The rotating stall precursor is a major research focus in the field of aerodynamic compressor flow stability, as an accurate understanding of its physical mechanisms can help improve the operating margin of the compressor system in aircraft engines and ensure flight safety. With advances in numerical simulation techniques, the physical essence of spike-type stall has been increasingly investigated in depth. Many studies assume that weak-amplitude disturbances exist prior to stall and facilitate its onset; however, the specific nature of these disturbances, their relationship with the spontaneous unsteady behavior of the flow, and whether these disturbances serve as the origin of the spike-type stall, have yet to be clarified.

Temperature combined with ocean currents have a significant influence on the distribution of marine life. These current patterns are shaped by the constant change in the distribution of land and sea on the Earth's surface. In a new study, SNSB scientist Thomas A. Neubauer correlated over 3 million observations of modern benthic mollusks from the shelf areas of the world's oceans with the development of today’s ocean currents during the recent Earth history. The research team recently published its findings in the journal Scientific Reports.

Neuromorphic computing, which mimics architecture of brain, could support growing energy demands of AI

Immersive media, including augmented and virtual realities, are taking over the world by storm, underscoring the need to progressively improve user experience through more realism. A relatively underexplored area in this field is how the user perceives the speaker’s orientation. Accordingly, research led by Sophia University showed that the loudness of the speaker’s voice, followed by spectral cues, helped the listener judge the speaker’s orientation. Their findings answer longstanding questions in auditory perception.

Mid-infrared spectroscopy, with its molecular fingerprint recognition capability, plays a crucial role in environmental monitoring, biomedical diagnosis, and industrial chemical analysis. However, traditional spectrometers suffer from drawbacks such as large size, system complexity, high cost, and operational difficulty. The research team led by Prof. Qin Chen at Jinan University has developed a chip-scale mid-infrared spectral sensing technology that pioneers a light source-side regulation strategy in contrast to dispersion element and photodetector regulartions in literature. By employing metasurface arrays as wavelength-selective thermal emission sources, the system enables "instant-camera"-style substance sensing through thermal imaging encoding/decoding, moreover, achieving an exceptional angular tolerance exceeding ±40 degrees. This innovative approach successfully integrates three key components -- light source, collimation unit, and dispersive element -- into a single platform, offering a novel solution for portable mid-infrared spectral detection.