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Your search keyword '"Bykova, Julia S"' showing total 9 results
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9 results on '"Bykova, Julia S"'

1. Woven-yarn thermoelectric textiles

Author

Lee, Jae Ah, Aliev, Ali E, Bykova, Julia S, de Andrade, Monica Jung, Kim, Daeyoung, Sim, Hyeon Jun, Lepró, Xavier, Zakhidov, Anvar, Lee, Jeongbong, Spinks, Geoffrey M, Roth, Siegmar, Kim, Seon Jeong, Baughman, Ray H, Lee, Jae Ah, Aliev, Ali E, Bykova, Julia S, de Andrade, Monica Jung, Kim, Daeyoung, Sim, Hyeon Jun, Lepró, Xavier, Zakhidov, Anvar, Lee, Jeongbong, Spinks, Geoffrey M, Roth, Siegmar, Kim, Seon Jeong, and Baughman, Ray H

Abstract

The fabrication and characterization of highly flexible textiles are reported. These textiles can harvest thermal energy from temperature gradients in the desirable through-thickness direction. The tiger yarns containing n- and p-type segments are woven to provide textiles containing n-p junctions. A high power output of up to 8.6 W m−2 is obtained for a temperature difference of 200 °C.

Published
2016

2. Woven‐Yarn Thermoelectric Textiles

Author

Lee, Jae Ah, primary, Aliev, Ali E., additional, Bykova, Julia S., additional, de Andrade, Mônica Jung, additional, Kim, Daeyoung, additional, Sim, Hyeon Jun, additional, Lepró, Xavier, additional, Zakhidov, Anvar A., additional, Lee, Jeong‐Bong, additional, Spinks, Geoffrey M., additional, Roth, Siegmar, additional, Kim, Seon Jeong, additional, and Baughman, Ray H., additional

Published
2016
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3. Efficient, absorption-powered artificial muscles based on carbon nanotube hybrid yarns

Author

Lima, Marcio D, Hussain, Mohammad W, Spinks, Geoffrey M, Naficy, Sina, Hagenasr, Daniela, Bykova, Julia S, Tolly, Derrick, Baughman, Ray H, Lima, Marcio D, Hussain, Mohammad W, Spinks, Geoffrey M, Naficy, Sina, Hagenasr, Daniela, Bykova, Julia S, Tolly, Derrick, and Baughman, Ray H

Abstract

A new type of absorption-powered artificial muscle provides high performance without needing a temperature change. These muscles, comprising coiled carbon nanotube fibers infiltrated with silicone rubber, can contract up to 50% to generate up to 1.2 kJ kg−1. The drive mechanism for actuation is the rubber swelling during exposure to a nonpolar solvent. Theoretical energy efficiency conversion can be as high as 16%.

Published
2015

8. Woven-Yarn Thermoelectric Textiles.

Author

Jae Ah Lee, Aliev, Ali E., Bykova, Julia S., de Andrade, Mônica Jung, Daeyoung Kim, Hyeon Jun Sim, Lepró, Xavier, Zakhidov, Anvar A., Jeong-Bong Lee, Spinks, Geoffrey M., Roth, Siegmar, Seon Jeong Kim, and Baughman, Ray H.

Published
2016
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9. Thermal property tuning in aligned carbon nanotube films and random entangled carbon nanotube films by ion irradiation.

Author

Jing Wang, Di Chen, Bykova, Julia S., Zakhidov, Anvar A., Xuemei Wang, and Lin Shao

Subjects
THERMAL properties, CARBON nanotubes, NANOFILMS, THERMAL conductivity, IRRADIATION
Abstract

Ion irradiation effects on thermal property changes are compared between aligned carbon nanotube (A-CNT) films and randomly entangled carbon nanotube (R-CNT) films. After H, C, and Fe ion irradiation, a focusing ion beam with sub-mm diameter is used as a heating source, and an infrared signal is recorded to extract thermal conductivity. Ion irradiation decreases thermal conductivity of A-CNT films, but increases that of R-CNT films. We explain the opposite trends by the fact that neighboring CNT bundles are loosely bonded in A-CNT films, which makes it difficult to create inter-tube linkage/bonding upon ion irradiation. In a comparison, in R-CNT films, which have dense tube networking, carbon displacements are easily trapped between touching tubes and act as intertube linkage to promote off-axial phonon transport. The enhancement overcomes the phonon transport loss due to phonon-defect scattering along the axial direction. A model is established to explain the dependence of thermal conductivity changes on ion irradiation parameters including ion species, energies, and current. [ABSTRACT FROM AUTHOR]

Published
2015
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