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SASemiAgoraSemiconductor knowledge & engineeringRun v111 lab

TOUCH LABS

Pick one knob.
See what moves.

Start with the six-family etch-depth atlas: choose HAR, ALE, selective etch, DRIE, strip and ash, or wet etch, then load one validated CSV and keep profile, selectivity, transport, mask, residue, metrology, role, and replacement-evidence boundaries visible. Continue into RIE mechanism, vacuum and gas delivery, plasma source and sheath state, particle Monte Carlo topography, process-device-yield integration, metrology, devices, memory, circuits, reliability, and verification.

Device / Modeling / EvidenceDevice modeling & normalization workbench9 metric contracts / 27 fixtures / 10 refusals / 12 sourcesMemory / SRAM / VariabilitySRAM variation and corner coverage2400 synthetic rows / 8 fixtures / 8 sourcesProcess / Metrology / VariabilityLER/LWR variability lab256 synthetic samples / 8 fixtures / 6 sourcesProcess / Equipment / MetrologyEtch depth and selectivity evidence atlas41472 rows / 20736 physical configurations / 120 sourcesIntegration / YieldProcess-device-yield integration evidence map5760 rows / 2880 physical configurations / 20 sourcesProcess / EquipmentReactive-ion etch mechanism evidence map6912 rows / 3456 physical configurations / 18 sourcesEquipment / ProcessVacuum and gas-delivery inventory evidence map10368 rows / 5184 physical configurations / 14 sourcesEquipment / ProcessCCP versus ICP chamber-state evidence map6144 rows / 3072 physical configurations / 14 sourcesProcess / EquipmentParticle Monte Carlo feature topography evidence map6144 rows / 192 physical configurations / 8 sourcesSensor / MetrologyThermoelectric temperature-sensor calibration evidence map6144 rows / 384 configurations / 7 nodesDevice / Metrology2D heterojunction NDR evidence map6144 rows / 192 sweep pairs / 9 nodesMemory / DeviceM3D Si/oxide-semiconductor SRAM evidence ladder6144 deterministic rows / 9 nodesSensor / MetrologySuperconducting photon-detector evidence map5184 deterministic rows / 6 nodesRF DeviceRF S-parameter and de-embedding evidence replay6048 deterministic rows / 5 nodesPhotonicsSemiconductor photonics causal chain4536 deterministic rows / 5 nodesDeviceCFET contact/interconnect parasitic map1728 CFET rowsDeviceMOSFET, FinFET, GAAFET, and CFET architecture comparison4096 comparison rowsLayoutCTS, routing, and IR-drop report handoff4096 handoff rowsLayoutOpen-silicon model-to-measurement evidence4096 evidence rows / 0 real measurementsMetrologyGauge R&R and measurement-system analysis4096 measurement-system rows / 15 gatesMemoryHBM base-die partition map1296 HBM partition rowsMetrologySmall-data virtual metrology replay2880 VM decision rowsProcessPlasma etch UQ surrogate replay27 heteroscedastic UQ rowsLayoutPhysical verification evidence ladder192 PV checkpoint rowsMemoryMRAM fundamentals replay18 MRAM triangle rowsPackagingHybrid bonding mechanical readiness27 readiness rowsMemorySRAM dynamic write boundary24 SKY130 transientsMemoryDRAM HBM emerging memory replay18 memory/eNVM cardsDeviceAdvanced device architecture2 advanced-device cardsDigitalDigital timing primitives1 timing primitive cardMemorySRAM memory depth replay5 memory-depth cardsMemorySRAM column MUX and I/O replay864 verified ngspice rowsMemory6T SRAM read operation3 SKY130 transientsMemoryStatic noise marginngspice datasetDigitalSRAM timing and controllerCross-checked RTLDigitalMarch C- SRAM BISTExecuted RTLDigitalSECDED memory ECC92 executed casesMemoryDifferential bitline sensingExecuted ngspiceMemoryDRAM retention and refreshExecuted ngspice

REPRODUCIBLE LABS

Change one condition.
Trace every consequence.

Models are labeled by fidelity. Every result exposes its assumptions, execution method, validation state, and downloadable evidence.

