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Chinese scientists develop electrode coating to address signal loss and tissue adhesion problems in long-term brain-computer interface implantation_我的网站

一 |     　　超450家A股上市公司，合计分红超2300亿；中国移动、中国平安、中国电信、中国石化、紫金矿业均超百亿，30余家超10亿　　A股半年报披露进入收官阶段，上市公司中期分红方案成为投资者关注的焦点之一。    

    Photo: VCG
Chinese researchers have developed a multifunctional electrode coating that addresses key challenges in long-term brain-computer interface (BCI) implantation, including signal loss and tissue adhesion, bringing BCI one step closer to clinical application, the Global Times learned from the research team behind the findings on Sunday. 
As an emerging field combining neuroscience and artificial intelligence (AI), BCI faces a major challenge of ensuring long-term compatibility between electrodes and brain tissue. Previous clinical trials showed that immune responses could cause implanted electrodes to retract after just three months, severely reducing signal quality and the number of available channels. 
This problem stems from chronic inflammation triggered by implants, which creates insulating scar tissue around electrodes and separates them from neurons. Irreversible adhesion between electrodes and brain tissue after long-term implantation also makes device removal risky, potentially causing brain injury during follow-up surgeries.
Experiments showed that flexible neural electrodes coated with this material could operate stably in the brain for more than 300 days and could be safely removed without causing damage. This means the universal coating technology can make electrodes not only operate stably over the long term but can also be safely removed and replaced after aging, paving the way for long-term BCI applications.
Developed by the research team led by Zhang Wei at the Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, associated with Beijing Tiantan Hospital, Shanghai Institute of Microsystem and Information Technology and NeuroXess, a high-tech life science company specializing in BCI technologies, the cationic alternating peptide electrode coating preserves electrode flexibility and conductivity, while offering antibacterial, anti-protein adsorption and immune-rejection-inhibiting functions. 
A 300-day animal study showed the coating's effectiveness. Bare electrodes experienced a sharp loss of recording capability after 90 days of implantation and could barely detect neuronal signals after 300 days. In contrast, coated electrodes maintained stable recording channels and consistently captured neural signals above 155 microvolts. 
In terms of neural modulation, after 300 days of implantation, conventional electrodes required a current of 100 microamps to induce weak limb responses, while coated electrodes triggered clear movements with only 2 microamps, improving modulation efficiency by 50 times. 
Notably, the removal tests highlighted a key advantage of the coating that electrodes no longer form irreversible bonds with brain tissue. In the experiments, the coated electrodes were removed intact, with minimal damage to the surrounding brain tissue, Zhang told the Global Times on Sunday.
。仅24日晚间，便有115家上市公司发布中期利润分配方案或实施公告。　　据中新经纬统计，截至25日发稿，超过450家A股公司公布了中期分红方案，合计分红金额超2300亿元。其中，已经有30余家上市公司实施完毕。　　中国移动分红金额暂列第一　　30余家公司中期派息超10亿　　从分红总额来看，中国移动、中国平安、中国电信、中国石化、紫金矿业的中期分红总额超百亿元。据Wind数据统计，2026年中期分红金额超10亿元的公司共计有31家。　　中国移动日前公告显示，公司充分考虑盈利能力、现金流状况及未来发展需要，决定2026年中期派息每股2.51元人民币(含税)，同比增长0.3%，合计将派发中期股息544.26亿元。这一金额也让中国移动暂列上市公司中期分红首位。

二 | 　　2026年上半年，中国移动归母净利润达789.34亿元，据此计算，中期分红金额占当期归母净利润的比例超68%。　　排名第二的是中国平安。根据8月20日公告，截至2026年6月30日，中国平安可供股东分配利润为1194.24亿元人民币。经董事会决议，中国平安派发2026年中期现金股息每股0.98元(含税)，预计派发总额为177.45亿元。

三 | 　　此外，中国电信拟派发146.96亿元，中国石化拟派发126.89亿元。紫金矿业中期分红111亿元，已于8月21日实施完毕。　　值得注意的是，紫金矿业中期分红是以2026年一季报为编制基础，该季度合并报表归属于母公司股东净利润为200.79亿元，母公司期末未分配利润为185.92亿元。据公告介绍，为让广大投资者尽早分享公司经营发展成果，公司本次中期利润分配时点较以往大幅提前。　　中信证券、宁德时代、国泰海通、海康威视四家上市公司中期分红金额超50亿元。其中，宁德时代中期分红61.80亿元和海康威视中期分红50.41亿元已于近日实施完毕。　　中期拟分红金额超过30亿元的有平安银行(48.32亿元)、中国中车(31.57亿元)、恒逸石化(30.96亿元)、宝丰能源(30.55亿元)、南山铝业(30.43亿元)等多家上市公司。　　从每股派现金额来看，吉比特以每股派发现金红利10元位居榜首，较去年同期的每股6.6元进一步提升，合计派发现金红利预计为7.18亿元，占2026年上半年归属于上市公司股东净利润的65.74%。　　160余家上市公司股息率超过5%　　据Wind数据，按8月24日收盘价计算，目前A股共有 167家 上市公司股息率(TTM)超过5%。股息率最高的是荣晟环保(14.17%)，其次是南山铝业(13.74%)和达仁堂(13.41%)。　　股息率高的企业中不乏蓝筹股，如格力电器(7.23%)、五粮液(7.21%)、美的集团(4.90%)、招商银行(5.09%)、中国建筑(6.15%)、双汇发展(5.71%)、伊利股份(5.34%)等。　　按行业来看，高股息率公司主要集中在银行、公用事业/能源、家电、食品饮料等行业。

四 | 　　从券商研报来看，多家券商均将“高股息”作为个股或行业推荐重要原因之一。

五 | 华泰证券近期发布的研报指出，7月以来，高股息资产迎来阶段性修复，核心驱动在于资金再平衡。　　上述研报指出，进入7月，获利资金兑现以及高位板块波动增大，共同推动资金由高弹性成长向低估值价值板块回流；持仓中报披露后，机构投资者逐步对前期偏离较大的组合进行再平衡。成长板块权重快速提升后，组合波动与行业集中度明显上升，部分资金出于控制回撤、锁定收益和降低风格暴露的考虑，增配低波动、低相关性的红利资产；中长期资金持续入市以及绝对收益资金降低组合波动的需求，为银行、公用事业等低波红利板块提供了增量支撑。　　作者：罗琨　　来源：“中新经纬”微信公众号。

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Published on:20:06:28