کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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832101 | 908115 | 2010 | 6 صفحه PDF | دانلود رایگان |
The recoverable strain of shape-memory polymers (SMPs) is an order higher than their metal counterpart, i.e., shape-memory alloys. The recent finding of the influence of moisture on the glass transition temperature of a polyurethane SMP, which is traditionally known for its thermo-responsive nature, enables us to realize not only water-driven for shape recovery, but also recovery following a pre-determined sequence. Utilizing these features of this SMP, we propose the concept of delivering a tiny device which is made of this material into a pore through a very small hole. The feasibility of the concept is demonstrated experimentally. This concept could eventually be used to deliver a micro/nano device into living cells for surgery or operation inside of them.
Journal: Materials & Design (1980-2015) - Volume 31, Issue 5, May 2010, Pages 2684–2689