A highly sensitive pressure sensor with nanoscale features was developed based on the gradient concentration of Ti 3 C 2 T x (MXene). The fabrication strategy involved electrostatic adsorption and capillary action utilizing a carbonized sponge as the substrate. In this approach, hexadecyl trimethyl ammonium bromide (CTAB) was added dropwise to the bottom of the carbonized melamine sponge, facilitating the self-assembly of MXene and achieving a gradient attachment of conductive fillers onto the substrate. Furthermore, a layer of polyvinyl alcohol fibers was electrospun between the sensor bottom and the electrode to enhance sensor sensitivity. The pressure-sensitive sensor prepared by this method exhibited an exceptionally strong response within the pressure range of 0−3 kPa. It demonstrated an ultrahigh sensitivity of 381.91 kPa −1 , with a rapid deformation response of 100 ms and a quick recovery response of 30 ms. Notably, the sensor also demonstrated outstanding durability, enduring 8000 loading− unloading cycles without performance degradation. Moreover, it achieved a minimum detection limit as low as 0.1 Pa. Finite element numerical analysis confirmed that the MXene/CTAB/CMF composite prepared using this approach exhibited superior sensing performance under similar deformation conditions. Importantly, this pressure sensor's exceptional sensing capabilities extended to detecting various physiological signals in the human body and daily work scenarios. When integrated with a microprocessor, it accurately processed complex data sets, highlighting its great potential for practical applications.

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With the higher requirements of advanced integrated circuit technology, waveguides can propagate electromagnetic waves with higher frequencies, such as millimeter waves and centimeter waves, and have a large power capacity, which makes waveguides a common transmission line in the microwave band. In this experiment, based on the research of the curved slot waveguide, the method of suppressing the scattering loss of the side wall is studied. The wave optics module is used to model the optical waveguide, and the mode of the designed curved slot waveguide is analyzed, and the thickness of each layer of the optical waveguide is optimized according to the material characteristics to reduce the influence of the high refractive index substrate and reduce the curvature of the side wall Absorption of scattering loss to avoid the influence of resonance. The curved slot waveguide curved microring resonator and the curved slot waveguide racetrack microring resonator are studied, and the device performance parameters are simulated and analyzed. In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a sidewall scattering loss based on a curved slot waveguide and a preparation method. The side scattering characteristics of the waveguide multilayer memory are experimentally studied. The results show that the distribution of the scattered light intensity from the side of the waveguide along the propagation direction of the guided light exhibits an exponential decay law, and its attenuation constant is proportional to the information symbol density, and the curved slot used for recording information increases and grows.

In curved slot waveguide devices, there are often waveguide bending situations. Under certain conditions, the smaller the waveguide bending geometry, the more compact device structure; the smaller the bending geometry, the greater the loss caused by waveguide bending. Based on the study of the loss of a curved slot waveguide, this paper combines the geometric dimensions with it to study the influence of the loss. A new method for calculating the loss coefficient caused by the bending of the waveguide: the effective refractive index method with fixed interference correction. Through this method, the relationship between the bending loss coefficient and the width, height and radius of curvature of the dielectric waveguide is analyzed and calculated. Compare the calculation result with the result calculated by the pattern analysis method. Finally, the results were discussed and analyzed. The conformal transformation method and the normalization method of the geometrical size to the bending loss of the waveguide are analyzed, the relationship between the bending geometrical size of the curved narrow slot waveguide and the bending loss is obtained, and the empirical formula for the bending loss is established. From the formula, four Curves of waveguide bending size and bending loss of a common material. Experimental research results show that with the improvement of bending waveguide loss theory and coupling mechanism, low-loss transmission can be achieved under small bending dimensions, so that the integration of overall geometrical dimensions is the development trend of bending.