A novel design of a two-port printed microstrip rectenna with compact structure for communication systems is presented. An aperture-coupled dual polarization patch antenna utilized as the receiving antenna. The vertical feed port receives microwave energy and transfers it to rectifying circuit dc power generation, while horizontal used data communication, high isolation between two ports. This includes harmonic suppression functionality, which essential microwave-direct current (mw-dc)...

An ultra-sensitive sensor, based on two Fabry-Perot interferometers (FPIs), has been realized for temperature and pressure sensing. A polydimethylsiloxane (PDMS)-based FPI1 was used as a sensing cavity, closed capillary-based FPI2 reference cavity its insensitivity to both pressure. The FPIs were connected in series obtain cascaded showing clear spectral envelope. sensitivities of the proposed sensor reach up 16.51 nm/°C 100.18 nm/MPa, which are 25.4 21.6 times, respectively, larger than...

A high sensitivity optical fiber gas pressure sensor based on the enhanced Vernier effect is proposed. The composed of a Fabry-Perot interferometer (FPI) and Mach-Zehnder (MZI). Since interference fringes FPI MZI drift in opposite direction with change pressure, when their free spectral ranges are similar, formed after cascading. Compared traditional sensor, realizes much higher measurement without complex manufacturing process or desensitized reference interferometer. experimental results...

In this study, we believe is a novel and compact fiber optic sensor for measuring strain vector magnetic fields that has been proposed examined. The comprised of sequence two bubbles tapered with diameter 31µm, offering maximum sensitivity -44.5 pm/µɛ. A susceptible field sensing structure can be achieved by simply bonding the device to magnetostrictive material. Results demonstrate exhibits -0.7838 nm/mT, linear fit 0.9931 within 8 28 mT. direction calculated 230.85 pm/° 24 This work...

An optical fiber Fabry-Pérot interferometer (FPI) based on an air cavity with a microchannel is proposed and demonstrated for gas pressure measurement. The inner fabricated by fusion splicing single-mode (SMF) microhole at the end facet to another section of SMF, then creating vertically cross allow flow in. As cascaded short three-beam interference pattern produced, which shifts variation in due refractive index change gas. In order compensate temperature effect, multiple-dip tracing...

A novel whispering-gallery mode (WGM) sensor is fabricated by coupling a tapered two-mode fiber and glass capillary. By utilizing the relatively large orifice of capillaries, polydimethylsiloxane (PDMS) magnetic fluid are directly injected into two WGM structured respectively, allowing these materials to substantially interact with light field WGM, thereby achieving temperature, pressure, measurements. λ1 λ2 resonant peak wavelengths after injecting PDMS λ3 wavelength The experiments found...

Breast cancer is one of the most common malignant tumors in women, accounting for 7-10 % all body. Second only to uterine cancer, it poses a significant threat women's health. In this study, two-dimensional material based on GO nanoparticles was designed combine photothermal therapy (PTT) with chemotherapy targeted treatment breast cancer. Firstly, HPAA grafted onto through an amide reaction after EDC/NHS activation. Secondly, RGD attached amino group HPAA. Finally, chemotherapeutic drug...

Objective To analyze the value of abdominal CT images combined with serological indicators in predicting ureteral involvement idiopathic retroperitoneal fibrosis(IRF). Methods The 79 IRF patients were analyzed retrospectively,including involved sites and enhancement characteristics lesions.According to inclusion exclusion criteria,43 complete data selected assigned into a group(n=29)and non-ureteral group(n=14) according whether ureters IRF.Logistic regression analysis was performed select...

Abstract To settle the unsatisfied efficiency of near‐infrared (NIR) emission in lanthanide‐doped luminescent materials, a series Pt 4+ ‐doped and /Er 3+ ‐codoped Cs 2 ZrCl 6 double perovskite phosphors are designed. Excited by 254 nm, compounds can exhibit characteristic emissions host , resulting polychromatic luminescence caused efficient energy transfer from to . Through combining theoretical calculation profiles, it is clear that broadband at 660 nm assigned self‐trapped exciton [PtCl ]...

A high sensitivity optical fiber temperature and gas pressure sensor with integrated micro-cavity is proposed. First, a single-mode (SMF) spliced section of capillary, then the sensitive material polydimethylsiloxane (PDMS) filled into capillary to form Fabry-Perot interferometer (FPI). Finally, femtosecond laser used ablate core SMF third reflecting surface, constituting two cascaded FPIs. When FPIs have similar free spectral range, Vernier effect produced. The reached 14.41 nm/°C 113.82...

A long period fiber grating (LPFG) was inscribed in a tapered two-mode (TMF) by using CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> laser pulse point-to-point direct writing technique. TMF is spliced between two segments of single mode (SMF), then to waist diameter <inline-formula xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$55 \mu \text{m}$ </tex-math></inline-formula> , and this structure cannot form...

We have designed a highly sensitive optical fiber transverse load and axial strain sensor based on the cascaded Fabry–Perot (F–P) cavity Sagnac loop. F–P is composed of an air-bubble formed by Section quartz capillary discharge. Fiber loop made winding panda (PF) through 3 dB coupler. When free spectral ranges (FSRs) two interferometers are similar, they to form Vernier effect, which amplifies sensitivity sensor. The experimental results show that sensitivities up 19.1 nm/N 28.9 pm/...

An ultrasensitive fiber optic magnetic field sensor based on Fabry–Perot interferometer (FPI1) and magnetostrictive material Terfenol-D is proposed. A low fineness FPI1 made by inserting a tapered two-mode (TMF) into hollow-core (HCF). Due to the increased effective length of strain, particularly sensitive axial strain. Then, bonded FPI1. excellent stretching properties under action field, adhered also has high sensitivity field. The experiment found that in large range 9.7–92.4 mT, reached...