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cccskills
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electronic-analysis

Use when the user asks to analyze DOS, band structure, COHP bonding, d-band center, or MD trajectory properties (RDF, RMSD, RMSF, hydrogen bonds, clustering, dimensionality reduction, dihedral angles, planar density).

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Hello-QM/catgo-LRG星标 208(GitHub 208 + cccskills 0)

实测评分 未实测

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  • SKILL.md3.0 KB

SKILL.md(原文)

安装前可以查看交给 AI 代理的指令内容。

Electronic Structure & MD Trajectory Analysis

Density of States (DOS)

ToolPurpose
catgo_dos_totalTotal DOS
catgo_dos_computeProjected DOS (PDOS) for atom groups
catgo_dos_dbandD-band center, width, filling (catalysis)
catgo_dos_from_dirLoad DOS from remote HPC directory

PDOS Workflow

  1. Get session_id from file upload or catgo_dos_from_dir
  2. Define atom groups: {"groups": [{"atoms": [0,1,2], "channels": "d", "label": "Surface Pt d"}]}
  3. Call catgo_dos_compute with session_id and groups

Channel syntax: "d", "s,p", "dxy,dz2"

D-Band Analysis

catgo_dos_dband(session_id, atoms=[surface_indices]) — Returns d-band center, width, filling.

  • Higher center = stronger adsorbate binding
  • occupied_only_center=True (default) for occupied d-band center

Band Structure

ToolPurpose
catgo_bands_dataBand energies, k-path, band gap
catgo_bands_projectionsProjected (fat) bands with orbital weights

Report: direct/indirect gap, gap value, high-symmetry labels.

COHP (Bonding Analysis)

catgo_cohp_data — Crystal Orbital Hamilton Population from LOBSTER output.

  • bond_indices: 1-based bond numbers
  • Negative -COHP below Fermi = bonding; positive = antibonding
  • ICOHP = quantitative bond strength

MD Trajectory Analysis

All MD tools accept trajectory_b64 (base64-encoded file) and format (pdb, xyz, extxyz, lammpstrj).

Structural Analysis

ToolPurposeKey Parameters
catgo_md_rdfRadial distribution g(r)pairs, r_range, n_bins
catgo_md_rmsdRMSD over time (stability)ref_frame, atom_indices
catgo_md_rmsfPer-atom fluctuationatom_indices
catgo_md_dihedralsDihedral angle evolutionatom_quartets

Hydrogen Bond Analysis

ToolPurpose
catgo_md_hbondsDetect H-bonds per frame
catgo_md_hbond_lifetimeH-bond lifetime autocorrelation

Methods: baker_hubbard or wernet_nilsson. Default: D-A 3.5 A, D-H-A angle 150 deg.

Conformational Analysis

ToolPurpose
catgo_md_clusteringCluster frames by structural similarity (kmeans/dbscan)
catgo_md_dimreducePCA/t-SNE/UMAP embedding
catgo_md_planar_density2D density map (diffusion analysis)

Workflow Recipes

Surface Catalysis DOS

  1. catgo_dos_from_dir(remote_path="...") → 2. catgo_dos_total →
  2. catgo_dos_dband(atoms=[surface]) → 4. catgo_dos_compute(groups=[...])

MD Water/Interface

  1. catgo_md_rdf(pairs=[["O","H"],["O","O"]]) → 2. catgo_md_hbonds →
  2. catgo_md_hbond_lifetime → 4. catgo_md_planar_density(plane="xy")

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