Bo Mi Kim

Dr. Bo Mi Kim


Research Focus & Metrics

Academic Career Length

17Years (2010-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
8 April 2020 in Nanomaterials
Verified
Journal Article
Open access
PDF file
KRKanthasamy Raagulan
Kanthasamy Raagulan
BKBo Mi Kim
Bo Mi Kim
KRKanthasamy Raagulan
Kanthasamy Raagulan
The two Dimensional (2D) materials such as MXene and graphene, are most promising materials, as they have attractive properties and attract numerous application areas like sensors, supper capacitors, displays, wearable devices, batteries, and Electromagnetic Interference (EMI) shielding. The proliferation of wireless communication and smart electronic systems urge the world to develop light weight, flexible, cost effective EMI shielding materials. The MXene and graphene mixed with polymers, nanoparticles, carbon nanomaterial, nanowires, and ions are used to create materials with different structural features under different fabrication techniques. The aerogel based hybrid composites of MXene and graphene are critically reviewed and correlate with structure, role of size, thickness, effect of processing technique, and interfacial interaction in shielding efficiency. Further, freeze drying, pyrolysis and hydrothermal treatment is a powerful tool to create excellent EMI shielding aerogels. We present here a review of MXene and graphene with various polymers and nanomaterials and their EMI shielding performances. This will help to develop a more suitable composite for modern electronic systems.

22 September 2018 in Materials
Verified
Journal Article
Open access
PDF file
KRKanthasamy Raagulan
Kanthasamy Raagulan
RBRamanaskanda Braveenth
Ramanaskanda Braveenth
HJHee Jung Jang
Hee Jung Jang
YLYun Seon Lee
Yun Seon Lee
CYCheol-Min Yang
Cheol-Min Yang
KRKanthasamy Raagulan
Kanthasamy Raagulan
MXene and graphene based thin, flexible and low-density composite were prepared by cost effective spray coating and solvent casting method. The fabricated composite was characterized using Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray (EDX). The prepared composites showed hydrophobic nature with higher contact angle of 126°, −43 mN·m−1 wetting energy, −116 mN·m−1 spreading Coefficient and 30 mN·m−1 lowest work of adhesion. The composites displayed excellent conductivity of 13.68 S·cm−1 with 3.1 Ω·sq−1 lowest sheet resistance. All the composites showed an outstanding thermal stability and constrain highest weight lost until 400 °C. The MXene-graphene foam exhibited excellent EMI shielding of 53.8 dB (99.999%) with reflection of 13.10 dB and absorption of 43.38 dB in 8–12.4 GHz. The single coated carbon fabric displayed outstanding absolute shielding effectiveness of 35,369.82 dB·cm2·g−1. The above results lead perspective applications such as aeronautics, radars, air travels, mobile phones, handy electronics and military applications.

8 January 2020 in RSC Advances
Verified
Journal Article
Open access
PDF file
KRKanthasamy Raagulan
Kanthasamy Raagulan
RBRamanaskanda Braveenth
Ramanaskanda Braveenth
BKBo Mi Kim
Bo Mi Kim
KLKwang Jin Lim
Kwang Jin Lim
SLSang Bok Lee
Sang Bok Lee
KRKanthasamy Raagulan
Kanthasamy Raagulan
MXene and conductive polymers are attractive candidates for electromagnetic interference shielding (EMI) applications. The MXene–PAT-conductive polymer (CP) composites were fabricated by a cost-effective spray coating technique and characterized using X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy. A new approach has been developed for the synthesis of exfoliated MXene. The MXene–PAT–poly(p-aminophenol)–polyaniline co-polymer composite exhibited good electric conductivity (EC) of 7.813 S cm−1. The composites revealed an excellent thermal properties, which were 0.687 W (m K)−1 thermal conductivity, 2.247 J (g K)−1 heat capacity, 0.282 mm2 s−1 thermal diffusivity and 1.330 W s1/2 m−2 K−1 thermal effusivity. The composites showed 99.99% shielding efficiency and the MXene–PAT–PANI–PpAP composite (MXPATPA) had EMI shielding effectiveness of 45.18 dB at 8.2 GHz. The reduced form of MXene (r-Ti3C2Tx) increased the shielding effectiveness (SE) by 7.26% and the absorption (SEA) was greatly enhanced by the ant farm like structure. The composites possess excellent thermal and EMI SE characteristics, thus can be applied in areas, such as mobile phones, military utensils, heat-emitting electronic devices, automobiles and radars.

