Article
Nanoscience & Nanotechnology
A. M. Gabay, G. C. Hadjipanayis
Summary: ThMn12-type (Sm,Zr)(1)(Fe,Co,Ti)(12) compounds show potential as powerful permanent magnets. The study found that reduction-diffusion temperature plays a significant role in influencing crystallite size, coercivity, and the fraction of monocrystalline particles. Particles synthesized at 1220 degrees C exhibited excellent magnetic properties.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Multidisciplinary
Jiang Zou, Lifeng Wang, Juan He, Bo Wu, Quan Xie
Summary: This study prepared magnetic materials with different dopants using ball milling and sintering processes, and investigated their crystal structures, electrical conductivity, and magnetic properties using various testing methods. The results showed that the dopants enhanced the electrical conductivity and magnetic properties of the materials. Additionally, an improvement in permeability was observed for specific doped alloys.
Article
Chemistry, Physical
Branislav Kunca, Jozef Marcin, Richard Parsons, Peter Svec, Peter Svec sr, Kiyonori Suzuki, Ivan Skorvanek
Summary: Ultra-rapid annealing (URA) with pre-heated massive Cu blocks has been found to be effective in producing Fe-(Co)-B based nanocrystalline alloys with reduced metalloid content and desirable magnetic properties. However, further research is needed to understand the behavior of these alloys at elevated temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Marcelo Augusto Malagutti, Vagner Zeizer Carvalho Paes, Julian Geshev, Carlos Eduardo Maduro de Campos
Summary: The study demonstrates the mechanochemical synthesis of all cobalt tellurides' phases and characterizes their structural, microstructural, and magnetic properties. Different cobalt telluride phases with varying weight proportions were synthesized, with sizes in the range of tens of nanometers. The research also showed that the phases exhibit stable structural and microstructural properties over a two-year storage period.
Article
Chemistry, Applied
C. F. Toncon-Leal, J. F. Munera, J. J. Arroyo-Gomez, K. Sapag
Summary: Iron, cobalt, and bimetallic catalysts were synthesized and impregnated on mesoporous silica support to study their behavior in Fischer-Tropsch Synthesis. Bimetallic catalysts exhibited higher catalytic activity than monometallic catalysts.
Article
Materials Science, Multidisciplinary
Maria del Carmen Aguirre, Silvia E. Urreta, Paula G. Bercoff
Summary: The magnetization reversal mechanisms in electrodeposited Co100-xFex (x = 0; 20; 30; 50) films were investigated. The films containing iron showed thinner thickness, lower texture, and smaller grain size, leading to larger coercivities. The angular dependence of coercivity exhibited a transition from domain wall depinning to inverse domain nucleation inside the grains.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
M. Kawano, K. Hirama, K. Kumakura
Summary: We investigated the magnetic properties of Fe nanoparticles embedded in diamond (111) thin films. The Fe nanoparticles have body-centered cubic structures with median particle diameters ranging from 9 to 26 nm. Magnetization measurements revealed that these particles exhibit large magnetic anisotropy and undergo a transition from ferromagnetic to superparamagnetic state at blocking temperatures between 480 and around 1000 K, depending on their particle diameters. These magnetic properties are well explained by coherent magnetization rotation models proposed by Stoner-Wohlfarth and Neel.
