Brunson talks about this reverse engineering in his book called, Dot Com Secrets, a homage to the internet marketing industry, and quite possibly one of the best and most transparent books around in the field. Communication is what will bridge the divide between making no money and becoming a massive six or seven-figure earner. Be straight with people and learn to communicate effectively and understand every stage of the process and you'll prosper as an internet marketer.
Understand that whatever you're going to do, you'll need traffic. If you don't have any money at the outset, your hands will be tied no matter what anyone tells you. The truth is that you need to drive traffic to your offers if you want them to convert. These are what we call landing pages or squeeze pages. This is where you're coming into contact with the customers, either for the first time or after they get to know you a little bit better.

Often the line between pay per click advertising and paid inclusion is debatable. Some have lobbied for any paid listings to be labeled as an advertisement, while defenders insist they are not actually ads since the webmasters do not control the content of the listing, its ranking, or even whether it is shown to any users. Another advantage of paid inclusion is that it allows site owners to specify particular schedules for crawling pages. In the general case, one has no control as to when their page will be crawled or added to a search engine index. Paid inclusion proves to be particularly useful for cases where pages are dynamically generated and frequently modified. https://youtube.com/embed/e29F5n3ea0I


Digital marketing is also referred to as 'online marketing', 'internet marketing' or 'web marketing'. The term digital marketing has grown in popularity over time. In the USA online marketing is still a popular term. In Italy, digital marketing is referred to as web marketing. Worldwide digital marketing has become the most common term, especially after the year 2013.[19] http://youtube.com/watch?feature=youtu.be&v=e29F5n3ea0I
Yes, you read that title correctly. That out of their minds, slightly alcoholic team over at Epic Meal Time were the first to teach me about YouTube marketing. As with all successful YouTube channels, they had to build their own channel themselves. There was no network backing them or an executive producer coming on board to show them the ropes. There wasn’t even anyone with any real experience! https://www.youtube.com/v/e29F5n3ea0I&feature=kp
Search engines may penalize sites they discover using black hat methods, either by reducing their rankings or eliminating their listings from their databases altogether. Such penalties can be applied either automatically by the search engines' algorithms, or by a manual site review. One example was the February 2006 Google removal of both BMW Germany and Ricoh Germany for use of deceptive practices.[52] Both companies, however, quickly apologized, fixed the offending pages, and were restored to Google's list.[53]
In a typical SEM, an electron beam is thermionically emitted from an electron gun fitted with a tungsten filament cathode. Tungsten is normally used in thermionic electron guns because it has the highest melting point and lowest vapor pressure of all metals, thereby allowing it to be electrically heated for electron emission, and because of its low cost. Other types of electron emitters include lanthanum hexaboride (LaB
A compelling call to action (CTA). Whether you want a visitor to make a purchase, give you their contact information, or download a file, the CTA should be easy to spot and optimized to get the most conversions. Will your mailing list get more sign-ups with a button that says “subscribe now,” “register today,” or “sign me up?” You may need to do some testing to find out.
An essential part of any Internet marketing campaign is the analysis of data gathered from not just the campaign as a whole, but each piece of it as well. An analyst can chart how many people have visited the product website since its launch, how people are interacting with the campaign's social networking pages, and whether sales have been affected by the campaign (See also Marketing Data Analyst). This information will not only indicate whether the marketing campaign is working, but it is also valuable data to determine what to keep and what to avoid in the next campaign.
Influencer marketing: Important nodes are identified within related communities, known as influencers. This is becoming an important concept in digital targeting. It is possible to reach influencers via paid advertising, such as Facebook Advertising or Google Adwords campaigns, or through sophisticated sCRM (social customer relationship management) software, such as SAP C4C, Microsoft Dynamics, Sage CRM and Salesforce CRM. Many universities now focus, at Masters level, on engagement strategies for influencers.
Nonconductive specimens collect charge when scanned by the electron beam, and especially in secondary electron imaging mode, this causes scanning faults and other image artifacts. For conventional imaging in the SEM, specimens must be electrically conductive, at least at the surface, and electrically grounded to prevent the accumulation of electrostatic charge. Metal objects require little special preparation for SEM except for cleaning and conductively mounting to a specimen stub. Non-conducting materials are usually coated with an ultrathin coating of electrically conducting material, deposited on the sample either by low-vacuum sputter coating or by high-vacuum evaporation. Conductive materials in current use for specimen coating include gold, gold/palladium alloy, platinum, iridium, tungsten, chromium, osmium,[13] and graphite. Coating with heavy metals may increase signal/noise ratio for samples of low atomic number (Z). The improvement arises because secondary electron emission for high-Z materials is enhanced.
But, just like blogging, this trend has also encouraged plenty of low-quality, rapidly produced content. Although this content may not actually work very well, it does compete for attention with any content you create. It makes it even more challenging for a B2B or B2C buyer to discover the video that will actually answer their question or solve their problem.
When a search engine user in the targeted area searches for the keywords or keyphrases that you chose, your ad enters an immediate online auction. Your ad is displayed when it matches bid and relevancy criteria, so you want to make sure that you have an appropriate budget size, and that you are bidding on keyphrases relevant to your products/services (such as those indicated on your website or landing page). You are not charged when your ad is displayed, but rather when someone clicks on your ad to take further action.
Search engine marketing, or SEM, is meant to cover both search engine optimization (SEO) and paid search, also known as PPC (pay-per-click) or CPC (cost-per-click). From enhancing content with organic keywords to making sure a landing page meets Google AdWords quality guidelines, any optimization for the web traditionally fell under the umbrella of SEM. Over time, though, SEM has come to mean something much more specific. Popular usage now covers paid search exclusively, with SEO separated out. SEM still refers occasionally to paid search with a minor emphasis on SEO, but that’s even rarer than using the term properly. For clarity’s sake, I’ll replace SEM with “paid search” for the rest of this post. http://www.youtube.com/v/e29F5n3ea0I&feature=share
There is a heap of sales clutter on the Internet that is actively annoying and repelling your customers. Don’t let your brand be that guy – instead, your video should be centred around the story and not the sale. Remember: the same rules that apply for written content marketing apply for video marketing – concentrate on the value you’re providing for your customers.
There’s no avoiding it: internet marketing is critical for the success of your business in 2018. But with all the gimmicks and tricks, it can be difficult to distinguish short-term wins from effective long-term strategies, which is why we’ve created an ultimate guide. Here, we’ll cover everything from marketing strategies to real-world examples, to ensure your business reaches the right people out of that four billion. http://youtube.com/e/e29F5n3ea0I?app=desktop
The truth? Today, rising above the noise and achieving any semblance of visibility has become a monumental undertaking. While we might prevail at searching, we fail at being found. How are we supposed to get notice while swimming in a sea of misinformation and disinformation? We've become immersed in this guru gauntlet where one expert after another is attempting to teach us how we can get the proverbial word out about our businesses and achieve visibility to drive more leads and sales, but we all still seem to be lost.
Search results are presented in an ordered list, and the higher up on that list a site can get, the more traffic the site will tend to receive. For example, for a typical search query, the number one result will receive 40-60% of the total traffic for that query, with the number two and three results receiving significantly less traffic. Only 2-3% of users click beyond the first page of search results.
Search engines are smart, but they still need help. The major engines are always working to improve their technology to crawl the web more deeply and return better results to users. However, there is a limit to how search engines can operate. Whereas the right SEO can net you thousands of visitors and increased attention, the wrong moves can hide or bury your site deep in the search results where visibility is minimal.

