全球领先的人机界面解决方案开发商Synaptics近日宣布,开始提供其全新6x6mm Natural ID FS4500指纹传感器解决方案的样品。该解决方案可透过玻璃或陶瓷按键（覆盖玻璃厚度可高达300微米）,提供安全的生物识别功能。随着智能手机越来越...全球领先的人机界面解决方案开发商Synaptics近日宣布,开始提供其全新6x6mm Natural ID FS4500指纹传感器解决方案的样品。该解决方案可透过玻璃或陶瓷按键（覆盖玻璃厚度可高达300微米）,提供安全的生物识别功能。随着智能手机越来越多地采用耐用型玻璃按键,Synaptics将凭借行业领先的安全特性,提供具备多种形状、尺寸和支持不同表面材质的产品,来满足OEM厂商多样化的需求。展开更多
Based on the layer-by-layer self-assembly of positively charged cetyltrimethylammonium bromide (CTAB) wrapped gold na- norods (AuNRs) and negatively charged superoxide dismutase (SOD) from their aqueous solutions on c...Based on the layer-by-layer self-assembly of positively charged cetyltrimethylammonium bromide (CTAB) wrapped gold na- norods (AuNRs) and negatively charged superoxide dismutase (SOD) from their aqueous solutions on cysteine modified gold electrode (Cys/Au), a third generation electrochemical biosensor ((SOD/AuNRs)2/Cys/Au) for superoxide anion (O2·-) was developed. The two layers assembly of SOD/AuNRs can significantly enhance the direct electron transfer between SOD and the electrode. The functional enzymatic activities of the SOD offer an electrochemical approach to the determination of O2·-. In the reductive regions, the proposed sensor exhibits excellent analytical performances, such as wide linear range (200 nM to 0.2 mM O2·-), low detection limit (100 nM O2·-), high sensitivity (22.11 nA cm-2 μM-1), short response time (less than 5 s), good stability and reproducibility, while no obvious interferences are caused by commonly met interfering species including hydrogen peroxide (H2O2), uric acid (UA) and ascorbic acid (AA).展开更多
文摘全球领先的人机界面解决方案开发商Synaptics近日宣布,开始提供其全新6x6mm Natural ID FS4500指纹传感器解决方案的样品。该解决方案可透过玻璃或陶瓷按键（覆盖玻璃厚度可高达300微米）,提供安全的生物识别功能。随着智能手机越来越多地采用耐用型玻璃按键,Synaptics将凭借行业领先的安全特性,提供具备多种形状、尺寸和支持不同表面材质的产品,来满足OEM厂商多样化的需求。
基金supported by the National Natural Science Foundation of China (20805013, 20905024&21075031)the National Basic Research Program of China (2009CB421601 & 2011CB911002)the Natural Science Foundation of Hunan Province (09JJ4006 & 09JJ4007)
文摘Based on the layer-by-layer self-assembly of positively charged cetyltrimethylammonium bromide (CTAB) wrapped gold na- norods (AuNRs) and negatively charged superoxide dismutase (SOD) from their aqueous solutions on cysteine modified gold electrode (Cys/Au), a third generation electrochemical biosensor ((SOD/AuNRs)2/Cys/Au) for superoxide anion (O2·-) was developed. The two layers assembly of SOD/AuNRs can significantly enhance the direct electron transfer between SOD and the electrode. The functional enzymatic activities of the SOD offer an electrochemical approach to the determination of O2·-. In the reductive regions, the proposed sensor exhibits excellent analytical performances, such as wide linear range (200 nM to 0.2 mM O2·-), low detection limit (100 nM O2·-), high sensitivity (22.11 nA cm-2 μM-1), short response time (less than 5 s), good stability and reproducibility, while no obvious interferences are caused by commonly met interfering species including hydrogen peroxide (H2O2), uric acid (UA) and ascorbic acid (AA).