Integration / Memory / EvidenceLive

Emerging device, memory & integration atlas

MRAM, FeFET/HZO, IGZO, 2D CFET, p-GaN contacts, GaN HEMT, and 3D integration across five disjoint evidence dimensions, held gates, contradictions, and replacement slots

7 topics / 35 cells / 42 link-only sources / 66 fixturesOpen lab ->
Device / Modeling / EvidenceLive

Device modeling & normalization workbench

Planar, fin, and nanosheet geometry; total and width-normalized Ioff; gm/Id operating conditions; synthetic TLM; contact drop; residual splits; corner versus Monte Carlo; and five disjoint SPICE layers

9 metric contracts / 27 fixtures / 10 refusals / 12 sourcesOpen lab ->
Metrology / Variability / UQLive

Variability, metrology & UQ workbench

Eight same-contract uncertainty budgets across LER/LWR, PSD, aperture, finite sampling, SRAM hierarchy, plasma etch, Gauge R&R, and hybrid bonding with explicit refusal states

8 cases / 32 components / 26 fixtures / 15 sourcesOpen lab ->
Circuit / Numerical evidenceLive

SPICE convergence evidence

Compare solver, numerical, model, metric, and signoff states across timestep, tolerance, initial-condition, saved-signal, and measurement-definition cases without treating convergence as validity

9 precomputed cases / 3 metric contracts / 8 sourcesOpen lab ->
Memory / SRAM / VariabilityLive

SRAM variation and corner coverage

Known-ground-truth condition, lot, wafer, site, and replicate hierarchy with covariance-aware variance closure, missingness coverage, uncertainty denominators, and fixed-condition boundaries

2400 synthetic rows / 8 fixtures / 8 sourcesOpen lab ->
Process / Metrology / VariabilityLive

LER/LWR variability lab

Seeded paired edge traces, exact left-right correlation, extraction bandwidth, local-CD aperture, histogram conservation, and bounded device-to-SRAM sensitivity proxies

256 synthetic samples / 8 fixtures / 6 sourcesOpen lab ->
Process / Equipment / MetrologyLive

Etch depth and selectivity evidence atlas

Choose HAR, ALE, selective etch, DRIE, strip and ash, or wet etch; load one validated family CSV; inspect profile, selectivity, residue, surface, metrology, exact-ledger, and role-gate evidence

41472 rows / 20736 physical configurations / 120 sourcesOpen lab ->
Integration / YieldLive

Process-device-yield integration evidence map

Variation families, device and circuit evidence, reliability and yield context, genealogy, four role views, three exact ledgers, upstream packet postures, and the v120 human-review gate

5760 rows / 2880 physical configurations / 20 sourcesOpen lab ->
Process / EquipmentLive

Reactive-ion etch mechanism evidence map

Ion drive, neutral reactivity, passivation, directionality, mask resilience, feature access, six mechanism regimes, exact ledgers, role gates, and the bounded feature-profile handoff

6912 rows / 3456 physical configurations / 18 sourcesOpen lab ->
Equipment / ProcessLive

Vacuum and gas-delivery inventory evidence map

Flow-model regime, admitted load, wall release, conductance, nominal and effective pumping, chamber and foreline inventory, settling, distribution, exact ledgers, role gates, and the bounded plasma handoff

10368 rows / 5184 physical configurations / 14 sourcesOpen lab ->
Equipment / ProcessLive

CCP versus ICP chamber-state evidence map

Bounded architecture, drive, pressure, bias, gas response, wall loss, matching, sheath, ion/neutral delivery, energy-angle breadth, radial state, exact ledgers, role gates, feature bridge, and replacement evidence

6144 rows / 3072 physical configurations / 14 sourcesOpen lab ->
Process / EquipmentLive

Particle Monte Carlo feature topography evidence map

Directional RIE and sputter deposition across source, species, surface, reflection, secondary transport, exact geometry, conservation, role views, and replacement gates

6144 rows / 192 physical configurations / 8 sourcesOpen lab ->
Sensor / MetrologyLive

Thermoelectric temperature-sensor calibration evidence map

Series-junction scaling, reference-junction correction, drift, mechanical hysteresis, cross-sensitivity, residual, uncertainty, traceability, and replacement gates

