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تسجيل مستخدم جديدOptical sorting and detection of sub-micron objects in a motional standing wave
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نشر من قبل
Tom\\'a\\v{s} \\v{C}i\\v{z}m\\'ar
تاريخ النشر
2005
مجال البحث
فيزياء
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English
تأليف
Tomas Cizmar
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An extended interference pattern close to surface may result in both a transmissive or evanescent surface fields for large area manipulation of trapped particles. The affinity of differing particle sizes to a moving standing wave light pattern allows us to hold and deliver them in a bi-directional manner and importantly demonstrate experimentally particle sorting in the sub-micron region. This is performed without the need of fluid flow (static sorting). Theoretical calculations experimentally confirm that certain sizes of colloidal particles thermally hop more easily between neighboring traps. A new generic method is also presented for particle position detection in an extended periodic light pattern and applied to characterization of optical traps and particle behavior
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