A research paper by scientists at The Chinese University of Hong Kong proposed a 3D radar-based control scheme that realizes the navigated locomotion of microswimmers in 3D space with multiple static and dynamic obstacles.

The new research paper, published on Jun. 2 in the journal Cyborg and Bionic Systems, presented a 3D hierarchical radar with a motion sphere and a detection sphere is firstly developed. Using the radar-based avoidance approach, the desired motion direction for the microswimmer to avoid obstacles can be obtained, and the coarse-to-fine search is used to decrease the computational load of the algorithm. Three navigation modes of the microswimmer in 3D space with dynamic conditions are realized by the radar-based navigation strategy that combines the global path planning algorithm and the radar-based avoidance approach.

A new class of highly efficient and scalable quantum low-density parity-check error correction codes, capable of performance approaching the theoretical hashing bound, has been developed by scientists at Institute of Science Tokyo, Japan. These novel error-correction codes can handle quantum codes with hundreds of thousands of qubits, potentially enabling large-scale fault-tolerant quantum computing, with applications in diverse fields, including quantum chemistry and optimization problems.

Researchers from the Institute of Industrial Science, The University of Tokyo have applied stochastic optimal control theory to biological systems, studying how these systems behave. By using concepts and tools from information theory, they successfully converted the nonlinear optimization problem into a reasonably solvable form. The optimal control strategies for problems such as biodiversity and epidemics are found to exhibit “mode-switching” phenomena, where sharply transitioning from weak to strong control provides the most effective solution.

A research paper by scientists at University of Southern Denmark presented a multimodal limbless crawling soft robot capable of navigating complex terrains using a combination of rectilinear motion and asymmetric steering gaits.

The research paper was published on Jun. 9, 2025 in the journal Cyborg and Bionic Systems.