23 November 2022 in Materials Advances
Verified
Journal Article
Open access
PDF file
RBRamanaskanda Braveenth
Ramanaskanda Braveenth
KRKanthasamy Raagulan
Kanthasamy Raagulan
YKYu-Jin Kim
Yu-Jin Kim
BKBo Mi Kim
Bo Mi Kim
Green conventional TADF emitters show good device performance, but MR-TADF emitters reveal high colour purity while retaining better device properties. Substituting various donors, acceptors or both on boron central core bring an interesting strategy toward green emissions.

2 April 2019 in Nanomaterials
Verified
Journal Article
Open access
PDF file
KRKanthasamy Raagulan
Kanthasamy Raagulan
RBRamanaskanda Braveenth
Ramanaskanda Braveenth
LLLee Ro Lee
Lee Ro Lee
JLJoonsik Lee
Joonsik Lee
BKBo Mi Kim
Bo Mi Kim
KRKanthasamy Raagulan
Kanthasamy Raagulan
MXenes, carbon nanotubes, and nanoparticles are attractive candidates for electromagnetic interference (EMI) shielding. The composites were prepared through a filtration technique and spray coating process. The functionalization of non-woven carbon fabric is an attractive strategy. The prepared composite was characterized using X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), and Raman spectroscopy. The MXene-oxidized carbon nanotube-sodium dodecyl sulfate composite (MXCS) exhibited 50.5 dB (99.999%), and the whole nanoparticle-based composite blocked 99.99% of the electromagnetic radiation. The functionalization increased the shielding by 15.4%. The composite possessed good thermal stability, and the maximum electric conductivity achieved was 12.5 Scm−1. Thus, the composite shows excellent potential applications towards the areas such as aeronautics, mobile phones, radars, and military.

17 May 2022 in RSC Advances
Verified
Journal Article
Open access
PDF file
KRKanthasamy Raagulan
Kanthasamy Raagulan
JGJinsoo Ghim
Jinsoo Ghim
RBRamanaskanda Braveenth
Ramanaskanda Braveenth
KRKanthasamy Raagulan
Kanthasamy Raagulan
BKBo Mi Kim
Bo Mi Kim
The proliferation of the latest electronic gadgets and wireless communication devices can trigger electromagnetic interference (EMI), which has a detrimental impact on electronic devices and humans. Efficient EMI shielding materials are required for EMI-SE and they should be durable in external environments, lightweight, and cost-effective. GNO-coated glass-fiber–GNO–maleic anhydride-grafted polypropylene (MAPP) composite and carbon fiber-reinforced nylon 1D–2D nanocomposite foam were successfully prepared via a cost-effective thermal process. The composites were characterized using scanning electron microscopy (SEM), Raman spectroscopy, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The PP and nylon-based composites with ∼13% filler showed maximum electrical conductivity (EC) of 878 mS cm−1 and 1381 mS cm−1, respectively. The GNO-coated glass-fiber–GNO–MAPP foam displays a maximum EMI-SE of 120.6 dB, while the nylon graphene–carbon nanotube–metal nanoplatelet foam exhibits a maximum EMI-SE of 139.1 dB in the X-band region. The GFCFFeGMAPP composite possesses a minimum thickness of 2.56 mm and blocks most incoming radiation. These are some of the highest EMI-SE values reported so far for glass fiber and nylon-based composites, and the nylon-based composite showed excellent properties compared to the glass fiber-based composite. Thus, we believe that the developed composites can be used in a wide range of real applications, such as in military vehicles, aviation, automobiles, and the packaging of electronic circuits.