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1

Preparation of the crosslinked poly(vinyl alcohol)/blocked isocyanate prepolymers nanofibers with hydrolyzed products of Scutellariae Radix

R. Nirmala, Ji-Hui Lee, R. Navamathavan, Jae Heon Yang, Hak Yong Kim

Journal:

Materials Letters

Year:

2011

Language:

english

File:

PDF, 725 KB

english, 2011

2

Enhanced electrical properties of electrospun nylon66 nanofibers containing carbon nanotube fillers and Ag nanoparticles

Nirmala, R., Jeon, Kyung Soo, Navamathavan, R., Park, Mira, Kim, Hak Yong, Park, Soo-Jin

Journal:

Fibers and Polymers

Year:

2014

Language:

english

File:

PDF, 628 KB

english, 2014

3

The effects of UV radiation on SiC(O)N/SiOC(−H) thin films grown on Si substrates using plasma-enhanced atomic layer deposition

Navamathavan, R., Kim, Chang Young, Lee, Heon Ju, Yu, YoungHun, Choi, Chi Kyu

Journal:

Thin Solid Films

Year:

2013

Language:

english

File:

PDF, 500 KB

english, 2013

4

Bicrystalline GaN nanowires grown by the formation of Pt+Ga solid solution nano-droplets on Si(1 1 1) using MOCVD

Young-Min Lee, R. Navamathavan, Ki-Young Song, Ji-Hyun Park, Dong-Wook Kim, Suthan Kissinger, Jin-Soo Kim, Cheul-Ro Lee

Journal:

Journal of Crystal Growth

Year:

2010

Language:

english

File:

PDF, 982 KB

english, 2010

5

Effect of evaporated copper and aluminum on post-annealed SiOC(–H) films deposited using plasma-enhanced chemical vapor deposition

Chang Young Kim, Heang Seuk Lee, R. Navamathavan, Jong-Kwan Woo, Chi Kyu Choi

Journal:

Thin Solid Films

Year:

2010

Language:

english

File:

PDF, 1.39 MB

english, 2010

6

Study of Cu diffusion behavior in low dielectric constant SiOC(–H) films deposited by plasma-enhanced chemical vapor deposition

Chi Kyu Choi, Heang Seuk Lee, R. Navamathavan, Jong-Kwan Woo, Chang Young Kim

Journal:

Thin Solid Films

Year:

2010

Language:

english

File:

PDF, 957 KB

english, 2010

7

Ultraviolet irradiation effect on the properties of leakage current and dielectric breakdown of low-dielectric-constant SiOC(H) films using comb capacitor structure

Chang Young Kim, R. Navamathavan, Heang Seuk Lee, Jong-Kwan Woo, Myung Taek Hyun, Kwang-Man Lee, Won Young Jeung, Chi Kyu Choi

Journal:

Thin Solid Films

Year:

2011

Language:

english

File:

PDF, 900 KB

english, 2011

8

Photocatalytic activities of electrospun tin oxide doped titanium dioxide nanofibers

R. Nirmala, Hak Yong Kim, R. Navamathavan, Chaun Yi, Jeong Jin Won, Kyungsoo Jeon, Ayman Yousef, R. Afeesh, Mohamed El-Newehy

Journal:

Ceramics International

Year:

2012

Language:

english

File:

PDF, 1.11 MB

english, 2012

9

Selective area growth of GaN nanowires using metalorganic chemical vapor deposition on nano-patterned Si(111) formed by the etching of nano-sized Au droplets

Ki-Young Song, R. Navamathavan, Ji-Hyeon Park, Yeom-Bo Ra, Yong-Ho Ra, Jin-Soo Kim, Cheul-Ro Lee

Journal:

Thin Solid Films

Year:

2011

Language:

english

File:

PDF, 977 KB

english, 2011

10

Electrospun nickel doped titanium dioxide nanofibers as an effective photocatalyst for the hydrolytic dehydrogenation of ammonia borane

R. Nirmala, Hak Yong Kim, Chuan Yi, Nasser A.M. Barakat, R. Navamathavan, Mohamed El-Newehy

Journal:

International Journal of Hydrogen Energy

Year:

2012

Language:

english

File:

PDF, 1.12 MB

english, 2012

11

The effect of growth temperature on the coaxial InxGa1 − xN/GaN nanowires grown by metalorganic chemical vapor deposition

Ji-Hyeon Park, R. Navamathavan, Yong-Ho Ra, Bo-Ra Yeom, Jae-Kwan Sim, Haeng-Kwun Ahn, Cheul-Ro Lee

Journal:

Thin Solid Films

Year:

2012

Language:

english

File:

