Results 71 to 80 of about 11,609 (246)

Raman enhancement on ultra-clean graphene quantum dots produced by quasi-equilibrium plasma-enhanced chemical vapor deposition

Nature Communications, 2018
Surface-enhanced Raman spectroscopy (SERS) is a promising technology for sensitive optical sensors, generally using rough metal films. Here, Liu et al.
Donghua Liu, Xiaosong Chen, Yibin Hu, Tai Sun, Zhibo Song, Yujie Zheng, Yongbin Cao, Zhi Cai, Min Cao, Lan Peng, Yuli Huang, Lei Du, Wuli Yang, Gang Chen, Dapeng Wei, Andrew Thye Shen Wee, Dacheng Wei   +16 more
doaj   +1 more source

Sulfate‐Directed Silver Dendrites with Enhanced Stability for Ultrasensitive SERS‐Based Therapeutic Drug Monitoring

Advanced Science, EarlyView.
This study presents sulfate‐directed silver dendrites (s‐AgDs) as oxidation‐resistant SERS substrates with long‐term stability, reproducibility, and sub‐picomolar sensitivity. Sulfate ions guide anisotropic growth and protect the surface, enabling improved performance over 7 months under ambient conditions.
Aradhana Dwivedi, Jan Dellith, Anna Makarova, Samir F. El‐Mashtoly, Juergen Popp, Vladimir Sivakov, Dana Cialla‐May   +6 more
wiley   +1 more source

Simultaneous Imaging of Cu+ and Cu2+ in Neural Cells Using DNAzyme Probes Reveals Mechanistic Link Between Copper Redox Imbalance and Amyloid Pathology

Angewandte Chemie, EarlyView.
We develop Cu+‐ and Cu2+‐specific DNAzyme fluorescent probes to visualize both copper redox states in living neurons. Aβ oligomers cause intracellular copper overload, triggering FDX1 dependent cuproptosis and generating ROS. This work links copper redox imbalance with Aβ pathology and offers a selective, sensitive way to monitor copper homeostasis in ...
Xiangli Shao, Zhenglin Yang, Zhihao Xu, Weijie Guo, Whitney Lewis, Boyi Gan, Yi Lu   +6 more
wiley   +2 more sources

Attenuated Bacteria‐Based Tumor Therapy: Clinical Application Risks, Marketing Approval Restrictions, and Coping Strategies

Advanced Science, EarlyView.
This review comprehensively overviews attenuated bacteria‐based tumor therapy, highlighting key methodologies and recent progress. It examines strategies for enhancing safety, stabilizing efficacy, optimizing manufacturing, and navigating regulatory pathways.
Yucheng Liu, Junhong Yao, Jiaxin Deng, Minjie Zhou, Kaiyue Shen, Shishuo Sun, Xiaoge Gao, Qing Zhang, Haiheng Xu   +8 more
wiley   +1 more source

Application of surface-enhanced Raman spectroscopy in food safety detection

Shipin yu jixie
Based on Raman scattering phenomenon, surface-enhanced Raman spectroscopy （SERS） detection technology enhances "fingerprint" information of tested substance by adsorbing it on the surface of SERS substrate to achieve trace detection.
WANG Liuliu, SUN Fangtao
doaj   +1 more source

Machine Learning‐Enhanced Analysis of Exosomal Surface Sialic Acid Using Surface‐Enhanced Raman Spectroscopy for Ovarian Cancer Diagnosis and Therapeutic Monitoring

Advanced Science, EarlyView.
Machine learning‐assisted surface‐enhanced Raman spectroscopy analysis of exosomal sialic acid for ovarian cancer diagnosis, as well as independent monitoring of exosomal sialic acid expression levels across different treatment periods, reveals a potential correlation with treatment response.
Lili Cong, Jiaqi Wang, Sijun Huang, Xiaxia Man, Yi Guo, Shuping Xu, Songling Zhang   +6 more
wiley   +1 more source

Optical properties of gold nanostructures: Application to the surface enhanced Raman scattering and to the development of a nanobiosensor

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011
The application of Surface Enhanced Raman Spectroscopy (SERS) for detection of biomolecules is a subject of intense current research worldwide. In this article the observation of the dependence of the Raman enhancement versus the nanoparticle size is ...
M. Lamy de la Chapelle
doaj   +1 more source

Atomically Precise Clusterzymes: A Programmable Optoelectronic Platform for Neuroscience

Advanced Science, EarlyView.
Atomically precise clusterzymes, engineered via atomic and ligand design, serve as programmable platforms for neuroscience applications. They demonstrate tailored biocatalysis for neuroinflammation, tunable optical properties for deep‐tissue bioimaging and 3D visualization, and enhanced charge transfer for brain–computer interfaces.
Si Sun, Di Liu, Sufei Zhou, Yang Wang, Hao Wang, Ziliang Zheng, Xiao‐Dong Zhang   +6 more
wiley   +1 more source

Ni Single‐Atom Modulation of Ti‐O Covalency Boosts Ammonia Oxidation Electrocatalysis

Advanced Science, EarlyView.
A Ni single‐atom‐induced enhancement of Ti‐O covalency in Ni SAC@TiO2 generates abundant active sites and promotes selective NHx‐NHy mediated N2 evolution while suppressing poisonous NOx formation, achieving nearly doubled AOR activity with excellent durability.
Subhash Chandra Shit, Dayoung Kwon, Nhi Thi Yen Phan, Hyo Won Kim, Jucheol Park, Jeong‐hyeon Lee, Hyeyoung Shin, Wooyul Kim   +7 more
wiley   +1 more source

Deciphering Intricacies in Directional CO2 Conversion From Electrolysis to CO2 Batteries

Advanced Energy Materials, EarlyView.
This review will delve into the inherent connections and distinctions of CO2‐directed conversion in ECO2RR and CO2 batteries, in terms of product types, catalyst selection, catalytic mechanisms, and electrochemical performances, while proposing a benchmarking framework for the evaluation of CO2 batteries and innovative CO2 battery configurations for ...
Changfan Xu, Huaping Zhao, Lizhuang Chen, Weidong Shi, Guosheng Shao, Yong Lei   +5 more
wiley   +1 more source