Article
Chemistry, Physical
Hong Woo Lee, Ga-Un Jeong, Min-Cheol Kim, Donghun Kim, Sooyeon Kim, Sang Soo Han
Summary: A large amount of ammonia has been produced by the Haber-Bosch method, but a new environmentally friendly alternative is needed due to high energy cost and greenhouse gas emissions. The mechanochemical ball-milling method, simulated by molecular dynamics with reactive force field, enhances N2 dissociation and NHx formation on Fe(110) through strain, while strain has negligible effect on Fe(111). Mechanical strain transfers energy to Fe catalysts and N atoms on Fe surfaces, activating NHx formation. The study also reveals a new mechanism for NH formation through direct interaction between dissociated N atom and H2 molecule. Mechanochemical process on Fe catalysts shows promise for NH3 synthesis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Qingfang Huang, Qingzheng Jiang, Yao Shi, Sajjad Ur Rehman, Xing Wei, Zhixiang Li, Dawei Shi, Deqin Xu, Zhenchen Zhong
Summary: Post-sinter annealing is crucial for improving the microstructures and magnetic properties of NdFeB-based sintered permanent magnetic materials. It can significantly increase the intrinsic coercive force of the magnets. However, post-sinter annealing may cause a slight decrease in remanence, mainly due to the deteriorated orientation degree and reduced volume fraction of the hard magnetic main phases.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Andrey G. Dormidontov, Natalia B. Kolchugina, Nikolay A. Dormidontov, Mark V. Zheleznyi, Anna S. Bakulina, Pavel A. Prokofev, Aleksandr S. Andreenko, Yury V. Milov, Nikolay N. Sysoev
Summary: Various experimental methods were used to study the microstructure, chemical composition, and magnetic properties of high-coercivity permanent magnetic materials (Sm,Zr)(Co,Cu,Fe)(z), revealing the relationships between different structural components and their impact on sample performance.
Article
Chemistry, Multidisciplinary
Georgia Basina, Hafsa Khurshid, Nikolaos Tzitzios, George Hadjipanayis, Vasileios Tzitzios
Summary: Fe-based colloids with a core/shell structure consisting of metallic iron and iron oxide were synthesized using a hot injection reaction of iron pentacarbonyl in a multi-surfactant mixture. The size of the colloidal particles, crystal structure, morphology, and magnetic properties were studied, with higher injection temperatures enhancing stability and resistance against oxidation. Functionalization of the colloids' surface in a nonpolar solvent resulted in a stable dispersion.
Article
Materials Science, Multidisciplinary
Wenting Huang, Christophe Gatel, Zi-An Li, Gunther Richter
Summary: Fe and Co nano-whiskers and Co platelets were synthesized without using any template or catalyst via physical vapor deposition. The synthesized whiskers exhibited single crystal structures and magnetic single domain structures, while both FCC and HCP crystal structures were found in the Co whiskers. Vortex state was observed in a high symmetry platelet.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Yu-Cai Wu, Xi -Chun Zhong, Yuan-Xin Li, Xuan Huang, Jiao-Hong Huang, Cui-Lan Liu, Zhong-Wu Liu, Wan-Qi Qiu, Ming -Long Zhong, Zhen-Chen Zhong, R. V. Ramanujan
Summary: LaFe11.8Si1.2/16wt%La65Co35 samples were prepared by spark plasma sintering (SPS) and subsequent annealing. The La65Co35 binder increased the 1:13 phase content, and the alpha-Fe phase formed and disappeared during annealing. The sample annealed for 0.5 h showed a distinct core-shell structure, desirable table-like (-Delta S-M) -T curve, and higher RC value. The diffusion of Co was hindered by the growth of La5Si3 phase. Samples annealed for 24 h achieved larger (-Delta S-M)(max) and (sigma(bc))(max) values. The method combining SPS and diffusion annealing is promising for preparing La-Fe-Si based magnetocaloric composites with good properties.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Multidisciplinary Sciences
Tetsuji Saito
Summary: This study focuses on improving SmFe3-based alloys using melt-spinning. By adding zirconium, the coercivity and remanence of the melt-spun ribbons were enhanced, while the Curie temperature slightly decreased. The optimally annealed alloys achieved a coercivity of 7.8 kOe, a remanence of 6.0 kG, and a Curie temperature of 680 K.
