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Fig. 2 | Nanoscale Research Letters

Fig. 2

From: Efficient Prediction and Analysis of Optical Trapping at Nanoscale via Finite Element Tearing and Interconnecting Method

Fig. 2

Constructions of a cluster tree and a block cluster tree of 4 levels based on nested dissection. a Construction of a cluster tree by recursive subdivision of edge-based basis function set I = {1,2,…18}. b Construction of a block cluster tree where white blocks are zero matrices and green blocks can be full matrices or low-rank decomposition matrices

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