Question

PDMS has overtaken silicon and glass as the choice material in this field due to its ease of patterning by soft lithography. For 10 points each:
[10m] Name this field, which designs devices that transport very small quantities of liquid in tiny channels via capillary action. Those devices can sort cells, do precision chemical analysis, and diagnose diseases.
ANSWER: microfluidics [accept microfluidic devices or microfluidic chips]
[10h] Two answers required. PDMS is the representative member of a class of viscoelastic polymers whose backbone consists of these two heteroatoms. Those polymers are used industrially as lubricants and as gels in medical implants.
ANSWER: silicon AND oxygen [or Si AND O]
[10e] The relative cost of PDMS fabrication has led the Whitesides group to develop cheap microfluidic devices made of this material for health diagnostics in areas without lab infrastructure. This material consists of wood pulp pressed into sheets.
ANSWER: paper [accept paper-based microfluidics]
<VD, Chemistry>

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Penn StateMaryland1001020
RITPitt1001020