Monitoring the real-time deformation of carbon nanocoils under axial loading

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7 hours ago Real-time observation of CNC tensile tests and SIM images of variations in the coil geometry over time. Credit: Toyohashi University of Technology

Carbon nanocoils (CNCs) composed of helical shaped carbon nanofibers have potential applications including mechanical springs and nano-solenoids. There are some reports which measure the spring constant of CNCs.

However, the CNC response to prolonged stretching, which includes initial elastic elongation to large-scale deformation in the plastic regime and subsequent tensile fracture followed by post-fracture contraction and the release of the applied strain, remains undetermined. It is crucially important to secure real-time measurements of CNC deformation beyond the linear elastic regime.

Here, Taiichiro Yonemura and colleagues at Toyohashi University of Technology describe the real-time deformation data that exhibited sequential change in CNC geometry after each coil was subjected to a uniaxial load at a constant rate.

CNC tensile tests were conducted as follows: The CNCs were installed into an FIB system with a tungsten (W) probe with a 500 nm tip diameter and the W probe moved until it adhered to CNC using Pt ion beam whereas the Si ion beam cut the CNC bottom; then the CNC-adhered W probe approaches a spring table substrate surface, until the CNC was almost perpendicularly to the substrate. The tensile tests were performed on nine CNCs by gradually changing the distance between the substrate and W probe.

The real-time data of a CNC tensile test performed using a spring table in the FIB chamber was monitored. A series of three scanning ion microscopy (SIM) images offers visualization of the geometric evolution of the CNC under a tensile load. These images were captured in the free state (t = 0 s), the maximum elongation point (t = 910 s), and a post-fracture state (t = 960 s).

To determine the elastic boundary of the CNCs, we examined the relationship between the applied strain and residual elongation ratios of CNCs after the load release. The result indicates that the CNCs were in the elastic region for elongations up to approximately 15% strain.

Tensile tests, performed on nine different CNCs, revealed that the average CNC spring constant was 1.8 N/m. Using a theoretical equation for the design of macroscopic springs, the shear moduli of the nine CNCs were estimated to be 6 GPa on average. These results may serve as a milestone for developing CNC-based applications in the future.

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More information: Taiichiro Yonemura, Yoshiyuki Suda, Hiroyuki Shima, Yasushi Nakamura, Hideto Tanoue, Hirofumi Takikawa, Hitoshi Ue, Kazuki Shimizu, and Yoshito Umeda, Real-time deformation of carbon nanocoils under axial loading, Carbon, 83, 183-187 (2015). dx.doi.org/10.1016/j.carbon.2014.11.034

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Monitoring the real-time deformation of carbon nanocoils under axial loading

Bevy wants to get your photos and videos out of their digital sandboxes

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Lineage Labs Bevy drive and app let you take, consolidate and view photos on the fly.

Image: Lineage Labs

By Lance Ulanoff2015-02-18 07:26:35 UTC

Raise your hand if you feel buried by the number of photos you have on various devices or confused about which service or software to use to store and organize all of them for you and your family. Okay, thats everyone.

Were living in the midst of what can best be described as a photo-splosion. With nearly 2 billion smartphone owners in the world, weve become snappy-happy photographers. Every moment is worth capturing (and sharing, Facebook gets nearly 350 million photos per day). Increasingly, though, people are losing track of what they shot and where it lives. Its one of the reasons that recent software and product updates from companies like Apple, Amazon, Google and Microsoft have paid so much attention to photo management.

They all have their own organization tools and cloud storage. This is a good thing, unless youre a non-homogenous family, with iOS, Android, Windows and Amazon devices. Each one offers to auto store your photos and, as long as everyone is on the same platform, all can see and share the images. Even if thats the case, though, the baseline storage options offered by most isnt enough to store a familys worth of images and video (yes, you can always buy more storage).

As a result, a new class of products has emerged, led by Lyve Home, a 2 Terabyte box and free app that lets you store everyones photos in one place all they need to do is install the Lyve app on all devices (all platforms) and the app does the rest. Lyve is interesting because it also offers the option of using just the app. This way, photos are not copied to the cloud or a network-attached storage (NAS). Instead everyone sees thumbnails of all the photos in the Lyve collective. If they tap on thumb, they pull the full image from the source (which may be someone elses phone) with permission, of course.

