Simultaneously enhancing up-conversion fluorescence and red-shifting down-conversion luminescence of

来源 :中国微米纳米技术学会纳米科学技术分会第三届年会暨2014全国纳米生物与医学学术会议 | 被引量 : 0次 | 上传用户:qq12433184000
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Fluorescent carbon dots(CDs)have attracted great attention in biomedical field owing to the remarkable fluorescence property,low toxicity,and excellent water solubility.Because of the “water window” effect,the CDs with upconversion fluorescence or longer wavelength downconversion fluorescence are particularly more suitable for bioimaging because they can weaken the auto-fluorescence interferences and penetrate the cell or tissue more deeply.In this study,we reported a facile method to simultaneously enhance the upconversion fluorescence and tune the downconversion luminescence of CDs from blue to green light by simply adding H2O2 in a hydrothermal process.
其他文献
Aiming to achive the high RF performace AlGaN/GaN HEMT by suppress current collapse and decresing the parasitlic parameters,high density SiN film was deposited by using ICP-CVD on the surface of AlGaN
分解机模型已经被成功应用于上下文推荐系统中。在分解机模型的学习算法中,交替最小二乘法是一种固定其他参数只求单一参数最优值的学习算法,其参数数目影响计算复杂度。然而当特征数目很大时,参数数目随着特征数目幂次方增加,导致计算复杂度很高;即使有些参数已经达到了最优值,每次迭代仍更新所有的参数。本文主要改进了交替最小二乘法的参数更新策略,为参数引入自适应误差指标,通过权重和参数绝对误差共同决定该参数更新与
会议
当前在互联网中存在大量无标记的图像难以进行搜索和分析。传统的图像分类识别方法识别效果较差,特别是在复杂环境下对自然图像的分类识别,图像分类识别技术亟需新的突破。本文通过分析在MNIST数据库和CIFAR-10数据库的分类结果,研究影响卷积神经网络的性能的因素;并基于LeNet-5框架设计一个改进的深度卷积网络,在Tiny ImageNet数据库上达到很好的分类效果,准确率提高了10%左右。
会议
个人云存储服务利用云计算数据中心的资源构建分布式存储系统向用户提供便捷的数据访问服务。合理有效的资源分配不仅能够保证服务性能同时也能为云存储服务商降低资源使用成本。目前资源分配研究主要面向多层应用,应用各层之间的执行逻辑为顺序关系,而云存储系统中服务器节点之间交互由路由过程决定,根据这一特点,本文提出一种新的资源分配模型,利用排队网络分析服务性能水平和资源使用情况。在此基础上,将问题定义为具有性能
会议
通过分析大数据应用的各种需求和现有大数据平台的特征,介绍几种可能的高效能途径。进一步,重点分析新型网络对大数据平台可能的支持,实验比较了传统以太网和高性能Infiniband网络、TCP/IP与RDMA协议的差别,最后给出了基于RDMA和Infiniband的Key-Value存储与处理效率改进方法与实践结果。
会议
We synthesized a nanoferroferric oxide materials using a chemical coprecipitation method and propose a technique to depress the low density lipoproteins in the blood.the physical and biological proper
Accurate characterization of nanomedicines reduces development costs and uncertainty in their translation from the lab to the clinic.As the size,concentration and surface charge of nanomedicines direc
会议
In this paper,we reported on,for the first time,a novel gate-all-around nanowire junctionless transistor (GAAN JLT) with gradient channel doping profile.Device structure,analytical model based on the
会议
Surface topology and chemical composition of a biomaterial play an important role in the regulation of biological behaviors including protein adsorption,cell adhesion,migration,spreading,proliferation
会议
The micro-/nano-channel fluidic science and technology have been attracting biophysics attentions,one of the main reasons is it can be effectively used in stretching,separating,manipulating and sequen