Study on composite photonic crystal patch antenna

Study on an SRR-shaped left-handed material patch antenna

“…Bloch wave and surface wave resonance would be produced for the electromagnetic wave's Bragg dispersion at a frequency. We have studied the resonance effect in a triangular structure whose effective refraction coefficient is close to −1; i.e., we calculated the S parameters (S11 and S21) of the medium used for the photonic crystal patch antenna; S21 is calculated by adding a microstrip feeder on the left of the patch [15]. The calculated result in figure 10 extracted by the method of Nicolson, Ross, and Weir (NRW) [8][9][10] apparently showed that the refraction is close to −1 at the frequency of 7.67 GHz, which would enhance the resonance effect at the resonance frequency, and improve the localized intensity of the electromagnetic energy by such lefthanded materials.…”

PVA-based bulk microneedles capable of high insulin loading and pH-triggered degradation for multi-responsive and sustained hypoglycemic therapy

“…Therefore, conventional "closed-loop" microneedles are typically composed of soluble polymers that are infused with "closed-loop" nanoparticles. 10,26,32 GOx exhibits the capability to consume oxygen and generate H 2 O 2 , thereby inducing a localized hypoxic environment. 33,34 Additionally, GOx serves as a catalyst for the oxidation of glucose to gluconic acid, leading to a localized decrease in pH.…”

Study on radiation performances of dipole antenna with diamond‐structure EBG substrate fabricated by 3D printing technique

“…Due to difficulties in manufacturing, most studies on EBG substrate were concentrated to two‐dimensional structures or three‐dimensional woodpiles structures. In most of them, the EBGs with a diamond structure were analyzed because that is the most promising structure to obtain wide bandgap and modulate the bandgap width by structural parameters and material parameters providing an excellent band‐gap performance . The EBGs can completely reflect EM waves and effectively suppress propagation of surface waves.…”

“…In most of them, the EBGs with a diamond structure were analyzed because that is the most promising structure to obtain wide bandgap and modulate the bandgap width by structural parameters and material parameters providing an excellent band-gap performance. [17][18][19] The EBGs can completely reflect EM waves and effectively suppress propagation of surface waves. However, due to the difficulties in fabrication, up to our knowledge there is no report about dipole antenna with diamond EBG structure.…”