Piezoelectric filter wafer
Slice and polish an oriented lithium tantalate crystal into a selected SAW substrate Discovery hypothesis; target capability is unverified.
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 |
|---|---|---|---|
| Lithium tantalate crystal | Part | incorporated or consumed; allocation not yet specified | Cycle-checked; compatibility unknown |
| Wafer preparation equipment | Tool | reused equipment | Cycle-checked; compatibility unknown |
| Cleaning equipment | Tool | reused equipment | Cycle-checked; compatibility unknown |
| Optical instruments | Tool | reused equipment | Cycle-checked; compatibility unknown |
| Analytical instruments | Tool | reused equipment | Cycle-checked; compatibility unknown |
| Cleanroom | Tool | reused equipment | Cycle-checked; compatibility unknown |
Making outline
- Slice and polish an oriented lithium tantalate crystal into a selected SAW substrate
- Develop a bounded process specification and establish earlier availability of every listed physical prerequisite.
- Make trial pieces, measure interfaces and performance with independently established references, and reject incompatible outputs.
What remains unresolved
- Discovery hypothesis only: quantitative demands, full recipe, quantities, losses, compatibility and acceptance remain to be researched.
Earlier research provenance
- proposals/2026-10-08-discovery/electronics/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 → Main board → Board passives → Radio filters and duplexers → Radio acoustic filter die → Patterned SAW wafer → Piezoelectric filter wafer
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