Bio-Nanobattery Development and Characterization
read more
Citations
Self assembled nanoparticulate copt for data storage applications
References
Reduction of mammalian ferritin
Self assembled nanoparticulate CO:PT for data storage applications
Binding of ferritin molecules to a charged polypeptide layer of poly-1-benzyl-L-histidine
Development of nanoscale power system using biological self-assembly method
Related Papers (5)
Frequently Asked Questions (18)
Q2. What are the contributions mentioned in the paper "Bio-nanobattery development and characterization" ?
The bio-nanobattery under development at NASA ’ s Langley Research Center provides new capabilities for electrical power generation, storage, and distribution as compared to conventional power storage systems. Synthesis and characterization of the Co-ferritin and Fe-ferritin electrodes were performed, including reducing capability and the half-cell electrical potentials. The potential applications for the distributed power system include autonomously-operating intelligent chips, flexible thin-film electronic circuits, nanoelectromechanical systems ( NEMS ), ultra-high density data storage devices, nanoelectromagnetics, quantum electronic devices, biochips, nanorobots for medical applications and mechanical nano-fabrication, etc. The authors have found that the half-cell potential of Fe-cored ferritins, -400 mV, and the Co-cored ferritins, 1000 mV, indicates that a cell having a 1. 4V potential is possible.
Q3. How many ferrites are needed for the biological mechanisms of humans, animals, and even?
naturally occurring iron storage proteins, are necessary for the biological mechanisms of humans, animals, and even bacteria, and may contain up to 4,500 Fe+3 atoms.
Q4. What is the reversible reaction of ferritins?
In the absence of chelators at pH = 7.0, the Fe(OH)3 iron core of ferritins undergoes reversible reduction to produce a stable Fe(OH)2 core, while all 4500 iron atoms remain within the ferritin interior.
Q5. What is the mechanism of electron conduction through the protein shell?
The mechanism of electron conduction through the protein shell is a key factor to determine power density, maximum discharge rate, and duty cycle life of bio-nanobattery cell units.
Q6. What is the mechanism of electron transport in the ferritin cell unit?
The electron conduction is influenced by the presence of a core material, suggesting that electron tunneling may be the mechanism of electron transport.
Q7. What is the process of making ferritins without a core?
Ferritins were purified through size exclusion chromatography and de-mineralized through a reduction process to make apo-ferritin, ferritins without a core material.
Q8. What is the effect of ferritins on the electron transport?
Reconstituting ferritins with other metallic core materials having a higher redox potential may improve the power density of the bio-nanobattery.
Q9. What are the core materials used for the bio-nanobattery?
Ferritins with cobalt and manganese cores have already been made for the bio-nanobattery, as well as ferritins with other core materials for extended applications.
Q10. What is the common use of bio-nanobatteries?
The bio-nanobattery can be made as a flexible thin film and incorporated into a fabric or made to conform to various applications, even incorporating power harvesting devices for recharging the bionanobattery.
Q11. What is the effect of cationized Ferritin on the substrate?
Ferritin arrays were fabricated using cationized Ferritin, enabling a strong electrostatic attraction to the negatively charged Si substrate.
Q12. What is the process of dipping ferritins?
The dipping method also produces a thin ferritin layer by physical adsorption on substrates, the thickness controlled by process time and solution concentration.
Q13. How did the arrays of ferritins be fabricated?
Two-dimensional arrays of ferritins were successfully fabricated on silicon substrates using the spin self-assembly deposition method.
Q14. How is the reversible reduction of ferritins possible?
The authors have found that the half-cell potential of Fe-cored ferritins, -400 mV, and the Co-cored ferritins, 1000 mV, indicates that a cell having a 1.4V potential is possible.
Q15. What is the way to make a ferritin array?
SPM images show the 2-D ferritin arrays to be smooth and uniform, suggesting that the SSA deposition method will produce fast, reliable arrays for the bio-nanobattery.
Q16. What is the absorbance of the remaining Fe2+?
The remaining Fe2+ is indicated by the decrease in absorbance at 511 nm as the redox reaction takes place, corresponding to the remaining Fe2+ in the solution.
Q17. What is the redox reaction between ferritin and other core materials?
Redox reactions between ferritin with different core materials involve the transfer of an electron from a donor to an acceptor ferritin (Figure 3).
Q18. What is the common method for conductivity measurement?
Another possible method for conductivity measurement involves measuring a DC current through a nonconductive substrate, both with and without a 2-D ferritin array.