An organic approach for nanostructured multiferroics

Qin, Wei; Xu, Beibei; Ren, Shenqiang

doi:10.1039/c5nr01435b

Cited by 39 publications

(25 citation statements)

References 96 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…; Qi et al. ). Multiferroic materials are known to modulate both magnetic and electric orders such as: ferromagnetism (a spontaneous magnetism that is switchable by an applied magnetic field), ferroelectricity (a spontaneous electric polarization that is switchable by an applied electromagnetic field) occurring in the same phase (Hur et al.…”

Section: Introductionmentioning

confidence: 98%

“…(Papasimakis et al 2016). The interplay of both electric and magnetic (multiferroic) orders in metal-organic frameworks has intrigued biophysicists and has led to a pursuit of a new class of multiferroics beyond the current solid-state or electronic applications (Fiebig et al 2002;Kimura et al 2003;Cheong and Mostovoy 2007;Tian et al 2014;Qi et al 2015). Multiferroic materials are known to modulate both magnetic and electric orders such as: ferromagnetism (a spontaneous magnetism that is switchable by an applied magnetic field), ferroelectricity (a spontaneous electric polarization that is switchable by an applied electromagnetic field) occurring in the same phase (Hur et al 2004;Spaldin and Fiebig 2005).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bio-field array: a dielectrophoretic electromagnetic toroidal excitation to restore and maintain the golden ratio in human erythrocytes

2018

View full text Add to dashboard Cite

Erythrocytes must maintain a biconcave discoid shape in order to efficiently deliver oxygen (O2) molecules and to recycle carbon dioxide (CO 2) molecules. The erythrocyte is a small toroidal dielectrophoretic (DEP) electromagnetic field (EMF) driven cell that maintains its zeta potential (ζ) with a dielectric constant (ԑ) between a negatively charged plasma membrane surface and the positively charged adjacent Stern layer. Here, we propose that zeta potential is also driven by both ferroelectric influences (chloride ion) and ferromagnetic influences (serum iron driven). The Golden Ratio, a function of Phi φ, offers a geometrical mathematical measure within the distinct and desired curvature of the red blood cell that is governed by this zeta potential and is required for the efficient recycling of CO 2 in our bodies. The Bio‐Field Array (BFA) shows potential to both drive/fuel the zeta potential and restore the Golden Ratio in human erythrocytes thereby leading to more efficient recycling of CO 2. Live Blood Analyses and serum CO 2 levels from twenty human subjects that participated in immersion therapy sessions with the BFA for 2 weeks (six sessions) were analyzed. Live Blood Analyses (LBA) and serum blood analyses performed before and after the BFA immersion therapy sessions in the BFA pilot study participants showed reversal of erythrocyte rheological alterations (per RBC metric; P = 0.00000075), a morphological return to the Golden Ratio and a significant decrease in serum CO 2 (P = 0.017) in these participants. Immersion therapy sessions with the BFA show potential to modulate zeta potential, restore this newly defined Golden Ratio and reduce rheological alterations in human erythrocytes.

show abstract

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Bio-field array: a dielectrophoretic electromagnetic toroidal excitation to restore and maintain the golden ratio in human erythrocytes

2018

View full text Add to dashboard Cite

show abstract

“…Вперше МЕ-ефект був експериментально зафіксований у 1960 році для сегнетомагнетика Cr2O3, а з часом і для інших сегнетомагнетиків [7]. Проте однофазні мультифероїки (матеріали, що одночасно проявляють фероелектричні, феромагнітні та феропружні властивості [1,8,9] [9,10]: 0-3, 1-3 та 2-2 композити, у яких під дією магнітного поля внаслідок явища магнітострикції у феритовому компоненті виникають механічні напруження, які передаються у п'єзоелектричну фазу і завдяки п'єзоелектричному ефекту спричиняють виникнення поляризації [3,9,11].…”

Section: вступunclassified

“…Оскільки МЕ-ефект композитів тісно пов'язаний з механічним з'єднанням через межу розділу між магнітострикційною та п'єзоелектричною фазами, одним із перспективних шляхів посилення МЕ-ефекту є збільшення межі розділу фаз за рахунок використання нанорозмірних функціональних структур [3,13,14]. Поряд із цим активно розвивається підхід формування нанокомпозиційних магнітоелектричних полімерних матеріалів [2,8,10,[14][15][16][17][18], основними перевагами якого є можливість розроблення композитів різної форми з наперед заданими механічними властивостями, гнучкістю, універсальністю, легкістю та низькою вартістю виробництва і у деяких випадках навіть біосумісністю [2,17,18].…”

