主题:【讨论】再问:碳膜铜网和微栅网的区别

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Thinking about coating your grids yourself?

Quite obviously, we would like you to rely on SPI for your custom coated grid needs. However, if we can't do that, we hope you will rely on SPI for your coating resins, indeed, if not all of your microscopy laboratory needs! But if you have decided to do your own grid coating, then make sure you become familiar with some tips from the SPI grid coating experts!


A few words about contaminants:

We are often times asked about the presence or absence of contaminants such as the alkali elements and Si. In the production of the SPI coated grids we take all possible precautions to prevent such contaminants from ending up on the grids. From time to time we conduct analyses on new grids in our own STEM looking for the presence of any such elements. And almost never do we ever detect anything. And when we do, we take steps to purge those contaminants from our process. But we do not guarantee these grids to have that kind of purity. In order to provide that kind of guarantee, we would have to do extensive analyses on each and every batch and we believe that the increased cost would not justify the incremental benefit. If you have some particular need along these lines, just let us know and let us respond with suggestions on how we could meet your specifications but yet for a reasonable price.

Listed below are the main types of grid patterns requested. However we can coat virtually any grid pattern (well there are some grids that can't be coated) so be sure to ask if you don't see what you want:

Just remember that we at SPI can coat just about anything. We have a unique grid coating capability and if you don't see exactly what you want, then send us a message and let us know what you need. As a rough rule of thumb, the lower mesh are the grids (below 150 mesh) the higher the cost because they tend to take more time because they are more difficult to coat. The coating of grids made from etched metal foils a still higher coating cost because they are just more difficult to prepare coated. You can be sure that whenever you are quoted a "surcharge" for the cost associated with the grid coating, it is based on a direct extrapolation for the additional time it takes to coat that kind of grid.

Just remember that the biggest problem an SPI customer faces, when presented with so many alternatives, is to decide which of the various support film possibilities is the optimum for their particular task at hand.


Final note on packaging:

All SPI Custom Coated Grids, including the Allred™ substrates, when possible, are shipped in an SPI Slide-A-Grid grid storage box. Since sometimes, after coating, it is not always that obvious which side is coated and which is uncoated, we have adopted the following standard conventions and they will be used unless specifically instructed otherwise:

    * For Formvar or carbon coated Formvar filmed grids: The coating is always on the shinny side of the grid.
    * For carbon coated grids, the carbon coating is always applied to the dull side of the grid and when loaded into the Slide-A-Grid grid storage box, the carbon coated side of the grids always face the center of the box.
    * For SiO and lacey grids of any type, the filmed coating is always on the dull side.

怪味陈皮
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原文由 lqzjf121323 发表:
1.是不是碳膜铜网和微栅铜网都有所谓的FORMVAR膜,它的确切名字又是什么?
2。如果不考虑制备的过程和可操作性,可不可以这样认为:微栅就是在已制好的碳膜铜网的基础上,在其上的碳膜上做一些微孔?

1.FORMVAR膜一般称为方华膜,是FORMVAR粉溶液固化形成的。在碳膜铜网和微栅中,方华膜起支撑作用,方华膜表层喷的碳起导电作用。
2.从结构上讲,碳膜铜网是一层方华膜+一层碳膜,微栅是一层带微孔的方华膜+一层碳膜。
xuaiqun
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我看了《电子显微镜》朱祖福等编。书上是这样讲的:铜网+致密的火棉胶膜或铜网+致密的方华膜,我们可称之为纯有机膜。在它们的上面再用真空蒸发的方法沉积一层碳膜就成了我们常讲的《碳支持膜》。如果是铜网+带微孔的火棉胶膜+沉积碳膜或金属膜(一般不会挡住原来的微孔)(喷的目的是提高强度),那应该就是大家讲的有孔的微栅。但是我们还可以在这种膜的基础上再用捞膜的方法再加上一层纯碳膜(注意先用真空沉积法得到纯碳膜,必须很薄)或火棉胶膜,这就成了带很薄碳膜的微栅。最后,如果是铜网+纯碳膜(先用真空沉积法得到纯碳膜,再用捞的方法)。那应该就是普通的纯碳膜。它可以厚一些。以上只是我的观点。不一定全对。
wbf1231
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北京中镜科仪技术有限公司位于北京市中关村高新技术科技园区中科科仪院内5号楼,在中国电子显微镜学会及众多电子显微学专家、学者的支持和鼓舞下,在国际国内各电镜厂商的配合与北京中关村高新技术企业协会的帮助下,于2006年7月创办,面向广大电镜工作者开展电镜设备及耗材销售、技术咨询、技术服务、技术培训等综合性的高新技术企业。
    目前已成为日本日新株式会社(NEM)和德国Quantifoil的支持膜系列在中国的独家代理,并代理销售美国SPI、EMS、Ted Pella、英国Agar、Gilder Grids、瑞士Dumont等世界知名公司的产品。中镜科仪自创办以来全力为发展民族产业而努力,并不断将创新产品推向国际市场。目前已出口到美国、英国、德国、瑞典、澳大利亚、意大利、新加坡、马来西亚、印度、日本、香港、台湾、澳门等国家和地区,向世界展示了中国制造的优良品质。同时把我们最优秀的一面展现在世界面前。
    在多元化的市场竞争中,中镜科仪本着“客户至上、诚信合作、务实双赢、敬业奉献、开拓创新”的基本原则;以最独特的视角,最先进的经营理念,最新颖的产品创意,以及最具活力的公司团队,与您共同携手,打造一片属于我们共同的蓝天,愿我们的产品在科技的海洋,助您一臂之力,扬帆起航,共同地大成功的彼岸!
  一、公司主要经营范围:

A-载网系列 
    有不同材质的载网,铜载网(铜网)、镍载网(镍网)、钼载网(钼网)、金载网(金网)、不锈钢载网、铍载网(铍网)、铝载网(铝网)、尼龙载网(尼龙网)等。还生产销售各种形状的载网,方孔载网、圆孔载网(六角载网)、坐标载网、光圈载网(铜环)、狭缝载网(椭圆/窄条载网)、双联网、双联环、平行载网、有柄载网、混目载网、多孔载网、SEM坐标载网、混条载网、特性片、正反载网。并可根据客户要求定制载网。
B-支持膜系列
    碳支持膜、微栅膜、超薄碳膜、坐标碳支持膜、坐标微栅膜,纯碳膜、小孔微栅膜、FIB微栅、多孔膜。
C-标准样品
    透射电镜标样:多晶铝标样、喷金微栅、平行格栅标样、网状格栅标样、乳胶格栅标样、石墨化碳标样。
    STEM放大倍数校正标样:喷金乳胶标样。
    扫描电镜放大倍数校正标样:碳/一氧化碳网状格栅、双联琼胶铜、单晶硅标样、碳基地锡球检测标样。
    扫描电镜像散校正/分辨率确定标样。
    扫描电镜能谱检测标样。
D-样品存取工具
    扫描电镜样品台,样品台专用镊子,透射电镜样品盒,扫描电镜样品盒,硅胶载网垫,样品及工具盒,真空取样笔,真空取样器。
E-专用镊子及工具
    高级防磁不锈钢镊子:弯头镊子、直头防腐涂层镊子、直头镊子、自锁镊子。
    塑料镊子:高温塑料平头镊子、防静电塑料尖头镊子、塑料尖头镊子、塑料弯头镊子。
    经济型不锈钢镊子:弯头镊子、直头镊子、鸭嘴镊子、小扁头镊子(硅片镊子)
    SEM(扫描电镜)专用镊子:SEM防磁样品台镊子、SEM圆柱状样品台镊子、SEM样品台镊子、SEM样品台钳子。
    生物专用剪刀:缝线剪、微型剪子。
    笔式钻石刻刀。
F-粘结用品
    银/碳导电胶、金导电胶、502导电胶、银/碳导电胶稀释液、双面碳导电胶垫、碳导电喷剂、双面碳导电胶带、单面铝/铜导电胶带、双面铜导电胶带、银导电记号笔、碳导电记号笔。
G-化学生物制样用品
    Epon812包埋剂、Spurr包埋剂、戊二醛、锇酸、醋酸双氧铀、真空干燥器、不锈钢干燥筐、包埋板、塑料培养皿、玻璃切片刀盒、离心管、包埋管、载玻片、盖玻片、制刀玻璃条。
H-金属材料制样用品
    XTEM夹具、玛瑙研钵、平衡研磨台、楔入式抛光具、热溶胶、AB树脂胶(快干胶)、离子减薄树脂(离子减薄截面胶)、调温加热板、超声波清洗器、金刚研磨薄膜、金刚石研磨膏。
I-图像处理及暗室用品
    透射电镜底片显影装置、滚轮裁纸刀、显微放大镜、测量放大镜、底片观察等、暗房安全灯、底片、显影/定影剂、防氧化瓶、底片保护袋、胶片扫描仪、双平台扫描仪。
J-真空溅射蒸度用品 
    碳棒、碳绳、电动碳棒切削机、钨丝蒸发篮、各种钼舟、云母片、各种金属丝、真空脂、各种金属靶材。
K-电镜清洁保养用品
    长纤维清洁布、高级镜头纸、高级洗耳球、强力洗尘器、防护镜、防静电手套、乳胶手套、微型电钻产品、红外烘烤灯、放大镜、秒表和温湿度计、高级封口膜、循环水冷却器、室内除湿机、电子干燥箱、精密控制减压阀。
L-电镜室常用工具
阀门、真空连接件、液氮罐、FA系列电子分析天平、便携式电子天平、光纤照明灯、红外烘烤灯、照明放大镜、专业护眼灯、静电消除枪、色差仪、收纳盒、数显千分尺、数显游标卡尺、游标卡尺、数字显示温湿度计、数字循环、控制器、双计时秒表、随身扫描仪、数码笔、吸尘器、真空取样笔、真空取样器、便携式机械真空吸笔、竹签等等。
M-电镜室常用设备
减薄仪、全自动样品制备系统、溅射仪、蒸镀仪、亲水性处理仪、干燥仪、真空干燥器、电子干燥箱、室内环保设备、超纯水仪、超声波细胞粉碎机、超声冲样机、电子曝光机(纳米图形发生器)、科研型生物显微镜、磨凹仪、抛光机、纳米显微操纵仪、循环水冷却器、真空泵、真空检漏仪等等。
N-电镜方面图书
    《材料评价的高分辨电子显微方法》、《材料评价的分析电子显微方法》、《电子衍射物理教程》、《透射电子显微学进展》、《实用电子显微镜技术》、《植物病毒分类图谱》、《实用生物医学电子显微镜技术》、《细胞超微结构与电镜技术-分子细胞生物学基础》、《扫描电镜测长问题的讨论》、《中国媒的扫描电子显微镜研究》、《纳米材料表征》、《纳米技术中的显微学手册》、《纳米技术手册》、《激光扫描共聚焦显微镜技术教程》、《微纳米加工技术及其应用》、《Micro-nanofabrication Technology and Application》。

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Last edit by drizzlemiao
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