{"uid":"cap_pVCMenj195P8NQcoHNl6U","slug":"mahastrategies-materials-thermal-expansion-mismatch-calculator-3854d06e","name":"Mahastrategies Materials Thermal Expansion Mismatch Calculator","description":"Estimate differential strain from supplied expansion coefficients and temperature changes. For preliminary scenarios; no stress, delamination or reliability certification.","url":"https://www.mahastrategies.com/api/v1/micro/materials-thermal-expansion-mismatch?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["dataClass","alphaFilmPerK","alphaSubstratePerK","deltaTemperatureK"],"properties":{"dataClass":{"enum":["public","synthetic"],"type":"string"},"alphaFilmPerK":{"type":"number","maximum":1000000000000,"minimum":-1000000000000},"deltaTemperatureK":{"type":"number","maximum":1000000000000,"minimum":-1000000000000},"alphaSubstratePerK":{"type":"number","maximum":1000000000000,"minimum":-1000000000000}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["version","offerId","amountBaseUnits","inputDigest","result","boundaries","receiptDigest"],"properties":{"result":{"type":"object"},"offerId":{"enum":["materials-thermal-expansion-mismatch"],"type":"string"},"version":{"enum":["maha-microproducts/0.1"],"type":"string"},"boundaries":{"type":"array","maxItems":128,"minItems":0},"inputDigest":{"type":"string","maxLength":71},"receiptDigest":{"type":"string","maxLength":71},"amountBaseUnits":{"enum":["31001"],"type":"string"}},"additionalProperties":false}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.031001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.031001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.031001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.031001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_zl3tYfZeVww_w7mo0Ta0q","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.031001","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Estimates differential strain between a film and substrate from their thermal expansion coefficients and a temperature change.","exampleAgentPrompt":"Can you estimate the differential thermal expansion strain between a silicon nitride film with a CTE of 3.3e-6 per K and a silicon substrate with a CTE of 2.6e-6 per K when the temperature changes by 250 K? Use public data class.","exampleUseCases":[{"title":"Semiconductor thin film stack check","prompt":"I'm designing a silicon dioxide film on a GaAs substrate and need to know the differential strain when the stack heats up by 150 K — the CTE of the film is 0.55e-6 per K and the substrate is 6.0e-6 per K. Can you run a preliminary mismatch estimate using public data?"},{"title":"MEMS packaging thermal cycle assessment","prompt":"For a MEMS packaging scenario, estimate the differential strain between a gold film (CTE 14.2e-6 per K) and an alumina substrate (CTE 6.5e-6 per K) over a temperature swing of -40 to 125°C, so a delta of 165 K. Use synthetic data class."},{"title":"LED substrate compatibility screening","prompt":"I'm screening substrate materials for an LED epi layer with a CTE of 5.6e-6 per K. The candidate substrate has a CTE of 7.1e-6 per K. What's the differential strain if the process temperature changes by 200 K? Mark it as public data."}],"resultDescription":"Returns a structured result object containing the computed differential strain estimate along with metadata including offer ID, version, input digest, receipt digest, amount in base units, and any applicable boundary conditions flagged during the calculation.","failureModes":["Missing required fields (alphaFilmPerK, alphaSubstratePerK, deltaTemperatureK, dataClass) return validation errors","Values outside the allowed numeric range (±1e12) are rejected","Invalid dataClass enum value (not 'public' or 'synthetic') causes schema rejection","Payment failure or insufficient USDC balance blocks the request","No stress, delamination, or reliability certification — results are preliminary only and may not reflect full mechanical behavior"],"whenToPreferThis":"Choose this endpoint when you need a fast, deterministic, first-order estimate of thermal expansion mismatch strain between a film and substrate for preliminary materials screening or design feasibility checks. It is ideal for automated pipelines that need a quick numeric result without requiring full FEA or certified reliability analysis. Prefer alternatives when you need stress values, delamination risk assessment, or certified reliability data for production use.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T06:52:57.610Z","isFirstParty":false,"canonicalSlug":"mahastrategies-materials-thermal-expansion-mismatch-calculator-3854d06e"}