Xiaolu Xiong's research while affiliated with Beijing Institute of Technology and other places

... Generally, of late, ultrashort pulses are generated using a rare-earth doped fiber as the gain medium, which has attracted great interest, particularly in the 1 μm wavelength region. Although various demonstrations on the generation of mode-locked pulses in YDFLs have been achieved (Haris et al. 2022a;Haris et al. 2022b;Liu et al. 2022;Pan et al. 2023;Soboh et al. 2022;Wang et al. 2022;Xu et al. 2022;Zhao et al. 2022), the range of the output power obtained from the mode-locked fiber lasers is limited to only tens of milliwatts, and the pulse durations are mostly in picoseconds. The low output power in the previous works is due to the single-clad gain medium, which is typically core-pumped by low-power singlemode laser diodes (LDs). ...

... Therefore, early diagnosis and effective treatment of inflammation are needed to prevent long-term negative effects on the work and quality of life of patients. Proteins such as interferon-γ (IFN-γ) 87 , tumor necrosis factor-alpha (TNF-α) 88 , anti-cyclic citrullinated peptide antibody (anti-CCP) 89 , and eosinophilic cationic protein (ECP) 90 are biomarkers of inflammatory diseases such as autoimmune hepatitis, rheumatoid arthritis (RA), and allergic rhinitis (AR) and are used for diagnosis. ...

... The reading output of the device, specifically the discernible change in visible colors in the presence of analytes, was quantified through captured images using an integrated smartphone (Figure 9a). In a study by Xiong et al. [213], a colorimetric-based µPAD was developed for the simultaneous detection of diverse water quality parameters, including Cu(II), Ni(II), Fe(III), nitrite, and pH. The fabrication involved creating hydrophobic flow patterns on a Whatman Grade 1 filter paper substrate using a wax printer. ...

... These advantages lead to better specificity, stability, and selectivity of the sensor. The LOD of the method was 1.07 × 10 -11 mg.mL -1 , and the linear detection range was 3.6 × 10 -10 mg.mL -1 to 3.6 × 10 -5 mg.mL -1 [99] (Fig. 5 B). [99], with permission by Elsevier; C and D cited from reference [103], with permission by ACS.) PD-L1 exists not only on the cell surface but also on the surface of exosomes, and an increasing number of studies have shown that exosomal PD-L1 can suppress immune responses and promote tumor progression [100,101,102]. ...

... 15 Other notable findings include the pronounced coupling between optical cavity modes and excitons in MoS 2 16 and WS 2 17 nanotubes, the manifestation of second harmonic generation, 18 realizations of a torsional resonator, 19 and the sliding ferroelectricity. 20 The last was utilized to store optical data in a nanotube array and subsequently access this information. Furthermore, when incorporated into polymers in trace amounts, WS 2 nanotubes significantly bolstered their strength and fracture toughness against impact, which could have immense impact on, among others, medical technologies and 3D printing. ...

... Voltammetry plays a key role in the study of charge transfer processes, making it a necessary method for the fundamental and applied study of systems involved in many modern technologies, such as renewable energy [11,12], mineral processing [13,14], metallurgy [15], materials engineering [16], wastewater treatment [17][18][19], among others. In addition, its application as a chemical analytical method extends to the quantification of pollutants [19,20], drugs [21, REVIEWS 22], cancer biomarkers [23], diagnosis of COVID-19 [24] and HIV [25], and many others. ...

... Neuromorphic computing systems perform data storage and processing by mimicking the human brain's biological structure, including synapses and neurons, using electronic devices [17][18][19][20][21][22][23][24]. The concept of memristors has been proposed by Leon O. Chua in 1971 [25], in which they represent the relationship between magnetic flux and electric charge. ...

... Thus, in α-Bi 4 Br 4 belts, the signal of the optical response of 1D helical edge states can be expected to be extremely enhanced by 2 ∼ 3 orders (depending on the layer number of the sample) without loss of the desired 1D nature [89,90]. Its infrared absorption property can also be used as an ultrafast saturated absorber [91,92]. In addition, the Bi 4 Br 4 exhibit simultaneously the topological phase and superconductive phase under 3.8-4.3 ...

... This research was of great significance for the reliability and security of power systems and provided valuable research and application references for related fields [15]. opted for optimized texture features to project insulator images and searched for insulator position information through the projected images [16]. applied the Harris corner detection algorithm to both the target image and the template image, matching feature information with template feature information. ...

... These nanoribbons with single-Dirac -cone topological edge states can serve as ideal 1D wires for dissipationless transport. L. Qiao et al. studied the transport properties of the exfoliated α-Bi 4 Br 4 nanobelts from single crystals [85]. The temperature-dependent resistance of the α-Bi 4 Br 4 nanobelt shows a non-metallic behavior. ...