Article
Chemistry, Physical
Qiangfeng Li, Chao Wang, Hongsheng Chen, Yikun Fang, Lei Wang, Meng Zheng, Yifei Xiao, Yue Zhang, George C. Hadjipanayis, Minggang Zhu, Wei Li
Summary: This study investigated the stability of the 1:7 H phase in Fe-rich Sm2Co17-type magnets and its effect on the precipitation of the 1:5 H precipitates. The results showed that the stability of the 1:7 H phase decreases with the increasing Fe content. When the Fe content exceeds 22 wt%, both the 2:17 R phase and a lot of 2:17 R' phase are found in the solution-treated magnets. The growth of 2:17 R nanotwins in the solution-treated magnets leads to a decrease in the density of initial defects as the Fe content increases.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Vijaykumar B. Varma, Suneel K. Cheekati, Mekap S. Pattanaik, Raju V. Ramanujan
Summary: Efficient thermal management is an urgent need for many energy-generating and consuming devices and systems. This study proposes a magnetic nanofluid cooling (MNFC) device that provides the highest passive cooling for high-power LEDs, demonstrated through experimental and simulation investigations. The study quantifies the role of hydrodynamic and magnetic properties on the MNFC device performance and develops a material selection map for efficient MNFC devices. The developed device and passive cooling methodology enhance the efficiency and lifetime of high-power LEDs by removing waste heat.
Article
Materials Science, Multidisciplinary
Ling Qiao, R. Ramanujan, Jingchuan Zhu
Summary: This study implemented a machine learning approach to investigate the relationship between temperature, alloying elements, and yield strength in multi-component alloys. Based on the findings, AlxCrFeNi medium-entropy alloys (MEAs) were developed, which exhibited a two-phase structure formed through spinodal decomposition mechanism. The mechanical properties of the developed MEAs, particularly with high Al content, showed significant improvement at elevated temperatures. The oxidation behavior and mechanism of the AlxCrFeNi MEAs (x > 0.8) at 1000 degrees C were also explored. Overall, this work has identified a promising family of MEAs that offer low density and excellent mechanical properties for high temperature structural applications.
Article
Chemistry, Physical
Ling Qiao, R. Ramanujan, Jingchuan Zhu
Summary: This study investigated the hot compressive deformation behavior of Co-free Fe2.5Ni2.5CrAl multi-principal element alloys and determined the optimum processing parameters, as well as revealed the main deformation mechanism.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Ling Qiao, R. V. Ramanujan, Jingchuan Zhu
Summary: In this study, the microstructure, hardness, and wear resistance of Fe2Ni2CrAl multi-principal elements alloy were investigated. The alloy showed a dual-phase structure and exhibited good wear resistance. Molecular dynamics simulations were also utilized to analyze the wear behavior at the nanoscale. The findings provided valuable insights into the wear mechanisms of Fe2Ni2CrAl alloys.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
V. Chaudhary, M. S. K. K. Y. Nartu, S. Dasari, S. M. Varahabhatla, A. Sharma, M. Radhakrishnan, S. A. Mantri, S. Gorsse, N. B. Dahotre, R. V. Ramanujan, R. Banerjee
Summary: Varying the Al content significantly influences the microstructure, magnetic properties, and microhardness of Alx(CoFeNi) (x = 0, 10, 30) complex concentrated alloys. The heat treated Al10(CoFeNi) CCA exhibited improved saturation magnetization, Curie temperature, and microhardness due to its hierarchical FCC/L12+BCC/B2 heterostructure. However, there was no significant change in the properties of heat treated CoFeNi and Al30(CoFeNi) CCA. These findings can be explained by thermodynamic modeling of phase stability.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Andras Kovacs, Nithin B. Venkataraman, Varun Chaudhary, Sriswaroop Dasari, Thibaud Denneulin, R. V. Ramanujan, Rajarshi Banerjee, Rafal E. Dunin-Borkowski
Summary: The microstructural features significantly affect the coercivity of magnetic alloys. While the influence of homophase boundaries on magnetic domain wall pinning is well understood, the role of heterophase interfaces on domain wall motion is complex and not well known. This study used advanced electron microscopy techniques to reveal the dramatic changes in the magnetization reversal process in an Al0.3CoFeNi magnetic complex concentrated alloy (CCA) and its impact on coercivity. The heterophase FCC/BCC interfaces were found to have a stronger effect on coercivity compared to isostructural chemically ordered/disordered interfaces, providing valuable insights for the rational design of microstructure in magnetic alloys.