A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition of the sample. The electron beam is scanned in a raster scan pattern, and the position of the beam is combined with the detected signal to produce an image. SEM can achieve resolution better than 1 nanometer. Specimens are observed in high vacuum in conventional SEM, or in low vacuum or wet conditions in variable pressure or environmental SEM, and at a wide range of cryogenic or elevated temperatures with specialized instruments.[1]


Internet marketing is not a singular approach to raising interest and awareness in a product. Because of the vast number of platforms the Internet creates, the field encompasses several disciplines. It involves everything from email, to Search Engine Optimization (SEO), to website design, and much more to reach an ever-evolving, ever-growing audience. (See also Web Marketing)
What's the authority of your website or webpage, or any other page on the internet for that matter where you're attempting to gain visibility? Authority is an important component of trust, and it relies heavily on quality links coming from websites that Google already trusts. Authority largely relates to the off-page optimization discipline of SEO that occurs away from the webpage as opposed to the on-page optimization that occurs directly on the webpage.
2. The content quality is very important, but the production quality is not that important. Production quality and technical aspects have to be OK but not world class. Better production quality is correlated with more trust, but it can’t make up for the lack of substance. So, Facebook Live videos, webinar recordings, and other video material with good enough production quality will work as long as the content itself is engaging. https://m.youtube.com/watch?v=e29F5n3ea0I

