Name: encapsulation and permeability characteristics of plasma polymerized hollow particles
Uploaded: 2012-08-16T12:00:00
Description: Watch this Scientific Journal Video about Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles at JoVE.com

这项工作得到了美国国家科学基金会和先进的冷却技术批准号117041PO9621从批准号CBET-0651283。

1。制备纳米二氧化硅的沉积<ol><li>硅微粉干起，准备涂层样本，首先消除了大团聚。 </li><li>用乙醇二氧化硅微粒（直径为200纳米从凝胶Tec的公司购买）（190举证纯）洗净下通风柜与乙醇，直到所有的水分蒸发，留下样品。 </li><li>过筛颗粒通过一系列的金属网格（美国＃100-400）为了打破任何剩余的群。 </li><li>地方颗粒在管式反应器和一个小的磁力搅拌器栏， 如图1所示。颗粒应放?...

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	<li>Xu, X., Asher, S. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Synthesis+and+Utilization+of+Monodisperse+Hollow+Polymeric+Particles+in+Photonic+Crystals.">Synthesis and Utilization of Monodisperse Hollow Polymeric Particles in Photonic Crystals.</a> Journal of the American Chemical Society. 126, 7940-7945 (2004).</li><li>Lou, X., Archer, L., Yang, Z. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hollow+Micro-/nanostructures:+Synthesis+and+Applications.">Hollow Micro-/nanostructures: Synthesis and Applications.</a> Advanced Material. 20, (2008).</li><li>Kim, D. J., Kang, J. Y., Kim, K. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Coating+of+TiO2+Thin+Films+on+Particles+by+a+Plasma+Chemical+Vapor+Deposition+Process.">Coating of TiO2 Thin Films on Particles by a Plasma Chemical Vapor Deposition Process.</a> Advanced Powder Technology. 21, 136-140 (2010).</li><li>Marino, E., Huijser, T., Creyghton, Y., van der Heijden, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Synthesis+and+Coating+of+Copper+Oxide+Nanoparticles+Using+Atmospheric+Pressure+Plasmas.">Synthesis and Coating of Copper Oxide Nanoparticles Using Atmospheric Pressure Plasmas.</a> Surface and Coatings Technology. 201, 9205-9208 (2007).</li><li>Hakim, L., King, D., Zhou, Y., Gump, C., George, S., Weimer, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nanoparticle+Coating+for+Advanced+Optical,+Mechanical+and+Rheological+Properties.">Nanoparticle Coating for Advanced Optical, Mechanical and Rheological Properties.</a> Advanced Functional Materials. 17, 3175-3181 (2007).</li><li>Kim, S. H., Kim, J., Kang, B., Uhm, H. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Superhydrophobic+CFx+Coating+via+In-Line+Atmospheric+RF+Plasma+of+He-CF4-H2.">Superhydrophobic CFx Coating via In-Line Atmospheric RF Plasma of He-CF4-H2.</a> Langmuir. 21, 12213-12217 (2005).</li></ol>

纳米涂层的最大挑战之一是提供一个兼容的化学涂层与基体1,2之间。这里描述的方法的优点是，它不是特定材料。等离子聚合物表明对各种基材，包括硬质金属（ 图2（c）条 ），硅胶（ 图2（c）），硅或软质材料（如聚合物）优异的附着力，而不需要任何特殊的表面改性3 4,5。该技术具有更大的优势，它不是由核心颗粒大小的限制，并在纳米和微米范围?...

<table border="1"><tbody><tr><td>二氧化硅微粒</td><td> geltech公司</td><td></td><td></td></tr><tr><td>氯化钾（晶体） </td><td>电解二氧化锰化学品公司</td><td></td><td></td></tr><tr><td>异丙醇（99.9％） </td><td> Sigma-Aldrich公司</td><td></td><td></td></tr><tr><td>氢氟酸（48-51％） </td><td>厂商VWR </td><td></td><td></td></tr><tr><td>管道和法兰</td><td>世伟洛克</td><td></td><td> ¼直径1英寸</td></tr><tr><td>粗加工泵</td><td>爱德华兹</td><td></td><td></td></tr><tr><td>液氮陷阱</td><td>及ñ公司的</td><td></td><td></td></tr></tbody></table>

encapsulation and permeability characteristics of plasma polymerized hollow particles