Article
Engineering, Mechanical
Xuesong Xu, Hongsheng Ding, Haitao Huang, He Liang, R. V. Ramanujan, Ruirun Chen, Jingjie Guo, Hengzhi Fu
Summary: The deformation mechanism responsible for the high-cycle rotating bending fatigue of a high-Nb TiAl alloy was studied. Superlattice dislocations [0 1 1] and twinning dominated the fatigue deformation in the gamma phase. Dislocations 11 0 in the B2 phase were induced by twins in the adjacent gamma phase due to the low stacking fault energy caused by the high Nb content. Stress transfer between adjacent phases was achieved through atomic rearrangement of the interface by twinning. Local stresses were accommodated by continuous dislocation slip in the B2 phase, deformation twins, and twin intersections in the gamma phase.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Nanoscience & Nanotechnology
M. Radhakrishnan, M. McKinstry, V. Chaudhary, M. S. K. K. Y. Nartu, K. V. Mani Krishna, R. V. Ramanujan, R. Banerjee, Narendra B. Dahotre
Summary: The soft magnetic behavior of CoCrxFeNi alloys deposited by laser directed energy deposition was studied. It was found that the saturation magnetization of these alloys decreased with increasing Cr content and exhibited paramagnetic behavior at room temperature. The Curie temperature of the ferromagnetic CoFeNi alloy linearly decreased with Cr content, while the paramagnetic equiatomic alloy had a ferromagnetic transition temperature of 94 K. The as-deposited alloys showed low coercivity values irrespective of the Cr content. The results suggest that the magnetic behavior of the CoFeNi alloy can be tuned with the addition of antiferromagnetic Cr, and the additive manufacturing route is effective for rapidly processing alloys with desired compositions.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
V. Sharma, X. Tan, P. S. Sankara Rama Krishnan, Sravya Tekumalla, M. Duchamp, Xuesong Xu, Hongsheng Ding, V. Chaudhary, R. V. Ramanujan
Summary: Bulk Ti-48Al alloy samples were prepared by high energy ball milling and spark plasma sintering, and their microstructure, phase evolution and mechanical properties were studied. The resulting alloy exhibited an equiaxed fine grain structure and higher nanohardness, wear resistance and yield pressure compared to the as-cast counterpart. The combination of powder size reduction during ball milling and microstructural development during sintering resulted in improved properties. Therefore, the HBM+SPS processing approach shows promise for the manufacture of high hardness bulk TiAl alloys.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Soumya Ranjan Mishra, Li Ping Tan, Vikrant Trivedi, Manjusha Battabyal, P. S. Sankara Rama Krishnan, Durga Venkata Maheswar Repaka, Satyesh Kumar Yadav, Raju Vijayaraghavan Ramanujan, Budaraju Srinivasa Murty
Summary: The effect of doping on the thermoelectric properties of HH HEA Ti2NiCoSnSb was studied. Sb doping reduced thermal conductivity. Mass scattering by heavy (Ta, Zr) and light (Al) dopants was studied to further lower thermal conductivity. Zr-doped samples showed high HH phase content and low-lattice thermal conductivity of 1.9 W/(m·K). The poor solubility of Ta enhanced electrical properties. NiAl phase in Al-doped samples improved the power factor value significantly. A maximum ZT of 0.29 was achieved in all doped systems, with an optimum dopant level of Zr (25%), Ta (7.5%), and Al (10%).
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Shakti P. Padhy, Li Ping Tan, Vijaykumar B. Varma, V. Chaudhary, Z. Tsakadze, R. V. Ramanujan
Summary: This study developed a new high-throughput chemical synthesis method called hyper-heuristic combinatorial flow synthesis (HCFS). Using this method, a library of 91 Fe-Co-Ni powder compositions was successfully synthesized and their physical properties were evaluated using high-throughput screening and sintering methods. The study identified promising new Fe-Co-Ni compositions with multi-property optimization.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.
