Jiajia Zhou

Nov 25, 2024 | nature.com | Le Fu Zhang |Jiajia Zhou |Xingwu Jiang |Jinquan Chen |Yanyan Liu |Dayong Jin

AbstractShrinking the size of photoelectrodes into the nanoscale will enable the precise modulation of cellular and subcellular behaviors of a single neuron and neural circuits. However, compared to photovoltaic devices, the reduced size causes the compromised efficiencies. Here, we present a highly efficient nanoelectrode based on bimetallic zinc and gold porphyrin (ZnAuPN).

Aug 6, 2024 | biorxiv.org | Le Fu Zhang |Jiajia Zhou |Olga Shimoni |Shihui Wen

AbstractThe COVID-19 pandemic has underscored the critical need for rapid and accurate diagnostic tools. Current methods, including PCR and rapid antigen tests (RAT), have limitations in speed, sensitivity, and the requirement for specialized equipment and trained personnel. Nanotechnology, particularly upconversion nanoparticles (UCNPs), offer a promising alternative due to their unique optical properties.

May 25, 2024 | tandfonline.com | Xue Bai |Xinxin Cai |Jiajia Zhou |Wei Yang

AbstractObjectives Older adults are at an elevated risk of experiencing long COVID, with post-COVID-19 depressive symptoms being prevalent. However, the protective factors against this remain understudied.

Jan 8, 2024 | nature.com | Yanyan Liu |Jiajia Zhou |He Wang |Jinquan Chen |Ying Mao |Dayong Jin

AbstractNanoscale optoelectrodes hold the potential to stimulate optically individual neurons and intracellular organelles, a challenge that demands both a high-density of photoelectron storage and significant charge injection. Here, we report that zinc porphyrin, commonly used in dye-sensitized solar cells, can be self-assembled into nanorods and then coated by TiO2. The J-aggregated zinc porphyrin array enables long-range exciton diffusion and allows for fast electron transfer into TiO2.

Oct 9, 2023 | nature.com | xun zhang |Jiayan Liao |Jiajia Zhou |Chao Liu

AbstractSkeletal disorders are commonly diagnosed by X-ray imaging, but the radiation limits its use. Optical imaging through the near-infrared-II window (NIR-II, 1000–1700 nm) can penetrate deep tissues without radiation risk, but the targeting of contrast agent is non-specific. Here, we report that lanthanide-doped nanocrystals can passively target the bone marrow, which can be effective for over two months.