کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5449864 1512538 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A fast processing route of aspheric polydimethylsiloxane lenses array (APLA) and optical characterization for smartphone microscopy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
A fast processing route of aspheric polydimethylsiloxane lenses array (APLA) and optical characterization for smartphone microscopy
چکیده انگلیسی


- The fabrication time can be dramatically reduced to ~30 s.
- A fast processing route of aspheric polydimethylsiloxane lenses array (APLA) was developed for smartphone microscopy.
- 4 types of APLA were fabricated with focal lengths in the range of 7.03 mm, and 4.43 mm.
- An ordinary commercial smartphone camera can be easily transformed to a low-cost, portable digital microscopy (50×magnification).

A fast processing route of aspheric polydimethylsiloxane (PDMS) lenses array (APLA) is proposed via the combined effect of inverted gravitational and heat-assisted forces. The fabrication time can be dramatically reduced to ~30 s, compared favorably to the traditional duration of ~2 hours of repeated cycles of addition-curing processes. In this paper, a low-cost flexible lens can be fabricated by repeatedly depositing, inverting, curing a hanging transparent PDMS elastomer droplet on a previously deposited curved structure. Complex structures with aspheric curve features and various focal lengths can be successfully produced and the fabricated 4 types of APLA have various focal lengths in the range of 7.03 mm, 6.00 mm, 5.33 mm, and 4.43 mm, respectively. Empirically, a direct relationship between the PDMS volume and focal lengths of the lenses can be experimentally deducted. Using these fabricated APLA, an ordinary commercial smartphone camera can be easily transformed to a low-cost, portable digital microscopy (50×magnification) such that point of care diagnostic can be implemented pervasively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 385, 15 February 2017, Pages 160-166
نویسندگان
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