To avoid undesirable content in the search indexes, webmasters can instruct spiders not to crawl certain files or directories through the standard robots.txt file in the root directory of the domain. Additionally, a page can be explicitly excluded from a search engine's database by using a meta tag specific to robots (usually ). When a search engine visits a site, the robots.txt located in the root directory is the first file crawled. The robots.txt file is then parsed and will instruct the robot as to which pages are not to be crawled. As a search engine crawler may keep a cached copy of this file, it may on occasion crawl pages a webmaster does not wish crawled. Pages typically prevented from being crawled include login specific pages such as shopping carts and user-specific content such as search results from internal searches. In March 2007, Google warned webmasters that they should prevent indexing of internal search results because those pages are considered search spam.[45]
All of these questions can help determine what type of video you should make and where you should post it. For example, if your target audience is not familiar with your company, you probably want to make a video that focuses on brand awareness before producing an in-depth, product video. You’ll also want to host your video on a site that already has a large reach, like YouTube. 
Next, consider your audience and the overall mood for your production. Are you targeting a small audience that will appreciate the newest, underground hip-hop track, or do you need something that will appeal to many demographics? Are you creating a practical product tutorial or an upbeat event recap? Be sure to choose music that enhances the overall tone of your video.
Cathodoluminescence, the emission of light when atoms excited by high-energy electrons return to their ground state, is analogous to UV-induced fluorescence, and some materials such as zinc sulfide and some fluorescent dyes, exhibit both phenomena. Over the last decades, cathodoluminescence was most commonly experienced as the light emission from the inner surface of the cathode ray tube in television sets and computer CRT monitors. In the SEM, CL detectors either collect all light emitted by the specimen or can analyse the wavelengths emitted by the specimen and display an emission spectrum or an image of the distribution of cathodoluminescence emitted by the specimen in real color.
Your first opportunity to delight comes directly after the purchase. Consider sending a thank you video to welcome them into the community or an onboarding video to get them rolling with their new purchase. Then, build out a library of educational courses or product training videos to cater to consumers who prefer self-service or simply want to expand their expertise.
Search engine marketing (SEM) is a form of Internet marketing that involves the promotion of websites by increasing their visibility in search engine results pages (SERPs) primarily through paid advertising.[1] SEM may incorporate search engine optimization (SEO), which adjusts or rewrites website content and site architecture to achieve a higher ranking in search engine results pages to enhance pay per click (PPC) listings.[2]
In the 2000s, with more and more Internet users and the birth of iPhone, customers started searching products and making decisions about their needs online first, instead of consulting a salesperson, which created a new problem for the marketing department of a company. In addition, a survey in 2000 in the United Kingdom found that most retailers had not registered their own domain address.[12] These problems made marketers find the digital ways for market development.
There are endless platforms for video marketing. YouTube, broadcast television, video boards and street marketing, you name it. The possibilities are endless. With a smartphone, consumers can access online video anytime, anywhere. The same is not true with traditional, paper marketing. With video, you can reach your audience wherever they are in a cost-effective way.

There are many websites that offer advice, case studies, and best practices for marketing campaigns. But the only true way to test what works with a target audience is to test different options live and see what happens. This is the data-driven approach to marketing touted by many marketing specialists and often implemented by high-growth companies to rapidly test simultaneous ideas.

Digital marketing is also referred to as 'online marketing', 'internet marketing' or 'web marketing'. The term digital marketing has grown in popularity over time. In the USA online marketing is still a popular term. In Italy, digital marketing is referred to as web marketing. Worldwide digital marketing has become the most common term, especially after the year 2013.[19]

Another example when the “nofollow" attribute can come handy are widget links. If you are using a third party's widget to enrich the experience of your site and engage users, check if it contains any links that you did not intend to place on your site along with the widget. Some widgets may add links to your site which are not your editorial choice and contain anchor text that you as a webmaster may not control. If removing such unwanted links from the widget is not possible, you can always disable them with “nofollow" attribute. If you create a widget for functionality or content that you provide, make sure to include the nofollow on links in the default code snippet. https://www.youtube.com/v/7bNPg8UbhaE&feature=share
In addition to giving you insight into the search volume and competition level of keywords, most keyword research tools will also give you detailed information about the average or current estimated CPC for particular keywords are. This is particularly important for businesses with smaller ad budgets and this feature allows you to predict whether certain keywords will be truly beneficial to your ad campaigns or if they’ll cost too much.

