Question
Topological insulators conduct in these regions via a "correspondence" co-named for them. For 10 points each:
[10m] Name these regions whose namesake "conditions" are exemplified by the no-slip condition and the requirement that the wavefunction outside of a material equals zero.
ANSWER: boundaries [accept surfaces or edges or borders]
[10h] This technique uses "tapping" and "contact" modes to map the surface of a material by running a piezoelectric tip at the end of a cantilever over the surface and measuring the tip's deflection.
ANSWER: atomic force microscopy [or AFM; prompt on microscopy]
[10e] Band bending occurs at the edges of p-type and n-type semiconductors when they are joined in the "bipolar junction" type of these small switches found on microchips.
ANSWER: transistors [accept bipolar junction transistors; prompt on BJTs]
<Science - Physics>
Data
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total |
|---|---|---|---|---|---|
| Adlai E. Stevenson A | Belmont | 0 | 10 | 10 | 20 |
| Alabama Cyber Tech | Thomas Jefferson A | 10 | 0 | 10 | 20 |
| Audrain County AT | Lambert A | 0 | 0 | 0 | 0 |
| Eastchester | Richard Montgomery | 0 | 0 | 0 | 0 |
| Fremd | Strake Jesuit B | 0 | 0 | 10 | 10 |
| Hunter A | Detroit Catholic Central A | 10 | 0 | 10 | 20 |
| Innovation Academy A | Uni of Illinois Laboratory | 10 | 0 | 10 | 20 |
| Lexington | Strake Jesuit A | 10 | 10 | 10 | 30 |
| Montgomery Blair A | Northview | 10 | 10 | 10 | 30 |
| Northmont | Johns Creek | 0 | 10 | 10 | 20 |
| Walter Payton A | Hinsdale Central A | 0 | 0 | 0 | 0 |
| Westwood | Lindbergh | 10 | 0 | 10 | 20 |
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2025 PACE NSC | 06/07/2025 | Y | 12 | 15.83 | 75% | 50% | 33% |