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<title>Daniel Castillo Castro — Projects</title>
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      <li><a href="man-eng.html">Manifesto</a></li>
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  <section class="page-header">
    <h1>Projects</h1>
    <p class="hero-bio">
      Selection of research and development projects I have worked on,
      organized by research area.
    </p>
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  <section>
    <h2>Research</h2>
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      <article class="project-card">
        <div class="project-header">
          <h3 class="project-title">
            <a href="https://github.com/Dacastillo/r" target="_blank" rel="noopener noreferrer">r</a>
          </h3>
          <span class="project-year">2024–2026</span>
        </div>
        <p class="project-description">
          Computational research in DFT (Density Functional Theory), LAMMPS and molecular dynamics
          of 2D materials and van der Waals heterostructures. Modeling of structural,
          electronic and thermal properties of hBN, graphene and heterostructures.
        </p>
        <div class="project-stack">
          <code>Python</code>
          <code>LAMMPS</code>
          <code>GPAW</code>
          <code>DFT</code>
          <code>TeX</code>
        </div>
      </article>

      <article class="project-card">
        <div class="project-header">
          <h3 class="project-title">
            <a href="https://github.com/Dacastillo/Moleqlas---group-repo" target="_blank" rel="noopener noreferrer">Moleqlas</a>
          </h3>
          <span class="project-year">2024–2026</span>
        </div>
        <p class="project-description">
          Quantum computing applied to molecular chemistry. Quantum simulations for molecular systems
          in the QuDIT group at PUC Chile. Implementation of VQE algorithms and study of electronic states.
        </p>
        <div class="project-stack">
          <code>Qiskit</code>
          <code>Python</code>
          <code>Jupyter</code>
          <code>VQE</code>
        </div>
      </article>

      <article class="project-card">
        <div class="project-header">
          <h3 class="project-title">
            <a href="https://github.com/Dacastillo/QQuipu3" target="_blank" rel="noopener noreferrer">QQuipu3</a>
          </h3>
          <span class="project-year">2024</span>
        </div>
        <p class="project-description">
          Simulation of thermal and Gibbs states with quantum circuits. Preparation of state
          ρ<sub>β</sub> = e<sup>−βH</sup>/Z using imaginary time evolution techniques and Qiskit.
        </p>
        <div class="project-stack">
          <code>Qiskit</code>
          <code>Python</code>
          <code>Quantum</code>
        </div>
      </article>

      <article class="project-card">
        <div class="project-header">
          <h3 class="project-title">
            <a href="https://github.com/Dacastillo/Shore-Test" target="_blank" rel="noopener noreferrer">Shore-Test</a>
          </h3>
          <span class="project-year">2023</span>
        </div>
        <p class="project-description">
          CoastSat applied to Chilean coastlines: using Landsat and Sentinel-2 with Google Earth Engine for
          automated shoreline extraction. Analysis of coastal erosion and morphological changes.
        </p>
        <div class="project-stack">
          <code>Python</code>
          <code>GEE</code>
          <code>Sentinel-2</code>
          <code>Landsat</code>
        </div>
      </article>

      <article class="project-card">
        <div class="project-header">
          <h3 class="project-title">
            <a href="https://github.com/Dacastillo/PDE-Test" target="_blank" rel="noopener noreferrer">PDE-Test</a>
          </h3>
          <span class="project-year">2023</span>
        </div>
        <p class="project-description">
          Solving Partial Differential Equations (PDEs) with the finite element method (FEM)
          on 3D geometries defined by STL files. Applications in physics and engineering.
        </p>
        <div class="project-stack">
          <code>Python</code>
          <code>FEM</code>
          <code>NumPy</code>
        </div>
      </article>

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    <h2>Education & Outreach</h2>
    <div class="project-grid">

      <article class="project-card">
        <div class="project-header">
          <h3 class="project-title">
            <a href="https://github.com/Dacastillo/t" target="_blank" rel="noopener noreferrer">t</a>
          </h3>
          <span class="project-year">2015–2026</span>
        </div>
        <p class="project-description">
          Teaching materials: lecture notes, presentations and resources for university physics courses.
          Includes solved problems, lab guides and support materials in LaTeX and HTML.
        </p>
        <div class="project-stack">
          <code>LaTeX</code>
          <code>HTML</code>
          <code>Markdown</code>
        </div>
      </article>

      <article class="project-card">
        <div class="project-header">
          <h3 class="project-title">
            <a href="https://github.com/Dacastillo/LAMMPS-tutorial" target="_blank" rel="noopener noreferrer">LAMMPS Tutorial</a>
          </h3>
          <span class="project-year">2025</span>
        </div>
        <p class="project-description">
          LAMMPS tutorial presented at LAMMPS Workshop. Practical guide for molecular dynamics
          simulation with script examples, trajectory analysis and visualization.
        </p>
        <div class="project-stack">
          <code>LAMMPS</code>
          <code>Shell</code>
          <code>Ovito</code>
        </div>
      </article>

    </div>
  </section>

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  <section>
    <h2>Hackathons</h2>
    <div class="project-grid">

      <article class="project-card">
        <div class="project-header">
          <h3 class="project-title">
            <a href="https://github.com/Dacastillo/project_Dacastillo" target="_blank" rel="noopener noreferrer">QHack 2023</a>
          </h3>
          <span class="project-year">2023</span>
        </div>
        <p class="project-description">
          Project presented at the quantum computing hackathon QHack 2023. Implementation
          of quantum algorithms and circuit optimization using PennyLane and Qiskit.
        </p>
        <div class="project-stack">
          <code>PennyLane</code>
          <code>Qiskit</code>
          <code>Jupyter</code>
        </div>
      </article>

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