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Microfluidic cytometers with integrated on-chip optical systems for red blood cell and platelet counting

機(jī)譯:具有集成的光學(xué)系統(tǒng)的微流式細(xì)胞儀用于紅細(xì)胞和血小板計(jì)數(shù)

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摘要

A microfluidic cytometer with integrated on-chip optical systems was designed for red blood cell (RBC) and platelet (PLT) counting. The design, fabrication, and characterization of the microfluidic cytometer with on-chip optical signal detection were described. With process using only a single mask, the device that integrates optical fibers and on-chip microlens with microfluidic channels on a polydimethylsiloxane layer by standard soft photolithography. This compact structure increased the sensitivity of the device and eliminated time-consuming free-space optical alignments. The microfluidic cytometer was used to count red blood cells and platelets. Forward scatter and extinction were collected simultaneously for each cell. Experimental results indicated that the microfluidic cytometer exhibited comparable performance with a conventional cytometer and demonstrated superior capacity to detect on-chip optical signals in a highly compact, simple, truly portable, and low-cost format that is well suitable for point-of-care clinical diagnostics.
機(jī)譯:具有集成的片上光學(xué)系統(tǒng)的微流式細(xì)胞儀被設(shè)計(jì)用于紅細(xì)胞(RBC)和血小板(PLT)計(jì)數(shù)。描述了具有芯片上光學(xué)信號(hào)檢測(cè)的微流式細(xì)胞儀的設(shè)計(jì),制造和表征。通過(guò)僅使用單個(gè)掩模的工藝,該設(shè)備即可通過(guò)標(biāo)準(zhǔn)的軟光刻技術(shù)在聚二甲基硅氧烷層上將光纖和芯片上的微透鏡與微流體通道集成在一起。這種緊湊的結(jié)構(gòu)提高了設(shè)備??的靈敏度,并消除了耗時(shí)的自由空間光學(xué)對(duì)準(zhǔn)。微流式細(xì)胞儀用于計(jì)數(shù)紅細(xì)胞和血小板。同時(shí)收集每個(gè)細(xì)胞的前向散射和消光。實(shí)驗(yàn)結(jié)果表明,微流式細(xì)胞儀表現(xiàn)出與常規(guī)細(xì)胞儀相當(dāng)?shù)男阅?,并顯示出以高度緊湊,簡(jiǎn)單,真正便攜且低成本的格式檢測(cè)芯片上光信號(hào)的出色能力,非常適合即時(shí)護(hù)理臨床診斷。

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