Cholesteryl ester liquid crystals were discovered with a new application in sensing traction forces of single cells. The liquid crystal bio-transducer is produced by manual scraping of liquid crystals onto the petri d...
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ISBN:
(纸本)9783037859339
Cholesteryl ester liquid crystals were discovered with a new application in sensing traction forces of single cells. The liquid crystal bio-transducer is produced by manual scraping of liquid crystals onto the petri dish, in which the technique is highly subjective to the skill of the user to produce homogeneously spread liquid crystal substrates. This paper describes the development of an apparatus used to produce a liquid crystal substrate using squeegee coating technique. It consists of a biaxial mechatronic system which is synchronously controlled in vertical and horizontal directions scraping the liquid crystal substrates evenly on the surface of a petri dish. The thickness of the liquid crystal was profiled using laser diffraction technique and the homogeneity of the liquid crystal films produced was examined in a crossed-polarizing microscope. At an angular speed of 1500 rpm and under a shear stress of 1.46 +/- 0.72 kPa, the squeegee coating was found producing liquid crystal films at a thickness of 132 +/- 23 mu m on the surface of petri dishes. With the application of this apparatus, evenly spread liquid crystal coatings with control thickness in petri dishes were consistently produced. This has overcome the major problem of manually coating the liquid crystal substrates using a cell scraper.
The quick, easy way to leap into the fascinating world of physical computing This is no ordinary circuit board. arduino allows anyone, whether you're an artist, designer, programmer or hobbyist, to learn about and...
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ISBN:
(数字)9781118446423
ISBN:
(纸本)9781118446379
The quick, easy way to leap into the fascinating world of physical computing This is no ordinary circuit board. arduino allows anyone, whether you're an artist, designer, programmer or hobbyist, to learn about and play with electronics. Through this book you learn how to build a variety of circuits that can sense or control things in the real world. Maybe you'll prototype your own product or create a piece of interactive artwork? This book equips you with everything you'll need to build your own arduino project, but what you make is up to you! If you're ready to bring your ideas into the real world or are curious about the possibilities, this book is for you. ? Learn by doing ? start building circuits and programming your arduino with a few easy to follow examples - right away! ? Easy does it ? work through arduino sketches line by line in plain English, to learn of how a they work and how to write your own ? Solder on! ? Only ever used a breadboard in the kitchen? Don't know your soldering iron from a curling iron? No problem, you'll be prototyping in no time ? Kitted out ? discover new and interesting hardware to make your arduino into anything from a mobile phone to a geiger counter! ? Become an arduino savant ? learn all about functions, arrays, libraries, shields and other tools of the trade to take your arduino project to the next level. ? Get social ? teach your arduino to communicate with software running on a computer to link the physical world with the virtual world It's hardware, it's software, it's fun! Start building the next cool gizmo with arduino and arduino For Dummies.
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