Device / MetrologyLive

2D heterojunction NDR evidence map

Bias, gate state, band alignment, broadening, background transport, contact pressure, sweep direction, trap memory, and stable negative-slope evidence gates

DeviceLive

PN junction bias

Potential, carriers, and solved current-voltage response

DeviceLive

2D MOSFET transfer

Gate control, two drain biases, current, and solved surface inversion

DeviceLive

MOS capacitor C-V

Gate bias, surface carriers, quasi-static C-V, and high-frequency boundary

DeviceLive

Advanced device architecture

FinFET fin-count PPA, GAA nanosheet electrostatics, and variability boundaries

DeviceLive

CFET contact/interconnect parasitic map

Stacked n/p devices, MOL contacts, vias, local interconnect, thermal coupling, delay, energy, and integration risk

Power DeviceLive

GaN-on-SiC HEMT substrate chain

Semi-insulating SiC, GaN buffer traps, HEMT mode, package thermal path, dynamic Ron, and reliability gates

Power DeviceLive

GaN dynamic-Ron and trap-memory replay

Stress class, drain bias, recovery window, trap memory, current collapse, thermal risk, and method caution

DeviceLive

TCAD DOE and surrogate optimization replay

Device context, design lever, DOE plan, surrogate uncertainty, extrapolation risk, mesh stability, calibration anchor, and decision gate

DeviceLive

MOSFET, FinFET, GAAFET, and CFET architecture comparison

Electrostatic control, footprint, contacts, capacitance, variability, thermal coupling, integration risk, evidence maturity, and circuit handoff

RF DeviceLive

RF S-parameter and de-embedding evidence replay

Complex intrinsic and fixture-embedded S-parameters, reference impedance, correction classes, residual error, fixture passivity, linear stability, fT/fmax, RF noise, and replacement evidence

PhotonicsLive

Semiconductor photonics causal chain

Photon energy, LED and laser boundaries, ideal detector responsivity, all-pass ring transfer, MZI phase, and replacement-evidence gates

Sensor / MetrologyLive

Superconducting photon-detector evidence map

Geometry, normalized current distribution, edge and constriction state, photon or dark context, mechanism ambiguity, timing/radiometry lineage, uncertainty, and replacement gates

Memory / DeviceLive

M3D Si/oxide-semiconductor SRAM evidence ladder

Tier assignment, oxide access transport, contacts, inter-tier links, WL/BL loading, thermal budget, extraction maturity, cell/subarray sensitivities, contradictions, and replacement evidence

CircuitLive

CMOS inverter transfer

Input, output, gain, and sampled noise margins

CircuitLive

Ring oscillator

Stage count, capacitive load, frequency, delay, and switching power

CircuitLive

Analog circuit primitives

Current mirror compliance, output resistance, sense regeneration, and decision margin

DigitalLive

Digital timing primitives

FO4 delay, VDD, temperature, energy, leakage, and EDP timing vocabulary

MemoryLive

6T SRAM read operation

Precharge, wordline, differential bitlines, read disturb, and load-dependent delay

MemoryLive

Static noise margin

Butterfly curve, maximum square, and hold/read comparison

MemoryLive

SRAM dynamic write boundary

Wordline amplitude, cell-VDD assist, pass/fail shmoo, and write waveform

MemoryLive

SRAM column MUX and I/O replay

Mux ratio, shared sense load, transfer efficiency, write off-state, and output timing

MemoryLive

SRAM memory depth replay

Sense margin, column I/O, read-disturb sizing, assist taxonomy, and cache behavior evidence layers

MemoryLive

DRAM HBM emerging memory replay

DRAM/HBM bank behavior, retention, RowHammer, NAND, 3D NAND, PCM, ReRAM, FeFET, MRAM, hierarchy, and CIM tradeoffs

MemoryLive

HBM base-die partition map

DRAM stack, base die, TSV, interposer, PHY, controller, thermal, bandwidth, capacity, and yield tradeoffs

MemoryLive

DRAM refresh, RowHammer, and ECC guardband

Retention tails, temperature, refresh tax, activation pressure, ECC/scrub coverage, thermal stress, residual risk, and next evidence checks