Brunson talks about this reverse engineering in his book called, Dot Com Secrets, a homage to the internet marketing industry, and quite possibly one of the best and most transparent books around in the field. Communication is what will bridge the divide between making no money and becoming a massive six or seven-figure earner. Be straight with people and learn to communicate effectively and understand every stage of the process and you'll prosper as an internet marketer.


Thanks to its viral nature, simple accessibility and built-in value, video marketing stands out as a smart way to approach content marketing in 2017 and beyond. Video marketing is an incredible way to create content that is personal and has a real impact on your audience. It has an incomparable ability to create emotion driven sales – and sales are always personal on some level. Buyers want to feel good about their choice, and video marketing, when done correctly, is the best way to create this feeling.
Step by Step Guide Showing you How to Make an Animated Promo Video in 1hour. We will do this by remaking a popular, Master Card Commercial. You know the ones, "Hotdog $5, 2 Seats near the dugout $150, Spending an afternoon with your son, Priceless". With Over 2,700 Students and 4.5 Star Rating this is one of the Best Courses on Making Animated Promo Videos!
The SEM is routinely used to generate high-resolution images of shapes of objects (SEI) and to show spatial variations in chemical compositions: 1) acquiring elemental maps or spot chemical analyses using EDS, 2)discrimination of phases based on mean atomic number (commonly related to relative density) using BSE, and 3) compositional maps based on differences in trace element "activitors" (typically transition metal and Rare Earth elements) using CL. The SEM is also widely used to identify phases based on qualitative chemical analysis and/or crystalline structure. Precise measurement of very small features and objects down to 50 nm in size is also accomplished using the SEM. Backescattered electron images (BSE) can be used for rapid discrimination of phases in multiphase samples. SEMs equipped with diffracted backscattered electron detectors (EBSD) can be used to examine microfabric and crystallographic orientation in many materials.
The scanning electron microscope (SEM) uses a focused beam of high-energy electrons to generate a variety of signals at the surface of solid specimens. The signals that derive from electron-sample interactions reveal information about the sample including external morphology (texture), chemical composition, and crystalline structure and orientation of materials making up the sample. In most applications, data are collected over a selected area of the surface of the sample, and a 2-dimensional image is generated that displays spatial variations in these properties. Areas ranging from approximately 1 cm to 5 microns in width can be imaged in a scanning mode using conventional SEM techniques (magnification ranging from 20X to approximately 30,000X, spatial resolution of 50 to 100 nm). The SEM is also capable of performing analyses of selected point locations on the sample; this approach is especially useful in qualitatively or semi-quantitatively determining chemical compositions (using EDS), crystalline structure, and crystal orientations (using EBSD). The design and function of the SEM is very similar to the EPMA and considerable overlap in capabilities exists between the two instruments.

The criteria and metrics can be classified according to its type and time span. Regarding the type, we can either evaluate these campaigns "Quantitatively" or "Qualitatively". Quantitative metrics may include "Sales Volume" and "Revenue Increase/Decrease". While qualitative metrics may include the enhanced "Brand awareness, image and health" as well as the "relationship with the customers".
What is Search Engine Optimization (also known as SEO)? A broad definition is that search engine optimization is the art and science of making web pages attractive to search engines. More narrowly, SEO seeks to tweak particular factors known to affect search engine standing to make certain pages more attractive to search engines than other web pages that are vying for the same keywords or keyword phrases.
There are ten essential types of marketing that can be done online. Some of these can be broken down into organic marketing and others can be categorized as paid marketing. Organic, of course, is the allure of marketing professionals from around the planet. It's free and its unencumbered traffic that simply keeps coming. Paid marketing, on the other hand, is still a very attractive proposition as long as the marketing pays for itself by having the right type of offer that converts.