The 1 terabyte Bevy photo storage and sharing system from Lineage Labs.

Now another startup, Lineage Labs, is entering the photo management fray. Like Lyve, it tries to solve the photo conundrum by centralizing photo and video storage on a 1 TB drive and service called Bevy, a name chosen because it means "a large collection of things."

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Bevy wants to get your photos and videos out of their digital sandboxes

7 Things You Should Never Do on Twitter

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One of the best, and most important, things about social media is that there are no hard and fast rules. Social media is what you make of it, and there's no right or wrong way to use it.

Social Media Rules of Engagement

However, some social networks are better-suited for certain activities than others. Twitter has more than 288 million monthly active users who post around 500 million tweets each day. The platform has been around for nearly eight years, but many people still don't understand Twitter or how to effectively use it.

Twitter can be surprisingly fruitful and at the same time mind-numbingly wasteful. As you scroll through your feed, reading breaking news updates, it can be jolting to suddenly see a completely non-related tweet, such as a haiku about someone's breakfast.

And that's OK. Twitter is designed to be a global, online town square, and if you want to make the most of the service you have to accept everything -- the good, bad and mundane -- that comes with it. Many of the things that make Twitter seem terrible at times are the same things that make it great. If you're not getting value out of Twitter, you're probably not following the right people. You also need to remember that Twitter is a two-way street, and you should be just as thoughtful about how you represent yourself on the platform as you are about the people you choose to follow.

Read on for our Twitter rules of engagement.

Don't Create Tweetstorms

Tweetstorms are a relatively new Twitter phenomenon, created mostly by academic types, billionaires and people who just love to see themselves tweet. Twitter messages are limited to 140 characters for good reason, and brevity is a thing of beauty. It's something you should cherish about Twitter, not circumvent.

It can be tough to narrow a thought, idea or joke down to 140 characters, but that's part of the fun of Twitter. There are plenty of things that can't be said in 140 characters, and those are what blogs, pens and paper are for.

If you can't say something on Twitter in less than 140 characters, don't say it at all. Sometimes a series of related tweets is warranted, but you should always keep them relevant -- and please don't write sentences that run from one tweet to the next. That's just obnoxious.

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7 Things You Should Never Do on Twitter

The Muthaship: "Eastern Medicine House Call" Episode 12 – BEYONDreality – Video

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The Muthaship: "Eastern Medicine House Call" Episode 12 - BEYONDreality
In need of some rest and relaxation, Drea invites a holistic healer to the house to try acupuncture and cupping for the first time. Subscribe to BEYONDreality for more of The Muthaship! http://bit...

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Education Chronicle | Its All About Education Matters

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Its a delighting experience for that school to unveil in the conventional administration model towards the online platform. Exciting because it sounds, however, many schools literally fuels out when the school store is ready to go. Transition in the existing maintenance methodology to some greater altitude should be performed with ample care. The school must address the educator, student and also the parents concerning the change. This eliminates resistance towards change and frustrations in making use of the school store.

After tactically coping with the bulletins and comments the school must conduct requirement meeting as what particulars should be obtainable in the school store. Only at that juncture, its smart to incorporate representative all usage community for example students, parents and teachers. Evaluate the final results from the meeting and make preparations a wish list or even the key necessities.

The main objective would be to spotlight the school background and accomplishments in order to attract prospective students. The school store should be easy to use and simply navigable. Many tech savvy schools choose complex software with a lot of programs ultimately confusing the customers. The school must clearly identify its scope.

Internet-based School Store offers unmatched Energy, Integration, Ease-of-Use and Cost to colleges around the globe. Having a global footprint of computer systems in each and every area, its very essential to move as time passes. As a result it is imperative for each school large or promising small to have centralized store.

