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>
Summary
| 2024 ARCADIA at BU | 2024-12-06 | Y | 5 | 12.00 | 100% | 20% | 0% |
| 2024 ARCADIA at Duke | 2024-12-06 | Y | 3 | 10.00 | 100% | 0% | 0% |
| 2024 ARCADIA at Missouri S&T | 2024-12-06 | Y | 2 | 20.00 | 100% | 50% | 50% |
| 2024 ARCADIA Online | 2025-05-17 | Y | 4 | 17.50 | 100% | 50% | 25% |
| 2024 ARCADIA at Penn State | 2024-12-06 | Y | 2 | 20.00 | 100% | 100% | 0% |
| 2024 ARCADIA at Florida Tech | 2024-12-06 | Y | 4 | 7.50 | 75% | 0% | 0% |
| 2024 ARCADIA at UC Berkeley | 2024-12-06 | Y | 2 | 25.00 | 100% | 100% | 50% |
| 2024 ARCADIA at Waterloo | 2024-11-09 | Y | 6 | 15.00 | 100% | 17% | 33% |
| 2024 ARCADIA at GT | 2024-12-06 | Y | 4 | 7.50 | 75% | 0% | 0% |
| 2024 ARCADIA at Illinois | 2024-11-09 | Y | 4 | 17.50 | 100% | 25% | 50% |
| 2024 ARCADIA at Warwick | 2024-12-06 | Y | 5 | 10.00 | 80% | 0% | 20% |
| 2024 ARCADIA at Claremont | 2024-11-02 | Y | 3 | 16.67 | 100% | 67% | 0% |
Data
| Berkeley A | Berkeley B | 10 | 0 | 10 | 20 |
| Stanford | Berkeley Past | 10 | 10 | 10 | 30 |