2025 The effective energy of a lattice system Xuenan Li, and Robert V Kohn arXiv preprint arXiv:2505.05436, 2025 HTML PDF A Constrained Saddle Search Approach for Constructing Singular and Flexible Bar Frameworks Xuenan Li, Mihnea Leonte, Christian D Santangelo, and 1 more author arXiv preprint arXiv:2503.14807, 2025 HTML PDF 2023 Some results on the Guest–Hutchinson modes and periodic mechanisms of the Kagome lattice Xuenan Li, and Robert V. Kohn Journal of the Mechanics and Physics of Solids, 2023 HTML PDF