MemoryLive

Emerging memory placement and reliability map

SRAM, DRAM, HBM, NAND, MRAM, FeFET, ReRAM, PCM, SCM, embedded NVM, eDRAM, and CIM placement evidence

MemoryLive

MRAM fundamentals replay

Switch probability, write energy, read margin, retention proxy, and disturb risk

LayoutLive

SKY130 physical verification

Actual GDS layers, DRC, LVS, PEX, and pre/post timing

LayoutLive

Physical verification evidence ladder

DRC/LVS/PEX/timing checkpoints, evidence confidence, fix-risk proxy, and safe evidence checks

LayoutLive

Layout RC delay evidence ladder

Wire length, layer class, route style, fanout load, checkpoint stage, RC, slew, and slack-risk proxies

LayoutLive

Floorplan congestion, IR-drop, and clock spine

Utilization, macro channels, PDN strategy, routing congestion, IR-drop, CTS pressure, skew, and timing-risk gates

LayoutLive

Standard-cell delay, area, and pin-cap reports

Drive strength, input slew, output load, pin cap, setup/hold slack, max-cap/slew risk, and report-stage evidence

LayoutLive

CTS, routing, and IR-drop report handoff

Clock skew/latency, route overflow/completion, extracted RC, IR/current-density pressure, report mismatch, replacement slots, and owner review

LayoutLive

Open-silicon model-to-measurement evidence

Model assumptions, characterization, routed reports, test structures, measurement state, discrepancy, uncertainty, provenance, and claim maturity

MetrologyLive

Gauge R&R and measurement-system analysis

Crossed/nested design, part spread, repeatability, operator/tool/interaction reproducibility, bias, linearity, stability, resolution, uncertainty, and discrimination

ProcessLive

Thin-film deposition replay

Sputter uniformity, PVD step coverage, evaporation line-of-sight, and ALD growth-per-cycle saturation

ProcessLive

Process fundamentals replay

Oxidation, lithography, plasma etch UQ, CMP, implant, and anneal evidence cards

ProcessLive

Plasma etch UQ surrogate replay

Wafer zone, changing uncertainty, CD bias, selectivity, and optimizer caution

ProcessLive

Process metrology replay

Ellipsometry, sheet resistance, TLM, CD/overlay, SPC, DOE, and lithography-to-etch feedforward evidence cards

MetrologyLive

Small-data virtual metrology replay

Sparse physical metrology, model uncertainty, drift, guardband, Cpk proxy, escape risk, and sample-more decisions

ProcessLive

APC, FDC, and feedforward decision replay

Signal quality, FDC state, VM uncertainty, sampling coverage, feedforward handoff, false-alarm risk, wafer-at-risk, and role review

ProcessLive

Surface treatment replay

O2 plasma, O3 ozone, contact angle, residue proxy, and recovery boundaries

ProcessLive

Thermal annealing replay

RTA activation, thermal budget, implant recovery, TED, and silicide contact windows

ProcessLive

Wet clean surface prep replay

Contamination removal, native oxide, HMDS adhesion, and clean-sequence evidence queue

EquipmentLive

Equipment facilities replay

Cleanroom particle budget, vacuum pumpdown, tool availability, and utilities load cards

PackagingLive

Packaging test reliability replay

Package parasitics, thermal stack, wafer sort guardband, and reliability stress cards

PackagingLive

Hybrid bonding mechanical readiness

Roughness, stiffness spread, particle state, metrology sigma, and readiness bands

DigitalLive

SRAM timing and controller

Read/write protocol, assertions, and verified timing trace

DigitalLive

March C- SRAM BIST

80-access fault test with SA0/SA1 injection and cycle replay

DigitalLive

SECDED memory ECC

Exhaustive one- and two-bit codeword fault injection

MemoryLive

DRAM retention and refresh

Storage-capacitor leakage, sensing boundary, and refresh margin

MemoryLive

Differential bitline sensing

Cell current, bitline capacitance, and sense-enable timing

LayoutLive

Distributed interconnect delay

Lumped versus 3/5-section RC delay and Elmore approximation

LayoutLive

Interconnect crosstalk

Coupling capacitance, victim peak noise, and recovery time

LayoutLive

Power rail IR drop

Load current, rail resistance, voltage gradient, and endpoint supply loss