Results 41 to 50 of about 7,335 (259)

Observation of superparamagnetism in coexistence with quantum anomalous Hall C = ±1 and C = 0 Chern states [PDF]

, 2017
Simultaneous transport and scanning nanoSQUID-on-tip magnetic imaging studies in Cr-(Bi,Sb)2Te3 modulation-doped films reveal the presence of superparamagnetic order within the quantum anomalous Hall regime.
E. Lachman, M. Mogi, J. Sarkar, A. Uri, K. Bagani, Y. Anahory, Y. Myasoedov, M. Huber, A. Tsukazaki, M. Kawasaki, Y. Tokura, E. Zeldov   +11 more
semanticscholar   +1 more source

Synthesis and characterization of PVP-functionalized superparamagnetic Fe3O4 nanoparticles as an MRI contrast agent

eXPRESS Polymer Letters, 2010
The magnetite (Fe3O4) nanoparticles (MNPs) coated with poly(N-vinyl pyrrolidone) (PVP) via covalent bonds were prepared as T2 contrast agent for magnetic resonance imaging (MRI).
doaj   +1 more source

Preparation and Characteristics of γ-Fe2O3/Polyaniline-Curcumin Composites

Metals, 2015
Superparamagnetic nanomaterials are showing great prospects in medical treatments with targeting medicines. A new conductive superparamagnetic nanocomposite, γ-Fe2O3/polyaniline-curcumin (γ-Fe2O3/PANI-curcumin), was prepared by using the interaction ...
Yongli Li, Chunxia Zhu, Jinqing Kan
doaj   +1 more source

Hybrid Nanostructured Magnetite Nanoparticles: From Bio-Detection and Theragnostics to Regenerative Medicine

Magnetochemistry, 2020
Nanotechnology offers the possibility of operating on the same scale length at which biological processes occur, allowing to interfere, manipulate or study cellular events in disease or healthy conditions.
Yolanda Piñeiro, Manuel González Gómez, Lisandra de Castro Alves, Angela Arnosa Prieto, Pelayo García Acevedo, Román Seco Gudiña, Julieta Puig, Carmen Teijeiro, Susana Yáñez Vilar, José Rivas   +9 more
doaj   +1 more source

SUPERPARAMAGNETISM, SPIN GLASS BEHAVIOUR AND SPIN RELAXATION IN LiAl3.6Fe1.4O8 : A MOSSBAUER STUDY

, 1988
Mossbauer spectroscopy has been used to distinctly show the presence of superparamagnetism, spin glass freezing, and ionic spin spin relaxation in LiAl3.6Fe1 ...
S. C. Bhargava
core   +1 more source

Magnetic Bead—Magic Bullet

Micromachines, 2016
Microfluidics is assumed to be one of the leading and most promising areas of research since the early 1990s. In microfluidic systems, small spherical magnetic particles with superparamagnetic properties, called magnetic beads, play an important role in ...
Christine Ruffert
doaj   +1 more source

Probing Near‐Field EM Fluctuations in Superparamagnetic CoFeB With NV Quantum Dephasometry

Advanced Optical Materials, EarlyView.
We non‐invasively investigate the superparamagnetic spin dynamics of a 1.1 nm CoFeB layer by probing its near‐field EM fluctuations using NV centers‐based quantum dephasometry. Our findings are further supported by theoretical modeling and SQUID‐based magnetization characterization. These results provide critical insight into the magnetization dynamics
Shoaib Mahmud, Wei Zhang, Pronoy Das, Angshuman Deka, Wenbo Sun, Zubin Jacob   +5 more
wiley   +1 more source

2D double aeolotropic conductive Janus pellicle with multi-functionality then derived 3D dual-wall Janus-type tube

eXPRESS Polymer Letters, 2020
Two-dimensional (2D) bilayer Janus pellicle (denoted as BJP) of concurrent double aeolotropic electrical conduction, superparamagnetism and luminescence is designed and constructed via electrospinning by using one-dimensional (1D) nanofibers and Janus ...
H. N. Qi, Q. L. Ma, Y. R. Xie, Y. Song, J. Tian, W. S. Yu, X. T. Dong, D. Li, G. X. Liu, J. X. Wang   +9 more
doaj   +1 more source

Modulation of Crystallinity and Optical Properties in Composite Materials Combining Iron Oxide Nanoparticles and Dye-Containing Covalent Organic Frameworks

Organic Materials, 2021
Two series of organic–inorganic composite materials were synthesized through solvothermal imine condensation between diketopyrrolopyrrole dialdehyde DPP-1 and 5,10,15,20-tetrakis(4-aminophenyl)porphyrin (TAPP) in the presence of varying amounts of either
Roberto Sánchez-Naya, Vladimir Stepanenko, Karl Mandel, Florian Beuerle   +3 more
doaj   +1 more source

Toward Wireless Implantable Robotic Systems Driven by Magnetic Field for Personalized Therapy

Advanced Robotics Research, EarlyView.
Robotic materials are playing an increasingly vital role in enabling sensing and actuation at small scales. This perspective highlights recent advances in magnetic materials and magnetically actuated devices for wireless sensing, actuation, and energy harvesting toward implantable robotic systems for closed‐loop therapy.
Yusheng Wang, Ruijian Ge, Xiaoguang Dong
wiley   +1 more source