Interactive holography offers unmatched levels of immersion and user engagement in the field of future display. Despite of the substantial progress has been made in dynamic meta-holography, the realization of real-time, highly smooth interactive holography remains a significant challenge due to the computational and display frame rate limitations. In this study, we introduced a dynamic interactive bitwise meta-holography with ultra-high computational and display frame rates. To our knowledge, this is the first reported practical dynamic interactive metasurface holographic system. We spatially divided the metasurface device into multiple distinct channels, each projecting a reconstructed sub-pattern. The switching states of these channels were mapped to bitwise operations on a set of bit values, which avoids complex hologram computations, enabling an ultra-high computational frame rate. Our approach achieves a computational frame rate of 800 kHz and a display frame rate of 23 kHz on a low-power Raspberry Pi computational platform. According to this methodology, we demonstrated an interactive dynamic holographic Tetris game system that allows interactive gameplay, color display, and on-the-fly hologram creation. Our technology presents an inspiration for advanced dynamic meta-holography, which is promising for a broad range of applications including advanced human-computer interaction, real-time 3D visualization, and next-generation virtual and augmented reality systems.

Palladium (Pd)-based sulfides have triggered extensive interest due to their unique properties and potential applications in the fields of electronics and optoelectronics. However, the synthesis of large-scale uniform PdS and PdS₂ nanofilms (NFs) remains an enormous challenge. In this work, 2-inch wafer-scale PdS and PdS₂ NFs with excellent stability can be controllably prepared via chemical vapor deposition combined with electron beam evaporation technique. The thickness of the pre-deposited Pd film and the sulfurization temperature are critical for the precise synthesis of PdS and PdS₂ NFs. A corresponding growth mechanism has been proposed based on our experimental results and Gibbs free energy calculations. The electrical transport properties of PdS and PdS₂ NFs were explored by conductive atomic force microscopy. Our findings have achieved the controllable growth of PdS and PdS₂ NFs, which may provide a pathway to facilitate PdS and PdS₂ based applications for next-generation high performance optoelectronic devices.

针对红外目标跟踪中红外图像模糊、存在噪声、目标特征少的问题，提出了自适应信息选择的变尺度相关滤波红外目标跟踪算法。首先，在提取的灰度特征中重新提取了梯度信息，用于增强特征感受野大小，丰富目标特征信息；其次，稀疏滤波器系数，减少滤波器信息冗余，并将其结合至滤波器训练过程中，不同通道下的空间信息保留程度不同，有效提高滤波器表达能力；最后，在原有保留尺度更新的基础上，加入变尺度滤波器，构建边界框比例不同的尺度池，有效应对边界框比例变化的情况。在LSOTB-TIR数据集和PTB-TIR数据集上做了对比和消融实验以验证算法的有效性，结果表明该算法在LSOTB-TIR数据集上精确度和成功率分别达到71.3%和59.4%，在使用手工特征的算法中获得了更好的表现。

Multispectral and polarized focusing and imaging are key functions that are vitally important for a broad range of optical applications. Conventional techniques generally require multiple shots to unveil desired optical information and are implemented via bulky multi-pass systems or mechanically moving parts that are difficult to integrate into compact and integrated optical systems. Here, a design of ultra-compact transversely dispersive metalens capable of both spectrum and polarization ellipticity recognition and reconstruction in just a single shot is demonstrated with both coherent and incoherent light. Our design is well suited for integrated and high-speed optical information analysis and can significantly reduce the size and weight of conventional devices while simplifying the process of collecting optical information, thereby promising for various applications, including machine vision, minimized spectrometers, material characterization, remote sensing, and other areas which require comprehensive optical analysis.

快校正磁铁电源能够对束流轨道的偏离进行快速校正，提升同步辐射光源运行的可靠性。随着第四代衍射极限储存环（DLSR）光源品质的进一步提高，为了保证束流轨道的稳定性，快速轨道反馈（FOFB）系统对校正磁铁电源的性能也提出了更高的要求。针对先进同步辐射光源FOFB系统对快校正磁铁电源的需求，将目前国内外第四代同步辐射光源束流轨道快速校正磁铁电源的研究成果分为线性电源和开关电源两类，对各方案的拓扑结构、控制策略以及性能参数的特点等进行了简要对比分析，可以看出目前国内外正在研制的快校正磁铁电源响应带宽基本可以达到5 kHz甚至10 kHz水平，线性电源的低纹波噪声特性具备应用优势但需要关注效率低的问题；开关电源方案具有高效、模块化等特点，如果可以有效解决纹波噪声问题，将会更广泛地应用在快校正磁铁电源的设计中。