A Web-based School Store is really a compact package that is particularly made to cover every aspect of school management. Using its sophisticated and condition from the art web technology, it is aimed at supplying the best hierarchical structure and quality in mastering management. It mainly concentrates on synchronization between School administration including all departments and students. School Management System could be placed on Internal server or server to be used through network of multiple computer systems. It offers integrated details about the interaction of school managers and students. Probably the most noticeable options that come with Online School Management System are versatility, robust character and scalability. It allows online fee transaction feature which allow school to consider payment and students to pay for fee without needing to be worried about lengthy queues. It produces customers login each and every level with different access privileges. It produces seamless connectivity with highly privacy and security features. This online option would be targeted at supplying a quick and efficient platform to have interaction with one another.

Schools typically dont have lots of occasions that will require a 3rd party event venue for hosting, however devices, festivals, and events might be located in elegant ballrooms and banquet halls in Houston and can give these school functions a far more professional atmosphere. School dances wont have to become located on school gymnasium flooring, along with a celebration for example graduation may have all of the pomp and circumstance it warrants. Event venues in Houston arent any other people towards the unique needs of hosting school occasions.

You will find a lot of reasons a school would decide to host a celebration off school grounds. Probably the most important factors schools face when determining with an event venue in Houston for hosting their function is space. While schools must have the area for his or her students, when chaperones or parents are considered in, event space could be confined. Banquet halls and ballrooms in Houston will normally have the area and supplies needed for hosting a effective school related event. Additionally, the area at event venues in Houston is most likely more event appropriate compared to space the school may use for hosting the big event. More compact schools might possibly not have a appropriate space sufficiently small to have an event.

For those who have been successful to get a job interview at medical school, youre clearly well in order to achieving the ideal. However, although youve clearly offered yourself well in writing, the truly effort is just just beginning. Medical school interview questions are infamously hard, and therefore, a little of planning is needed.

The very first factor to learn about medical school interview questions is they are positioned to obtain the best solutions in the best candidates. Although a job interview panel is going to be searching for key phrases and words you will find no wrong or right solutions.

Each school may have its very own method of doing things obviously, but certain questions, (or certainly versions on the theme), appear every year. Here are a couple of of the very most likely along with a little advice regarding how you can tailor your response.

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Education Chronicle | Its All About Education Matters

Students taking MCAT in April will have a broader, longer exam

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Students taking MCAT in April will have a broader, longer exam

BY GRACE PATERAS | FEBRUARY 17, 2015 5:00 AM

The new MCAT will have local medical-school hopefuls taking a test for nearly eight hours beginning in April.

The Medical College Admissions Test is a national exam that the Association of American Medical Colleges issues for students wanting to go into med school.

Some students, such as University of Iowa junior Collin Thatcher, said classes in undergraduate school will help on the MCAT.

[MCAT is] a comprehensive overview of my entire college career, he said. My classes all will help.

The test has undergone its first content modification since 1991, and the medical-school association is confident the changes will improve tomorrows physicians.

The new test, which will first be issued on April 17, will no longer feature the writing portion.

Instead, biochemistry, psychology, and sociology sections will be included on the test.

The test will take seven and a half hours, which includes an hour and a half of breaks between tests and an additional lunch break. The new exam is around two and a half hours longer than the old test.

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Students taking MCAT in April will have a broader, longer exam

Home Sweet Home In Liberty City (Grand Theft Auto III) W/TripletheTDog #4 – Video

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Home Sweet Home In Liberty City (Grand Theft Auto III) W/TripletheTDog #4
Nothing like living in the sweet city of Liberty City what could happen it such an amazing city such as this? You #39;ve been betrayed and left for dead. Now you #39;re taking revenge, unless the...

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2010 SUBARU LIBERTY Ryde, Sydney, New South Wales, Top Ryde, Australia 270022 – Video

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2010 SUBARU LIBERTY Ryde, Sydney, New South Wales, Top Ryde, Australia 270022
2010 SUBARU LIBERTY http://www.northshoremitsubishi.com.au/index.php/vehicle-search Servicing Ryde near Sydney, New South Wales, Top Ryde, Australia 2010 SUBARU LIBERTY ...

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2010 SUBARU LIBERTY Ryde, Sydney, New South Wales, Top Ryde, Australia 270022 - Video