An oomycete effector targets host calmodulin to suppress plant immunity.

Tropical and subtropical fruit trees face serious threats of oomycete-caused plant diseases. However, the molecular mechanism by which oomycete pathogens suppress the immunity of these fruit trees remains largely unclear. Effectors play a crucial role in the pathogenesis of plant pathogenic oomycetes.

Two-dimensional anisotropic semiconductors: from structure and properties to device applications.

The emergence of two-dimensional (2D) anisotropic semiconductor materials has gained significant interest due to their potential applications in electronic and optoelectronic fields. These materials exhibit in-plane angle-dependent properties owing to their distinct electronic band dispersion along different directions. However, a comprehensive overview of 2D anisotropic semiconductors, ranging from electronic band structures and anisotropic properties to device applications, is still lacking.

Fine Purification Engineering Enables Efficient Perovskite QLEDs with Efficiency Exceeding 23.

Perovskite quantum dots (PeQDs) have great application prospects in fields such as displays and solar cells due to their adjustable band gap, high absorption coefficient, high carrier mobility, and solution processability. However, the ionic crystal characteristic of PeQDs and their surface ligands have led to problems such as solvent sensitivity, poor crystal stability, and difficulty in adjusting the photoelectric properties, which are challenges in high-quality PeQDs. Here, to solve the problem of fluorescence degradation caused by phase change and loss of surface ligands during the purification process of CsPbI QDs, this work develops a purification strategy that finely regulates the polarity of the purification solvent, to obtain high-purity perovskite.

Porous α-FeO Hollow Rods/Reduced Graphene Oxide Composites Templated by MoO Nanobelts for High-Performance Supercapacitor Applications.

Porous α-FeO hollow rods/reduced graphene oxide (α-FeO HR/RGO) composites with unique morphological characteristics and a high surface area are prepared through a template strategy, which was systematically studied and found to have outstanding supercapacitive properties. When served as active material in a three-electrode setup, the optimized α-FeO HR/RGO-30, comprised 76.5 wt% α-FeO and 23.

Ultrahigh extinction ratio silicon micro-ring modulator by MDM resonance for high speed PAM-4 and PAM-8 signaling.

Due to the difficulty of controlling the waveguide loss in the doping region, high-speed silicon micro-ring modulators usually have limited extinction ratio. In this work, we present a mode-division-multiplexing (MDM) resonance-enhanced silicon micro-ring modulator with an ultrahigh extinction ratio. We used a two-mode micro-ring resonator and a mode conversion circular structure to trap the light twice within a single micro-ring resonator.

Silicon mode-insensitive modulator for TE mode and TE mode.

Mode-division multiplexing (MDM), which could further increase the capacity and flexibility of the communication systems, has attracted much attention. In this Letter, we demonstrate a proof-of-principle silicon mode-insensitive modulator based on the balanced Mach-Zehnder interferometer that could realize modulation of both TE and TE modes using a horizontal PN junction. The PN junction is offset from the center of the waveguide to the n-type doped region to modulate both TE and TE modes effectively.

Optical generation of UWB pulses utilizing Fano resonance modulation.

In this paper, we reported an integrated method to generate ultra-wideband (UWB) pulses of different orders based on a reconfigurable silicon micro-ring resonator-coupled Mach-Zehnder interferometer. Under proper operating conditions, the device can produce Fano resonances with a peak-to-valley extinction ratio of above 20 dB. UWB monocycle and doublet signals with picosecond pulse widths are produced when the microring resonator is modulated by square and Gaussian electrical pulses, respectively.

Hybrid WDM-MDM transmitter with an integrated Si modulator array and a micro-resonator comb source.

We demonstrate a multi-channel silicon photonic transmitter based on wavelength division multiplexing (WDM) and mode division multiplexing (MDM). The light source is realized by a silicon nitride (SiN) Kerr frequency comb and optical modulation is realized by silicon electro-optic modulators. Three wavelengths and two modes are employed to increase the optical transmission capacity.

Silicon reconfigurable mode-selective modulation for on-chip mode-multiplexed photonic systems.

Recently, optical mode-division multiplexing has drawn a lot of attention due to its ability to increase the optical communication capacity in one physical channel with a single wavelength carrier. In this Letter, we demonstrate reconfigurable mode-selective modulation which is potentially useful for on-chip mode-multiplexed photonic systems. The device consists of two mode exchangers and one mode modulator.

Detection of Cu in Water Based on Histidine-Gold Labeled Multiwalled Carbon Nanotube Electrochemical Sensor.

Based on the strong interaction between histidine and copper ions and the signal enhancement effect of gold-labeling carbon nanotubes, an electrochemical sensor is established and used to measure copper ions in river water. In this study the results show that the concentrations of copper ion have well linear relationship with the peak current in the range of 10-10mol/L, and the limit of detection is 10mol/L. When using this method to detect copper ions in the Xiangjiang River, the test results are consistent with the atomic absorption method.