In February 2011, Google announced the Panda update, which penalizes websites containing content duplicated from other websites and sources. Historically websites have copied content from one another and benefited in search engine rankings by engaging in this practice. However Google implemented a new system which punishes sites whose content is not unique.[35] The 2012 Google Penguin attempted to penalize websites that used manipulative techniques to improve their rankings on the search engine.[36] Although Google Penguin has been presented as an algorithm aimed at fighting web spam, it really focuses on spammy links[37] by gauging the quality of the sites the links are coming from. The 2013 Google Hummingbird update featured an algorithm change designed to improve Google's natural language processing and semantic understanding of web pages. Hummingbird's language processing system falls under the newly recognised term of 'Conversational Search' where the system pays more attention to each word in the query in order to better match the pages to the meaning of the query rather than a few words [38]. With regards to the changes made to search engine optimization, for content publishers and writers, Hummingbird is intended to resolve issues by getting rid of irrelevant content and spam, allowing Google to produce high-quality content and rely on them to be 'trusted' authors.
Another disadvantage is that even an individual or small group of people can harm image of an established brand. For instance Dopplegnager is a term that is used to disapprove an image about a certain brand that is spread by anti-brand activists, bloggers, and opinion leaders. The word Doppelganger is a combination of two German words Doppel (double) and Ganger (walker), thus it means double walker or as in English it is said alter ego. Generally brand creates images for itself to emotionally appeal to their customers. However some would disagree with this image and make alterations to this image and present in funny or cynical way, hence distorting the brand image, hence creating a Doppelganger image, blog or content (Rindfleisch, 2016).
SEM search results have ad extensions. SEO search results have featured snippets. When comparing SEM vs. SEO, you’ll also find differences in the appearance of the search results. SEM search results may include ad extensions, which can add on additional links, phone numbers, and callouts. On the other hand, SEO results may appear with featured snippets in search.
Sixty-five percent of business decision-makers visit a marketer’s website after viewing a branded video. It’s clear that quality and relevant video marketing content can dramatically improve your site’s SEO by driving people to your homepage. Additionally, video can enhance your conversion rates: HubSpot reports that 39% of business decision-makers contact a vendor after viewing a branded video. https://m.youtube.com/watch?feature=player_embedded&v=7bNPg8UbhaE

According to HubSpot, 80% of customers remember a video they’ve watched in the last month. One of the biggest strengths of video marketing is that it’s highly visual and auditory, which means it’s easier for many users to remember than text-based content. When customers remember your video marketing content, they also remember your brand, which translates to more sales and leads for you. What’s more, customers typically like to share videos they enjoy, which can expand your online reach.
Google continuously develops and improves upon their algorithm to create a sophisticated machine that learns as it grows; the more it learns, the less humans can comprehend. Over the years, SEO strategies have evolved in attempts to keep pace with Google’s algorithm changes and updates with the use of machine learning and data science, and this is SEO in 2018.
Most online marketers mistakenly attribute 100% of a sale or lead to the Last Clicked source. The main reason for this is that analytic solutions only provide last click analysis. 93% to 95% of marketing touch points are ignored when you only attribute success to the last click. That is why multi-attribution is required to properly source sales or leads.
This method requires an SEM image obtained in oblique low angle lighting. The grey-level is then interpreted as the slope, and the slope integrated to restore the specimen topography. This method is interesting for visual enhancement and the detection of the shape and position of objects ; however the vertical heights cannot usually be calibrated, contrary to other methods such as photogrammetry.[41] https://www.youtube.com/watch?v=e29F5n3ea0I&app=mobile
Website ranking doesn't just come from what's on your website. Google, the number one search engine used today, uses a variety of other factors to rank websites. Things like your social media activity, appearances on other sites through interviews or guest blogging, and being listed as a resource on another site all increase your standing in Google's eyes.

Using Dr Dave Chaffey's approach, the digital marketing planning (DMP) has three main stages: Opportunity, Strategy and Action. He suggests that any business looking to implement a successful digital marketing strategy must structure their plan by looking at opportunity, strategy and action. This generic strategic approach often has phases of situation review, goal setting, strategy formulation, resource allocation and monitoring.[59]

Search engine marketing is a method of promotion and advertising to help companies’ content rank higher among search engine traffic. Like search engine optimization (SEO), search engine marketing (SEM) helps companies improve the way content is ranked by search engines. SEM helps companies bring their products and services to the attention of audiences who are ready to buy.
Here’s where the final lesson of composition comes in: continuity. Continuity is the process of combining shots into a sequence so that they appear to have happened at the same time and place. A key part of continuity is making sure any ancillary objects in the scene — for example, a cup of water on a desk — stay in the same place (and have the same amount of water) throughout all of the shots.
Within your channel itself, you can also organize videos into playlists, making it easy for your audience to search within your content. As a social platform, viewers can engage with your videos by liking and commenting on them, providing you another chance to interact with your audience. YouTube also offers a variety of advertising options for more sophisticated targeting.
Google's core algorithms and its propensity to shroud its data in layers of obscurity is not something new. However, it is critical to any understanding of marketing on the internet simply because this visibility is at the heart of everything else that you do. Forget about social media and other forms of marketing for the time being. Search engine optimization (SEO) offers up the proverbial key to near-limitless amounts of traffic on the web.
Online marketing can also be crowded and competitive. Although the opportunities to provide goods and services in both local and far-reaching markets is empowering, the competition can be significant. Companies investing in online marketing may find visitors’ attention is difficult to capture due to the number of business also marketing their products and services online. Marketers must develop a balance of building a unique value proposition and brand voice as they test and build marketing campaigns on various channels.

