Molecular spin switch triggered by voltage and magnetic field: towards DNA-based molecular devices

Salimi, Mostafa; Fathizadeh, Samira; Behnia, S.

doi:10.1088/1402-4896/ac5af1

Cited by 6 publications

(7 citation statements)

References 82 publications

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“…The observed non-monotonous dependence denotes some reorganization in the spin-system occurring at 80–100 mT. Note that the spin-switching processes can take place in DNA, which can even be used for logical elements’ construction 19 . The decrease in the enzyme activity, in this case, was more prominent as compared to the Mg loaded samples (Fig.…”

Section: Resultsmentioning

confidence: 97%

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Magnetic field and nuclear spin influence on the DNA synthesis rate

Стовбун

Zlenko

Bukhvostov

et al. 2023

Sci Rep

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The rate of a chemical reaction can be sensitive to the isotope composition of the reactants, which provides also for the sensitivity of such “spin-sensitive” reactions to the external magnetic field. Here we demonstrate the effect of the external magnetic field on the enzymatic DNA synthesis together with the effect of the spin-bearing magnesium ions ($$^{25}$$ 25 Mg). The rate of DNA synthesis monotonously decreased with the external magnetic field induction increasing in presence of zero-spin magnesium ions ($$^{24}$$ 24 Mg). On the contrary, in the presence of the spin-bearing magnesium ions, the dependence of the reaction rate on the magnetic field induction was non-monotonous and possess a distinct minimum at 80–100 mT. To describe the observed effect, we suggested a chemical scheme and biophysical mechanism considering a competition between Zeeman and Fermi interactions in the external magnetic field.

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Section: Resultsmentioning

confidence: 97%

“…To explain the magnetosensitivity of the DNA synthesis rate, some ion-radical pair should be supposed 19 , however, the problem of such a pair determination looks quite challenging and rises a lot of questions 1 . Nevertheless, the ion-radical pair providing for the magnetosensitivity of the enzymatic ATP synthesis was selected 8 .…”

Section: Resultsmentioning

confidence: 99%

Magnetic field and nuclear spin influence on the DNA synthesis rate

Стовбун

Zlenko

Bukhvostov

et al. 2023

Sci Rep

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“…H so is the spin-orbit coupling Hamiltonian defined as follows [30,31]: ) ] } . t so = 0.01 eV determines the spin-orbit coupling constant, θ = 0.66 rad is the helix angle and f = nΔj is the cylindrical coordinate with j = p 5 as the twist angle [32].…”

Section: Model and Methodsmentioning

confidence: 99%

Chaotic control of the dynamical behavior of COVID-19 through the electromagnetic fields

Fathizadeh¹,

Behnia²,

Nemati³

et al. 2022

Phys. Scr.

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Investigating the dynamical behavior of a system is an effective method to predict and control its future behavior. Studying the dynamic behavior of a virus can prevent the pathogenicity of a virus and save human lives during the disease epidemic. If the transmission of information from the virus genome to the environment is locked, the pathogenicity of the virus stops. Information transmission can be checked via the investigation of the spin information transport. In the current study, we have characterized the dynamical behavior of the virus by studying the spin transport through its RNA chain to estimate the information transfer path in the system. A voltage generator with adjustable frequency as a control system has been designed using the control theory of chaotic systems. Our aim is disturbing and reduces the transmitted information from viruses to the environment. The external stimuli can propel the system to the locked information transfer situation. Applying an external field noise with a specific frequency range ($200-500~GHz$) controlled through the external controller system can destroy the information transmitted by the virus to the environment. Disturbance intensity as a control parameter adjusts the external field frequency to push the system to the chaotic behavior which will be able to lock the information transfer and then prevent the spread of the epidemic.

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“…Fe(II) spin crossover (SCO) complexes are molecules in which the strength of the octahedral ligand field surrounding the Fe atom is in the realm where even slight external perturbations, like change of temperature [1][2][3][4][5] or magnetic field, [6][7][8] can trigger a spin-state transition in these molecules. [9][10][11][12][13][14][15] At low temperatures, when the octahedral ligand field splitting (D oct ) between the t 2g and e g orbitals is high, the SCO complexes occupy the diamagnetic (S = 0) low-spin state (LS).…”

Section: Introductionmentioning

confidence: 99%