نتایج جستجو برای: nano patterning
تعداد نتایج: 69492 فیلتر نتایج به سال:
Nanolithography is the key technology driving technological progress in electronics, photonics, information technology and biotechnology. The tools and techniques used in the semiconductor industry have become too expensive for applications other than high-volume manufacturing. Masks, which are required for each unique design, can cost tens of thousands of dollars per layer. This economic const...
GaAs nanowires are grown by molecular beam epitaxy using a self-catalyzed, Ga-assisted growth technique. Position control is achieved by nano-patterning a SiO(2) layer with arrays of holes with a hole diameter of 85 nm and a hole pitch varying between 200 nm and 2 µm. Gallium droplets form preferentially at the etched holes acting as catalyst for the nanowire growth. The nanowires have hexagona...
Rapid adaptive camouflage is the primary defense of soft-bodied cuttlefish. Previous studies have shown that cuttlefish body patterns are strongly influenced by visual edges in the substrate. The aim of the present study was to examine how cuttlefish body patterning is differentially controlled by various aspects of edges, including contrast polarity, contrast strength, and the presence or abse...
Repression of translation of oskar and nanos mRNAs prior to their posterior localization in the egg and embryo is essential for body patterning in Drosophila. The Cup protein is now found to have an important role in repression of both mRNAs, and apparently does so in a manner similar to the action of the Xenopus Maskin protein.
طراحی و سنتز پلیمر های کئوردینانسیونی متخلخل یا چارچوب های فلز- آلی به علت ساختارهای جالب این ترکیبات و قابلیت های کاربردی آنها برای ذخیره و جداسازی گاز، کاتالیز، تشخیص و جداسازی انانتیومرها، خواص مغناطیسی، تنظیم لومینسانس و غیره توجه زیادی را به خود جلب کرده است. اخیرا مشخص شده است که برخی لیگاندهای آلی مسطح صلب مثل ایمیدازول-5،4-دی کربوکسیلیک اسید (h3idc) برای تشکیل چارچوب های فلز- آلی مناسب ...
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