour pixels from tiny cross-shaped indents on a strip of aluminium film, the colour they display becomes polarisation-dependent, allowing us to encode two colours into a single pixel, and then select which colour is displayed by shining different polarisations of light at the surface.

  "By changing the size and shape of the nanoscale indent, we can create a wide range of different colours at very high resolutions."

  The team, from the University's School of Engineering, have demonstrated their technique with several examples, including a nanoscale image which shows the University's crest when the light reaches it in one orientation, and an image of the famous University tower when the orientation of the light is reversed.

  Dr Clark added: "There are a lot of potential applications for our plasmonic colour technology, which we're really excited about.

  "It's ideal for long-term data archival due to its ultra-high resolution, and because the colours won't fade even when exposed long-term to the harshest sunlight. We've worked out that we could store 1.46 Gb per square centimetre, so a single A4 sheet could hold more than 900 Gb of data.

  "Secondly, the process to produce the plasmonic colours is difficult to replicate without access to dedicated facilities, so it could be ideal for creating a new kind of anti-counterfeiting material for banknotes.

  "Lastly, it offers the possibility of developing new types of colour filters for digital photography."

  The paper, titled "Plasmonic color filters as dual-state nano-pixels for high density micro-image encoding," is published in Advanced Functional Materials.

  Explore further: Fireworks on a pinhead as electrons enable colours in 100 000 pixels per inch 

  More information: Esmaeil Heydari et al. Plasmonic Color Filters as Dual-State Nanopixels for High-Density Microimage Encoding, Advanced Functional Materials (2017). DOI: 10.1002/adfm.201701866   

  Journal reference: Advanced Functional Materials 

版权所有 中国科学院上海硅酸盐研究所 沪ICP备05005480号
长宁园区地址:上海市长宁区定西路1295号 电话:86-21-52412990 传真:86-21-52413903 邮编:200050
嘉定园区地址:上海市嘉定区和硕路585号  电话:86-21-69906002 传真:86-21-69906700 邮编:201899