Section: вступunclassified

Магнітоелектричні Нанокомпозити З Полімерною Матрицею Як Перспективний Напрямок Розвитку Сучасного Матеріалознавства

Umerova¹,

Ragulya²

2017

CSL

View full text Add to dashboard Cite

Umerova, S.O., Ragulya, A.V. (2017) Magnetoelectric nanocomposites with a polymeric matrix as a promising direction for the development of modern material science, 3(36), doi: 10.26909/csl.3.2017.2 The magnetoelectric (ME) effect is a appearing of the electrical polarization of a material in the presence of an applied magnetic field or the magnetization in the presence of an applied electric field and can be seen as the bridge between the electric and magnetic properties of matter. When a magnetic field is applied to the composite, strain in the magnetostrictive phase is induced and transmitted to the piezoelectric constituent causing a change in its electrical polarization. Similarly, the reverse effect can be observed: when an electric field is applied to the composite, strain is induced in the piezoelectric phase and transmitted to the magnetostrictive phase, leading to a change in the magnetization. Unlike the single-phase ME materials so far available at room temperature, the larger design flexibility of ME composites permits the design of multifunctional properties in which the coupling between the piezoelectric and magnetostrictive components produces an ME response several orders of magnitude higher than those in single-phase ME materials. Thus, composites can be used to generate an ME response from the combination of materials which themselves do not allow the ME effect. In turn, formation of magnetoelectric nanocomposites with a polymer matrix is an extremely relevant and interesting task of modern material science, which links the branches of fundamental and applied research. Moreover, using of nanosized functional particles allows significantly enhancing ME effect due to increasing of contact surface area between magnetostrictive and piezoelectric phases. Discovered in 1970, the ferroelectric properties of the poly(vinylidene fluoride) nowadays allow the developing of an organic high-sensitivity devices of a new generation of various forms with pre-determined mechanical properties, flexibility, versatility, ease and low cost of production and even biocompatibility.

show abstract

“…Additionally, magnetism is found in organic tetrakis(dimethylamino)ethylene‐fullerene charge transfer system due to the fullerene merohedral disorder induced spin ordering . Furthermore, organic multiferroic effects are realized in TTF‐BA (tetrathiafulvalene‐ p ‐bromanil) ( T c = 52 K), κ‐(BEDT‐TTF) 2 Cu[N(CN) 2 ]Cl ( T c = 26 K), and polythiophene (polythiophene nanowire) based charge transfer crystals, where the long‐range ferroelectric and magnetic orders are caused by the localized charge and spin ordering, respectively. It should be noted that organic charge transfer complex does not have 3d electrons.…”

Section: Introductionmentioning

confidence: 99%

Optically Controlled Magnetization and Magnetoelectric Effect in Organic Multiferroic Heterojunction

Wei

Niu

et al. 2017

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

The organic multiferroic effect receives increasing attention in organic electronics. Recently, the renaissance of organic multiferroics has yielded in a deep understanding of organic magnetism and magnetoelectric coupling. Here, through fabricating polythiophene nanowire/CH3NH3PbBr3 multiferroic heterojunction, the origin of organic magnetism, optically controlled magnetization, and magnetoelectric coupling with optical approach is studied. Specifically, the optical approach utilizes double beam 355 and 607 nm excitations to separately operate the CH3NH3PbBr3 and polythiophene nanowire layers. This double‐beam‐light approach allows to elucidate the effects of photogenerated charges on organic magnetism and magnetoelectric coupling effect. It is found that magnetization and magnetoelectric coupling of polythiophene nanowire/CH3NH3PbBr3 heterojunction can be effectively tuned through the photoexcitation of CH3NH3PbBr3, rather than photoexcitation of polythiophene nanowire phase, which has been further confirmed by electron spin resonance. Furthermore, the dominated factors are discussed to reveal room‐temperature magnetization in organics. This work provides a strategy for optically controlled organic magnetism and magnetoelectric effect in charge transfer heterojunction.

show abstract

An organic approach for nanostructured multiferroics

Cited by 39 publications

References 96 publications

Bio-field array: a dielectrophoretic electromagnetic toroidal excitation to restore and maintain the golden ratio in human erythrocytes

Bio-field array: a dielectrophoretic electromagnetic toroidal excitation to restore and maintain the golden ratio in human erythrocytes

Магнітоелектричні Нанокомпозити З Полімерною Матрицею Як Перспективний Напрямок Розвитку Сучасного Матеріалознавства

Optically Controlled Magnetization and Magnetoelectric Effect in Organic Multiferroic Heterojunction

Contact Info

Product

Resources

About