저널명 : Journal of Applied Physics, 124, 223101 (2018) 
저자 : Won-Hwa Park,*, Minjung Kim, Hyeonsik Cheong and Jaebum Choo 
기타사항 :  

Abstract

We report a method to characterize z-directional surface roughness of chemical vapor deposition-grown graphene monolayers with the aid of surface-enhanced Raman scattering spectral signatures of “out-of-plane” phonon modes observed at Au nanoparticle (NP)–graphene–Au thin film junctions. This method reveals that intensities of the out-of-plane mode (Radial Breathing Like Mode) are strongly correlated with the Full Width at Half Maximum (FWHM) of the de-convoluted 2D peak. On the basis of our findings, in-plane 2D peak shape can be used as a straightforward, quantitative indicator in estimating surface roughness of graphene without loading Au NPs by calculating the FWHM [2D−]/FWHM [2D+] value. Furthermore, we examine the different ripple (RP) shapes on graphene by employing atomic force microscopy-correlated Raman microscopy to identify “threading” and “surrounded” RP types for further investigation on the relationship between spectral features and structural aspects. Electrostatic force microscopy (EFM)-based investigation further substantiates that threading-type RPs in graphene show higher EFM amplitude, indicating that the threading domains tend to be more neutral with a few more sp3 type defects than the surroundings.


Download PDF = Click Attachment, please.

List of Articles
제목 저널명 저자 기타사항

2019 Direct Visualization of a Surface-Enhanced Raman Spectroscopy Nano-Gap via E...

저널명 Applied Surface Science, in press. 

저자 Won-Hwa Park*, Sung-Gyu Park, Mijeong Kang, Moon Seop Hyun, Namhyun Choi, Dong-Ho Kim* and Jaebum Choo* 

기타사항  

2019 Application of SERS-based Microfluidics for In Vitro Diagnostics

저널명 In “Medical and Biological Applications Using Microfluidic Devices”, Book Chapter 9 (2018) in press, Springer. 

저자 Jinhyeok Jeon, Namhyun Choi, Joung-il Moon, Hao Chen and Jaebum Choo* 

기타사항 Book Chapter 

2019 Green multi-functional monomer based ion imprinted polymers for selective rem...

저널명 Journal of Colloid and Interface Science, in press. 

저자 L. Wang, J. Lia, J. Wang, X. Guo, X. Wang, J. Choo* and L. Chen* 

기타사항  

2019 SERS-based droplet microfluidics for high throughput gradient analysis file

저널명 Lab on a Chip, 19, 674-681 (2019) 

저자 J. Jeon, N. Choi, H. Chen, J. -I. Moon, L. Chen* and J. Choo* 

기타사항  

2019 High-throughput Microfluidic Imaging Flow Cytometry file

저널명 Current Opinion in Biotechnology, 55, 36-43 (2019) 

저자 Stavros Stavrakis, Gregor Holzner, Jaebum Choo* and Andrew deMello* 

기타사항  

2019 Modification of Phage Display Technique for Improved Screening of High-Aff...

저널명 Journal of Biotechnology, 289, 88-92 (2019) 

저자 Soi Yun, Sangah Lee, Jaebum Choo* and E. K. Lee* 

기타사항  

2018 Experimental Investigation of Surface Morphology of a Chemical Vapor Deposit... file

저널명 Journal of Applied Physics, 124, 223101 (2018) 

저자 Won-Hwa Park,*, Minjung Kim, Hyeonsik Cheong and Jaebum Choo 

기타사항  

2018 Cut-and-Paste Transferrable Pressure Sensing Cartridge Films file

저널명 Chemistry of Materials, 30(18), 6410–6419 (2018). 

저자 H. Hwang, S. E. Choi, S. W. Han, I. You, E. S. Jeong, S. Kim, H. Yang, S. Lee, J. Choo, J. W. Kim* and U. Jeong* 

기타사항  

2018 A Sample-in-Digital-Answer-out System for Rapid Detection and Quantitation of... file

저널명 Analytical and Bioanalytical Chemistry, 410, 7019-7030 (2018). 

저자 H. Yang, Z. Chen, X. Cao, Z. Li, S. Stavrakis, J. Choo, A. J. deMello,* P. D. Howes and N. He* 

기타사항  

2018 Simultaneous immunoassays of dual prostate cancer markers using a SERS-based microdr... file

저널명 Biosensors & Bioelectronics,119, 126-133 (2018) 

저자 Rongke Gao*, Ziyi Cheng, Xiaokun Wang, Liandong Yu, Zhongyi Guo, Gang Zhao and Jaebum Choo* 

기타사항  


XE Login