Sensor cap wafer
Pattern and etch silicon cap recesses with clearance over moving structures; diced caps later receive the selected frit sealing ring Discovery hypothesis; acceptance remains open.
Discovered · unresearchedClosure: OpenInventory incomplete
Capability requirements and tolerances
Consumer-specific numerical targets, quantities and acceptance limits remain open or incompletely reviewed. No smartphone-grade suitability is claimed. Distinct capability tiers require their own making route and qualification.
Making steps · draft selected for navigation; not a validated fabrication specification.
Known Parts and Tools
The selected route supplies this page's inventory and the map's dependency links from one record. Further requirements may be missing; review flags do not prove physical suitability.
| Requirement | Role | Use | Relationship status |
|---|---|---|---|
| Silicon wafer | Part | incorporated or consumed; allocation remains open | Cycle-checked; compatibility unknown |
| Exposure equipment | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Reticle/master pattern | Part | incorporated or consumed; allocation remains open | Cycle-checked; compatibility unknown |
| Photoresist | Part | incorporated or consumed; allocation remains open | Cycle-checked; compatibility unknown |
| Photoresist developer | Part | incorporated or consumed; allocation remains open | Cycle-checked; compatibility unknown |
| Etching equipment | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Etch process gases | Part | incorporated or consumed; allocation remains open | Cycle-checked; compatibility unknown |
| Cleaning equipment | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Pure water | Part | incorporated or consumed; allocation remains open | Cycle-checked; compatibility unknown |
| Cleanroom | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Optical instruments | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Regulated power | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Cooling systems | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Handling assembly | Tool | incorporated or consumed; allocation remains open | Cycle-checked; compatibility unknown |
| Ventilation | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
Unselected candidate inventories · 1
These records expose known requirements and alternative or blocked hypotheses. They add no manufacturing links or selected discovery depth.
Pattern and etch a silicon cavity cap; sealing material, atmospheric composition and hermetic acceptance remain unknown
Pattern and etch a silicon cavity cap; sealing material, atmospheric composition and hermetic acceptance remain unknown
- Silicon wafer · part
- Exposure equipment · tool
- Reticle/master pattern · part
- Photoresist · part
- Etching equipment · tool
- Cleaning equipment · tool
- Pure water · part
- Cleanroom · tool
- Optical instruments · tool
- Photoresist developer · part
Complete inventory, selected process and compatible quantitative capability remain open.
Making outline
- Pattern and etch silicon cap recesses with clearance over moving structures; diced caps later receive the selected frit sealing ring
- Build or acquire each explicit earlier physical input; establish independent references and interfaces.
- Make trials and accept only against the eventual caller specification; record uncertainty and rejected outputs.
What remains unresolved
- Discovery hypothesis only: quantitative demands, full recipe, quantities, losses, compatibility and acceptance remain to be researched.
- Full inventory, required quantities, process settings, numerical demand and suitability remain open.
Sources and leads
Source scope and research notes determine which claims have been checked. A URL does not establish a complete making route.
Earlier research provenance
- proposals/2026-10-08-discovery/electronics/report.md
- proposals/2026-10-08-discovery/electronics/frontier-report.md
Used by
Items that directly require this item in their selected inventory.
Paths from Smartphone
These routes together include every item that can lead from Smartphone to this item. Repeated path combinations are collapsed; recipes are omitted.
Shortest route: Smartphone → Audio system → Microphone → Sensor cap wafer
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