Tailoring the internal structure of porous copper film via size-controlled copper nanosheets for electromagnetic interference shielding

Ho Kwang Choi; Sukang Bae; Seoung Ki Lee; Sang Hyun Lee; Kisu Lee; Seok Young Ko; Jae Wook Kang; Si Yeong Yang; Tae Wook Kim

doi:10.1016/j.mseb.2022.115611

Tailoring the internal structure of porous copper film via size-controlled copper nanosheets for electromagnetic interference shielding

Ho Kwang Choi
, Sukang Bae
, Seoung Ki Lee
, Sang Hyun Lee
, Kisu Lee
, Seok Young Ko
, Jae Wook Kang
, Si Yeong Yang
, Tae Wook Kim^*

^*Corresponding author for this work

Jeonbuk National University
Korea Institute of Science and Technology
Pusan National University
Chonnam National University
Korean Agency for Defense Development

Research output: Contribution to journal › Journal article › peer-review

8 Scopus citations

Abstract

We studied the effects that internal porous structures tailored using size-controlled copper nanosheets (Cu NSs) had on the electromagnetic interference (EMI) shielding performance of the resulting Cu NS films. Cu NSs were carefully synthesized as two-dimensional (2D) conductive fillers, and their size was controlled by adjusting the concentrations of the shape modifier (iodine), stabilizer (hexadecylamine) and reductant (glucose). Three kinds of Cu NSs had the size of 3.8 μm (Max. 10.0 μm), 8.9 μm (Max. 28.0 μm), and 12.2 μm (Max. 33.7 μm) and used as a conductive filler for shielding film by spray printing. The films had different surface coverages, film thicknesses, and EMI shielding effectiveness (SE) at a fixed loading weight of 0.6 mg/cm². The smallest to largest Cu NSs exhibited EMI shielding performances of 6.3 dB, 43.6 dB, and 69.7 dB, respectively, so performance was directly proportional to size.

Original language	English
Article number	115611
Journal	Materials Science and Engineering: B
Volume	278
DOIs	https://doi.org/10.1016/j.mseb.2022.115611
State	Published - 2022.04

Keywords

Copper nanosheet
Electromagnetic shielding
Metal nanosheet
Porous structure
Two-dimensional materials

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Mechanical
Physics & Astronomy

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10.1016/j.mseb.2022.115611

Cite this

@article{b2299164e20b49df8161e69d9348b7ac,

title = "Tailoring the internal structure of porous copper film via size-controlled copper nanosheets for electromagnetic interference shielding",

abstract = "We studied the effects that internal porous structures tailored using size-controlled copper nanosheets (Cu NSs) had on the electromagnetic interference (EMI) shielding performance of the resulting Cu NS films. Cu NSs were carefully synthesized as two-dimensional (2D) conductive fillers, and their size was controlled by adjusting the concentrations of the shape modifier (iodine), stabilizer (hexadecylamine) and reductant (glucose). Three kinds of Cu NSs had the size of 3.8 μm (Max. 10.0 μm), 8.9 μm (Max. 28.0 μm), and 12.2 μm (Max. 33.7 μm) and used as a conductive filler for shielding film by spray printing. The films had different surface coverages, film thicknesses, and EMI shielding effectiveness (SE) at a fixed loading weight of 0.6 mg/cm2. The smallest to largest Cu NSs exhibited EMI shielding performances of 6.3 dB, 43.6 dB, and 69.7 dB, respectively, so performance was directly proportional to size.",

keywords = "Copper nanosheet, Electromagnetic shielding, Metal nanosheet, Porous structure, Two-dimensional materials",

author = "\{Kwang Choi\}, Ho and Sukang Bae and Lee, \{Seoung Ki\} and \{Hyun Lee\}, Sang and Kisu Lee and Ko, \{Seok Young\} and Kang, \{Jae Wook\} and Yang, \{Si Yeong\} and Kim, \{Tae Wook\}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = apr,

doi = "10.1016/j.mseb.2022.115611",

language = "English",

volume = "278",

journal = "Materials Science and Engineering: B",

issn = "0921-5107",

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TY - JOUR

T1 - Tailoring the internal structure of porous copper film via size-controlled copper nanosheets for electromagnetic interference shielding

AU - Kwang Choi, Ho

AU - Bae, Sukang

AU - Lee, Seoung Ki

AU - Hyun Lee, Sang

AU - Lee, Kisu

AU - Ko, Seok Young

AU - Kang, Jae Wook

AU - Yang, Si Yeong

AU - Kim, Tae Wook

PY - 2022/4

Y1 - 2022/4

N2 - We studied the effects that internal porous structures tailored using size-controlled copper nanosheets (Cu NSs) had on the electromagnetic interference (EMI) shielding performance of the resulting Cu NS films. Cu NSs were carefully synthesized as two-dimensional (2D) conductive fillers, and their size was controlled by adjusting the concentrations of the shape modifier (iodine), stabilizer (hexadecylamine) and reductant (glucose). Three kinds of Cu NSs had the size of 3.8 μm (Max. 10.0 μm), 8.9 μm (Max. 28.0 μm), and 12.2 μm (Max. 33.7 μm) and used as a conductive filler for shielding film by spray printing. The films had different surface coverages, film thicknesses, and EMI shielding effectiveness (SE) at a fixed loading weight of 0.6 mg/cm2. The smallest to largest Cu NSs exhibited EMI shielding performances of 6.3 dB, 43.6 dB, and 69.7 dB, respectively, so performance was directly proportional to size.

AB - We studied the effects that internal porous structures tailored using size-controlled copper nanosheets (Cu NSs) had on the electromagnetic interference (EMI) shielding performance of the resulting Cu NS films. Cu NSs were carefully synthesized as two-dimensional (2D) conductive fillers, and their size was controlled by adjusting the concentrations of the shape modifier (iodine), stabilizer (hexadecylamine) and reductant (glucose). Three kinds of Cu NSs had the size of 3.8 μm (Max. 10.0 μm), 8.9 μm (Max. 28.0 μm), and 12.2 μm (Max. 33.7 μm) and used as a conductive filler for shielding film by spray printing. The films had different surface coverages, film thicknesses, and EMI shielding effectiveness (SE) at a fixed loading weight of 0.6 mg/cm2. The smallest to largest Cu NSs exhibited EMI shielding performances of 6.3 dB, 43.6 dB, and 69.7 dB, respectively, so performance was directly proportional to size.

KW - Copper nanosheet

KW - Electromagnetic shielding

KW - Metal nanosheet

KW - Porous structure

KW - Two-dimensional materials

UR - https://www.scopus.com/pages/publications/85123576360

U2 - 10.1016/j.mseb.2022.115611

DO - 10.1016/j.mseb.2022.115611

M3 - Journal article

AN - SCOPUS:85123576360

SN - 0921-5107

VL - 278

JO - Materials Science and Engineering: B

JF - Materials Science and Engineering: B

M1 - 115611

ER -

Tailoring the internal structure of porous copper film via size-controlled copper nanosheets for electromagnetic interference shielding

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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