{"artifact_id":"L1-091","layer":"L1","title":"Off-Axis Electron Holography — nanoscale phase imaging","domain":"Electron Microscopy","sub_domain":"Electron-beam interferometric phase imaging","physics_fingerprint":{"L_DAG":3.5,"title":"Off-Axis Electron Holography — nanoscale phase imaging","domain":"Electron Microscopy","carrier":"electron","primitives":["L.biprism","L.add_coherent","L.modulus_squared","int.temporal"],"sub_domain":"Electron-beam interferometric phase imaging","noise_model":"shot_poisson","problem_class":"linear_inverse","solution_space":"complex_2D","difficulty_delta":5,"integration_axis":"spatial","sensing_mechanism":"electron_interferometry"},"observable_profile":{"metric":"PSNR_dB","regime":"Existence of the recovered complex 2D is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by the declared priors. Stability is moderately conditioned (kappa_eff ~= 12); biprism_stability dominates the stability cliff; fringe_contrast_loss and the remaining mismatch parameters contribute higher-order bias terms. Photon-shot-noise-limited (poisson counting) sets the irreducible data-fidelity floor, while mild Tikhonov or analytic inversion is sufficient at the nominal Omega point.","secondary":"SSIM"},"size_tiers":{"center_spec":{"omega":{"H":2048,"W":2048,"kV":300,"pixel_A":0.5,"peak_electrons":100,"biprism_stability":1.0,"fringe_spacing_nm":2,"fringe_contrast_loss":0.0},"input_format":"measurement_only","problem_class":"electron_holography","forward_operator":"electron_holography_forward","epsilon_fn_center":"25.0"},"omega_bounds":{"H":[512,4096],"W":[512,4096],"kV":[200,300],"pixel_A":[0.1,5.0],"peak_electrons":[10,5000],"reference_drift":[0.0,0.01],"biprism_stability":[0.5,1.0],"fringe_spacing_nm":[0.5,10],"fringe_contrast_loss":[0.0,0.5]},"epsilon_bounds":{"psnr_db":[10.0,40.0]},"allowed_problem_classes":["electron_holography"],"allowed_omega_dimensions":["H","W","pixel_A","fringe_spacing_nm","kV","peak_electrons","biprism_stability","fringe_contrast_loss","biprism_stability","fringe_contrast_loss","reference_drift"],"allowed_forward_operators":["electron_holography_forward"]},"hardness_fn":{"type":"epsilon_fn","delta":5,"kappa":240,"metric":"PSNR_dB"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x8b5044ed6a60c71fe13ac4f0879738b6293f975fbbb8c59f6e933b12c27e6704","chain_tx_hash":"0x41d4cc43ad38afa1c67f7b86bf36e66b8411fe7fcaecfb5218e561045df6ee45","chain_block":41554184}