在这个协议中，核壳纳米结构的等离子体增强化学气相沉积合成。我们生产各种固体物质，包括二氧化硅和氯化钾异丙醇等离子体聚合非晶屏障。这种多用途的技术被用来治疗范围从37纳米到1微米大小的纳米粒子和纳米粉体，沉积的薄膜，其厚度可以在任何地方从1纳米到100纳米以上。解散的核心，让我们学习的渗透通过薄膜的速率。在这些实验中，我们确定氯化钾通过阻隔膜的扩散系数涂层氯化钾纳米随后监测包覆颗粒悬浮在水中的离子电导率。在这个过程中的主要兴趣是溶质的封装和缓释。壳的厚度是由我们控制释放速率的独立变量之一。它具有强效率释放，从而增加了六个小时的释放（壳厚度为20 nm）到30天以上的长期释放（壳厚度为95纳米）。释放曲线显示了特有的行为：在前五分钟开始解散后，慢释放所有的核心材料，才最终材料（35％）快速释放出来。

Watch this Scientific Journal Video about Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles at JoVE.com

Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles

我们已经用等离子体增强化学气相沉积存入范围从几纳米到几100对各种材料的纳米粒子的纳米薄膜。我们随后蚀刻的核心原料生产空心球壳，其渗透壳的厚度控制。我们描述了这些涂料的透气性小分子，并证明这些障碍可以提供数天的核心材料的缓释。

等离子体聚合空心颗粒的封装和渗透特征

In this protocol, core-shell nanostructures are synthesized by plasma enhanced chemical vapor deposition. We produce an amorphous barrier by plasma ...

Research

JoVE Journal

Engineering

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

超短激光脉冲诱导的等离子体演化早期的调查

Early plasma is generated owing to high intensity laser irradiation of target and the subsequent target material ionization. Its dynamics plays a ...

科研

工程学

Experimental Measurement of Settling Velocity of Spherical Particles in Unconfined and Confined Surfactant-based Shear Thinning Viscoelastic Fluids

无约束和封闭表面活性剂中球形粒子沉降速度的实验测量 剪切变薄粘性流体

An experimental study is performed to measure the terminal settling velocities of spherical particles in surfactant based shear thinning viscoelastic ...

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters

如何点燃常压微波等离子体炬没有任何额外的点火器

This movie shows how an atmospheric pressure plasma torch can be ignited by microwave power with no additional igniters. After ignition of the plasma, a ...

Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence

测量的方向和旋转速率方法3D打印在湍流颗粒

Experimental methods are presented for measuring the rotational and translational motion of anisotropic particles in turbulent fluid flows. 3D printing ...

Fabrication and Operation of Acoustofluidic Devices Supporting Bulk Acoustic Standing Waves for Sheathless Focusing of Particles

制造和Acoustofluidic设备的运营支撑体声波驻波的聚焦鞘颗粒

Acoustophoresis refers to the displacement of suspended objects in response to directional forces from sound energy. Given that the suspended objects must ...

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic

运用X射线成像光谱水晶的使用为高温等离子体诊断

X-ray spectra provide a wealth of information on high temperature plasmas; for example electron temperature and density can be inferred from line ...

Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors

弯曲对基于晶体的柔性有机单场效应晶体管的电气特性的影响

The charge transport in an organic semiconductor depends highly on the molecular packing in the crystal, which influences the electronic coupling ...

An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation

大气压等离子体设置调查活性物种形成

Non-thermal atmospheric pressure (&#39;cold&#39;) plasmas have received increased attention in recent years due to their significant biomedical potential. ...

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals

放电等离子烧结设备中使用的钛酸锶双晶体的形成

A spark plasma sintering apparatus was used as a novel method for diffusion bonding of two single crystals of strontium titanate to form bicrystals with ...

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

小型化霍尔推进器的优化、测试和诊断

Miniaturized spacecraft and satellites require smart, highly efficient and durable low-thrust thrusters, capable of extended, reliable operation without ...