We have the capability to work with our clients’ internal content, creative, and email marketing teams or handle the whole campaign for them. We incorporate our proven strategic consulting services as part of our Email Marketing offerings in order to help our partner clients develop effective strategies for building their email lists. These consulting services include assistance with event planning, creative design, website and landing page email capture, and much more. We help our clients not only with engagement but new email acquisition, list segmentation and list cleansing.


SEO involves the deliberate use of keywords, HTML tags, meta data and other content-related or backend-oriented tactics to manipulate your rank on Google. The more authority you gain through these SEO strategies, the higher your website shows in the Google search engine results pages (SERPs). The higher your website, the better brand awareness, the higher the traffic and the more consumers convert.

Search results are presented in an ordered list, and the higher up on that list a site can get, the more traffic the site will tend to receive. For example, for a typical search query, the number one result will receive 40-60% of the total traffic for that query, with the number two and three results receiving significantly less traffic. Only 2-3% of users click beyond the first page of search results. http://www.youtube.com/v/e29F5n3ea0I&feature=kp


Once the company has identified the target demographic for its Internet marketing campaign, they then decide what online platforms will comprise the campaign. For instance, a company that is seeking customers from the 18 to 33 demographic should develop a mobile application that raises awareness about the product, such as a game, a news feed, or a daily coupon program users can download for free.
Digital marketing became more sophisticated in the 2000s and the 2010s, when[13][14] the proliferation of devices' capable of accessing digital media led to sudden growth.[15] Statistics produced in 2012 and 2013 showed that digital marketing was still growing.[16][17] With the development of social media in the 2000s, such as LinkedIn, Facebook, YouTube and Twitter, consumers became highly dependent on digital electronics in daily lives. Therefore, they expected a seamless user experience across different channels for searching product's information. The change of customer behavior improved the diversification of marketing technology.[18]
Our Website Design & Development team has the skill and creativity to take your vision and translate that into an amazing interactive experience. Our designers and usability experts use best practices for combining amazing designs with an effective user experience. Our web developers and SEO developers work together to create websites that have both aesthetic appeal and SEO friendly code structure. Our proprietary methods for SEO website development will ensure that you hit the ground running upon launch! https://www.youtube.com/e/e29F5n3ea0I?app=desktop

Using an omni-channel strategy is becoming increasingly important for enterprises who must adapt to the changing expectations of consumers who want ever-more sophisticated offerings throughout the purchasing journey. Retailers are increasingly focusing on their online presence, including online shops that operate alongside existing store-based outlets. The "endless aisle" within the retail space can lead consumers to purchase products online that fit their needs while retailers do not have to carry the inventory within the physical location of the store. Solely Internet-based retailers are also entering the market; some are establishing corresponding store-based outlets to provide personal services, professional help, and tangible experiences with their products.[24]
Samples must be solid and they must fit into the microscope chamber. Maximum size in horizontal dimensions is usually on the order of 10 cm, vertical dimensions are generally much more limited and rarely exceed 40 mm. For most instruments samples must be stable in a vacuum on the order of 10-5 - 10-6 torr. Samples likely to outgas at low pressures (rocks saturated with hydrocarbons, "wet" samples such as coal, organic materials or swelling clays, and samples likely to decrepitate at low pressure) are unsuitable for examination in conventional SEM's. However, "low vacuum" and "environmental" SEMs also exist, and many of these types of samples can be successfully examined in these specialized instruments. EDS detectors on SEM's cannot detect very light elements (H, He, and Li), and many instruments cannot detect elements with atomic numbers less than 11 (Na). Most SEMs use a solid state x-ray detector (EDS), and while these detectors are very fast and easy to utilize, they have relatively poor energy resolution and sensitivity to elements present in low abundances when compared to wavelength dispersive x-ray detectors (WDS) on most electron probe microanalyzers (EPMA). An electrically conductive coating must be applied to electrically insulating samples for study in conventional SEM's, unless the instrument is capable of operation in a low vacuum mode. http://youtube.com/watch?v=7bNPg8UbhaE
×