SEM is not a camera and the detector is not continuously image-forming like a CCD array or film. Unlike in an optical system, the resolution is not limited by the diffraction limit, fineness of lenses or mirrors or detector array resolution. The focusing optics can be large and coarse, and the SE detector is fist-sized and simply detects current. Instead, the spatial resolution of the SEM depends on the size of the electron spot, which in turn depends on both the wavelength of the electrons and the electron-optical system that produces the scanning beam. The resolution is also limited by the size of the interaction volume, the volume of specimen material that interacts with the electron beam. The spot size and the interaction volume are both large compared to the distances between atoms, so the resolution of the SEM is not high enough to image individual atoms, as is possible with transmission electron microscope (TEM). The SEM has compensating advantages, though, including the ability to image a comparatively large area of the specimen; the ability to image bulk materials (not just thin films or foils); and the variety of analytical modes available for measuring the composition and properties of the specimen. Depending on the instrument, the resolution can fall somewhere between less than 1 nm and 20 nm. As of 2009, The world's highest resolution conventional (≤30 kV) SEM can reach a point resolution of 0.4 nm using a secondary electron detector.[30] https://youtube.com/watch?v=e29F5n3ea0I&app=desktop
Digital marketing's development since the 1990s and 2000s has changed the way brands and businesses use technology for marketing.[2] As digital platforms are increasingly incorporated into marketing plans and everyday life,[3] and as people use digital devices instead of visiting physical shops,[4][5] digital marketing campaigns are becoming more prevalent and efficient.

Conversion rate optimization is still possibly one of the most underutilized but critical functions of digital marketing. Every element of digital marketing is useless without considering conversion rates. This goes for SEO, SEM, Social Media, Email, and Display. The power of your SEO rankings are only as good as your click through rates and your traffic is only valuable of your website and landing pages foster some type of “action.” Why spend all the time and energy driving traffic through multiple different channels if you are not willing to spend the time and energy on conversion optimization? Yet many brands and agencies still put less emphasis on this crucial piece of the puzzle.


The inbound methodology is the marketing and sales approach focused on attracting customers through content and interactions that are relevant and helpful. Each video you create should acknowledge your audience’s challenges and provide a solution. Looking at the big picture, this content guides consumers through the journey of becoming aware of, evaluating, and purchasing your product or service. https://m.youtube.com/watch?v=7bNPg8UbhaE


SEO in 2018 is the process of increasing organic traffic by creating content and optimizing webpages that match what search engine users are seeking. Search engine algorithms are closer than ever to mimicking a human understanding of query intent based on artificial intelligence; therefore the focus of all aspects of SEO need to be biased toward users with an emphasis on relevancy, quality, and engagement. http://www.youtube.com/watch?v=e29F5n3ea0I&feature=youtube_gdata
Digital marketing methods such as search engine optimization (SEO), search engine marketing (SEM), content marketing, influencer marketing, content automation, campaign marketing, data-driven marketing,[6] e-commerce marketing, social media marketing, social media optimization, e-mail direct marketing, display advertising, e–books, and optical disks and games are becoming more common in our advancing technology. In fact, digital marketing now extends to non-Internet channels that provide digital media, such as mobile phones (SMS and MMS), callback, and on-hold mobile ring tones.[7] In essence, this extension to non-Internet channels helps to differentiate digital marketing from online marketing, another catch-all term for the marketing methods mentioned above, which strictly occur online. https://www.youtube.com/watch?v=7bNPg8UbhaE&feature=youtube_gdata
Current search engine optimization focuses on techniques such as making sure that each web page has appropriate title tags and that the content is not "thin" or low-quality. High-quality content is original, authoritative, factual, grammatically correct, and engaging to users. Poorly edited articles with spelling and grammatical errors will be demoted by search engines.
There is limited real estate for the top positions in organic search results. With the amount of content on the web today and the number of competitors you have, it can be hard to get in a top position, even despite your best efforts. If you’re a new business or an existing one trying to build your online presence, SEM/PPC advertising can get you in front of highly targeted customers.

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.
According to Statistica, 76% of the U.S. population has at least one social networking profile and by 2020 the number of worldwide users of social media is expected to reach 2.95 billion (650 million of these from China alone). Of the social media platforms, Facebook is by far the most dominant - as of the end of the second quarter of 2018 Facebook had approximately 2.23 billion active users worldwide (Statistica). Mobile devices have become the dominant platform for Facebook usage - 68% of time spent on Facebook originates from mobile devices.

7. Keyword research. Specific target keywords aren’t as important for SEO success as they used to be, now that Google search is fueled by semantic and contextual understanding, but you should still be able to identify both head keyword (short, high-volume keywords) and long-tail keyword (longer, conversational, low-volume keywords) targets to guide the direction of your campaign. http://m.youtu.be/7bNPg8UbhaE
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