PDF, 946 KB

english, 2012

12

Coaxial In x Ga 1– x N/GaN Multiple Quantum Well Nanowire Arrays on Si(111) Substrate for High-Performance Light-Emitting Diodes

Ra, Yong-Ho, Navamathavan, R., Park, Ji-Hyeon, Lee, Cheul-Ro

Journal:

Year:

2013

Language:

english

File:

PDF, 2.23 MB

english, 2013

13

Preparation and characterization of copper oxide particles incorporated polyurethane composite nanofibers by electrospinning

Nirmala, R., Jeon, Kyung Soo, Lim, Baek Ho, Navamathavan, R., Kim, Hak Yong

Journal:

Ceramics International

Year:

2013

Language:

english

File:

PDF, 1.43 MB

english, 2013

14

Preparation of Photocrosslinkable Polystyrene Methylene Cinnamate Nanofibers via Electrospinning

Yi, Chuan, Nirmala, R., Navamathavan, R., Li, Xiang-Dan, Kim, Hak-Yong

Journal:

Journal of Nanoscience and Nanotechnology

Year:

2011

Language:

english

File:

PDF, 4.26 MB

english, 2011

15

Characterisation of bioresourced hydroxyapatite containing silver nanoparticles

Nirmala, R, Navamathavan, R, Afeesh, R, Park, H-M, Kang, H-S, Kim, H Y

Journal:

Materials Research Innovations

Year:

2012

Language:

english

File:

PDF, 415 KB

english, 2012

16

Mechanical properties of InAs/InP semiconductor alloys

R. Navamathavan, D. Arivuoli, G. Attolini, C. Pelosi, Chi Kyu Choi

Journal:

Applied Surface Science

Year:

2006

Language:

english

File:

PDF, 621 KB

english, 2006

17

Characterization of surface deformation around Vickers indentations in InGaAsP epilayers on InP substrate

R. Navamathavan, V. Ganesan, D. Arivuoli, G. Attolini, C. Pelosi, Chi Kyu Choi

Journal:

Applied Surface Science

Year:

2006

Language:

english

File:

PDF, 638 KB

english, 2006

18

Influence of thermal treatment of low dielectric constant SiOC(H) films using MTES/O2 deposited by PECVD

R. Navamathavan, Seung Hyun Kim, Yong Jun Jang, An Soo Jung, Chi Kyu Choi

Journal:

Applied Surface Science

Year:

2007

Language:

english

File:

PDF, 821 KB

english, 2007

19

Lecithin blended polyamide-6 high aspect ratio nanofiber scaffolds via electrospinning for human osteoblast cell culture

R. Nirmala, Hye-Min Park, R. Navamathavan, Hyung-Sub Kang, Mohamed H. El-Newehy, Hak Yong Kim

Journal:

Materials Science and Engineering: C

Year:

2011

Language:

english

File:

PDF, 1.33 MB

english, 2011

20

A nanoindentation analysis of the influence of lattice mismatch on some wide band gap semiconductor films

R. Navamathavan, Seong-Ju Park, Jun-Hee Hahn, Chi Kyu Choi

Journal:

Physica B: Condensed Matter

Year:

2008

Language:

english

File:

PDF, 178 KB

english, 2008

21

A nanoindentation study of the mechanical properties of ZnO thin films on (0 0 0 1) sapphire

R. Navamathavan, Kyoung-Kook Kim, Dae-Kue Hwang, Seong-Ju Park, Jun-Hee Hahn, Tae Geol Lee, Gwang-Seok Kim

Journal:

Applied Surface Science

Year:

2006

Language:

english

File:

PDF, 303 KB

english, 2006

22

Formation of high aspect ratio polyamide-6 nanofibers via electrically induced double layer during electrospinning

R. Nirmala, Ki Taek Nam, Soo-Jin Park, Yu-Shik Shin, R. Navamathavan, Hak Yong Kim

Journal:

Applied Surface Science

Year:

2010

Language:

english

File:

PDF, 1.35 MB

english, 2010

23

Multifunctional baicalein blended poly(vinyl alcohol) composite nanofibers via electrospinning

R. Nirmala, D. Kalpana, Jin Won Jeong, Hyun Ju Oh, Ji-Hui Lee, R. Navamathavan, Yang Soo Lee, Hak Yong Kim

Journal:

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Year:

2011

Language:

english

File:

PDF, 885 KB

english, 2011

24

Preparation of polyamide-6/chitosan composite nanofibers by a single solvent system via electrospinning for biomedical applications

R. Nirmala, R. Navamathavan, Hyung-Sub Kang, Mohamed H. El-Newehy, Hak Yong Kim

Journal:

Colloids and Surfaces B: Biointerfaces

Year:

2011

Language:

english

File:

PDF, 1.10 MB

english, 2011

25

Growth of InxGa1−xN quantum dots by nitridation of nano-alloyed droplet method using MOCVD

Heon Song, Seon-Ho Lee, Eun-Su Jang, Dong-Wook Kim, R. Navamathavan, Jin Soo Kim, Cheul-Ro Lee

Journal:

Journal of Crystal Growth

Year:

2009

Language:

english

File:

PDF, 531 KB

english, 2009

26

The influence of the working pressure on the synthesis of GaN nanowires by using MOCVD

Yong-Ho Ra, R. Navamathavan, Young-Min Lee, Dong-Wook Kim, Jin-Soo Kim, In-Hwan Lee, Cheul-Ro Lee

Journal:

Journal of Crystal Growth

Year:

2010

Language:

english

File:

PDF, 532 KB

english, 2010

27

Plasma characteristics of low-k SiOC(–H) films prepared by using plasma enhanced chemical vapor deposition from DMDMS/O2 precursors

An Soo Jung, R. Navamathavan, Kwang Man Lee, Chi Kyu Choi

Journal:

Surface and Coatings Technology

Year:

2008

Language:

english

File:

PDF, 680 KB

english, 2008

28

Electrical characterization of low-k films with nano-pore structure prepared with DMDMOS/O2 precursors

Chang Young Kim, R. Navamathavan, Heon Ju Lee, Chi Kyu Choi

Journal:

Surface and Coatings Technology

Year:

2008

Language:

english

File:

PDF, 801 KB

english, 2008

29

Structural, thermal, mechanical and bioactivity evaluation of silver-loaded bovine bone hydroxyapatite grafted poly(ε-caprolactone) nanofibers via electrospinning

R. Nirmala, Ki Taek Nam, Dae Kwang Park, Baek Woo-il, R. Navamathavan, Hak Yong Kim

Journal:

Surface and Coatings Technology

Year:

2010

Language:

english

File:

PDF, 1.25 MB

english, 2010

30

Plasma enhanced chemical vapor deposition of low dielectric constant SiOC(–H) films using MTES/O2 precursor

R. Navamathavan, Chi Kyu Choi

Journal:

Thin Solid Films

Year:

2007

Language:

english

File:

PDF, 587 KB

english, 2007

31

Characteristics of low-k SiOC(–H) films deposited at various substrate temperature by PECVD using DMDMS/O2 precursor

Chang Young Kim, Seung Hyun Kim, R. Navamathavan, Chi Kyu Choi, Won Young Jeung

Journal:

Thin Solid Films

Year:

2007

Language:

english

File:

PDF, 525 KB

english, 2007

32

Effect of NH3 plasma treatment on the device performance of ZnO based thin film transistors

R. Navamathavan, R. Nirmala, Cheul Ro Lee

Journal:

Year:

2011

Language:

english

File:

PDF, 289 KB

english, 2011

33

Nanoindentation studies of (111) GaAs/InP epilayers

R. Navamathavan, D. Arivuoli, G. Attolini, C. Pelosi

Journal:

Applied Surface Science

Year:

2001

Language:

english

File:

PDF, 135 KB

english, 2001

34

Preparation and characterization of electrospun ultrafine polyamide-6 nanofibers

Rajkumar Nirmala, Rangaswamy Navamathavan, Mohamed Hassan El-Newehy, Hak Yong Kim

Journal:

Polymer International

Year:

2011

Language:

english

File:

PDF, 273 KB

english, 2011

35

Synthesis and characterization of bovine femur bone hydroxyapatite containing silver nanoparticles for the biomedical applications

R. Nirmala, Faheem A. Sheikh, Muzafar A. Kanjwal, John Hwa Lee, Soo-Jin Park, R. Navamathavan, Hak Yong Kim

Journal:

Journal of Nanoparticle Research

Year:

2011

Language:

english

File:

PDF, 558 KB

english, 2011

36

Hydroxyapatite Mineralization on the Calcium Chloride Blended Polyurethane Nanofiber via Biomimetic Method

R Nirmala, Ki Taek Nam, R Navamathavan, Soo-Jin Park, Hak Yong Kim

Journal:

Nanoscale Research Letters

Year:

2011

Language:

english

File:

PDF, 1.44 MB

english, 2011

37

Effect of solvents on high aspect ratio polyamide-6 nanofibersviaelectrospinning

R. Nirmala, Hem Raj Panth, Chuan Yi, Ki Taek Nam, Soo-Jin Park, Hak Yong Kim, R. Navamathavan

Journal:

Macromolecular Research

Year:

2010

Language:

english

File:

PDF, 1.54 MB

english, 2010

38

Preparation and characterizations of anisotropic chitosan nanofibers via electrospinning

R. Nirmala, Baek Woo Il, R. Navamathavan, Mohamed H. El-Newehy, Hak Yong Kim

Journal:

Macromolecular Research

Year:

2011

Language:

english

File:

PDF, 824 KB

english, 2011

39

Different growth behaviors of GaN nanowires grown with Au catalyst and Au + Ga solid solution nano-droplets on Si(111) substrates by using MOCVD

R. Navamathavan, Yong-Ho Ra, Ki-Young Song, Dong-Wook Kim, Cheul-Ro Lee

Journal:

Current Applied Physics

Year:

2011

Language:

english

File:

PDF, 1011 KB

english, 2011

40

The growth behavior of GaN NWs on Si(1 1 1) by the dispersion of Au colloid catalyst using pulsed MOCVD

Ji-Hyoen Park, R. Navamathavan, Yeom-Bo Ra, Yong-Ho Ra, Jin-Soo Kim, Cheul-Ro Lee

Journal:

Journal of Crystal Growth

Year:

2011

Language:

english

File:

PDF, 1.27 MB

english, 2011

41

Mechanical properties of some binary, ternary and quaternary III–V compound semiconductor alloys

R. Navamathavan, D. Arivuoli, G. Attolini, C. Pelosi, Chi Kyu Choi

Journal:

Physica B: Condensed Matter

Year:

2007

Language:

english

File:

PDF, 428 KB

english, 2007

42

Fabrication and characterizations of ZnO thin film transistors prepared by using radio frequency magnetron sputtering

R. Navamathavan, Chi Kyu Choi, Eun-Jeong Yang, Jae-Hong Lim, Dae-Kue Hwang, Seong-Ju Park

Journal:

Solid-State Electronics

Year:

2008

Language:

english

File:

PDF, 267 KB

english, 2008

43

A study on electrospun nylon-6/TiO2composite nanofibers

R. Nirmala, Jeong Jin Won, Hak Yong Kim, R. Navamathavan, Yi Chuan, Mohamed El-Newehy, Salem S. Al-Deyab

Journal:

Journal of the Korean Physical Society

Year:

2012

Language:

english

File:

PDF, 249 KB

english, 2012

44

Electrical properties of ultrafine nylon-6 nanofibers prepared via electrospinning

R. Nirmala, Jin Won Jeong, Hyun Ju Oh, R. Navamathavan, Mohamed El-Newehy, Salem S. Al-Deyab, Hak Yong Kim

Journal:

Fibers and Polymers

Year:

2011

Language:

english

File:

PDF, 405 KB

english, 2011

45

UV irradiation effects on the bonding structure and electrical properties of ultra low-k SiOC(–H) thin films for 45 nm technology node

Chi Kyu Choi, Chang Young Kim, R. Navamathavan, Heang Seuk Lee, Jong-Kwan Woo, Myung Taek Hyun, Heon Ju Lee, Won Young Jeung

Journal:

Current Applied Physics

Year:

2011

Language:

english

File:

PDF, 766 KB

english, 2011

46

A study on structural and electrical properties of low dielectric constant SiOC(–H) thin films deposited via PECVD

R. Navamathavan, R. Nirmala, Chang Young Kim, Cheul-Ro Lee, Chi Kyu Choi

Journal:

Journal of Physics and Chemistry of Solids

Year:

2012

Language:

english

File:

PDF, 546 KB

english, 2012

47

Nanoindentation ‘pop-in’ phenomenon in epitaxial ZnO thin films on sapphire substrates

R. Navamathavan, Seong-Ju Park, Jun-Hee Hahn, Chi Kyu Choi

Journal:

Materials Characterization

Year:

2008

Language:

english

File:

PDF, 586 KB

english, 2008

48

‘Pop-in’ phenomenon during nanoindentation in epitaxial GaN thin films on c-plane sapphire substrates

R. Navamathavan, Yong-Tae Moon, Gwang-Seok Kim, Tae Geol Lee, Jun-Hee Hahn, Seong-Ju Park

Journal:

Materials Chemistry and Physics

Year:

2006

Language:

english

File:

PDF, 265 KB

english, 2006

49

Size effects of nano-pattern in Si(1 1 1) substrate on the selective growth behavior of GaN nanowires by MOCVD

Ji-Hyeon Park, R. Navamathavan, Cheul-Ro Lee

Journal:

Materials Research Bulletin

Year:

2012

Language:

english

File:

PDF, 1.78 MB

english, 2012

50

Microindentation studies of Hg0.7Cd0.3Te/CdTe compound semiconductor alloy

R. Navamathavan, D. Arivuoli, G. Attolini, C. Pelosi, Chi Kyu Choi

Journal:

Materials Letters

Year:

2006

Language:

english

File:

PDF, 350 KB

english, 2006