RESEARCH INTERESTS

- DNA sensor and immunosensors

- Lab-on-a-chip for molecular diagnostics

- Electrochemical characterization and application of nanomaterials

- Electrochemical micropatterning

PUBLICATIONS

42. Md. Abdul Aziz, and Haesik Yang,* "Surfactant and polymer-free electrochemical micropatterning of carboxylated multi-walled carbon nanotubes on indium tin oxide electrodes,"Chem. Commun., in press.

41. Thangavelu Selvaraju, Jagotamoy Das, Sang Woo Han, and Haesik Yang,* "Ultrasensitive electrochemical immunosensing using magnetic beads and gold nanocatalysts, "Biosens. Bioelectron., in press.

40. Md. Abdul Aziz and Haesik Yang,* “Electrochemical immunosensor using the modification of an amine-functionalized indium tin oxide electrode with carboxylated single-walled carbon nanotubes," B. Kor. Chem. Soc., 28 (7), 1171-1174 (2007).

39. Md. Abdul Aziz, Thangavelu Selvaraju, and Haesik Yang,* “Selective determination of catechol in the presence of hydroquinone at bare indium tin oxide electrodes via peak-potential separation and redox cycling by hydrazine," Electroanal., 19 (14), 1543-1546 (2007).

38. Md. Abdul Aziz, Sangjin Park, Sangyong Jon, and Haesik Yang,* “Amperometric immunosensing using an indium tin oxide electrode modified with multi-walled carbon nanotube and poly(ethylene glycol)-silane copolymer," Chem. Commun., (25), 2610-2612 (2007).

37. Jagotamoy Das, Kyungmin Jo, Jae Wook Lee, and Haesik Yang,* “Electrochemical immunosensor using p-aminophenol redox cycling by hydrazine combined with a low background current," Anal. Chem., 79 (7), 2790-2796 (2007).

36. Byung-Kwon Kim, Sung-Jin Kim, Sang-Youn Yang, and Haesik Yang,* “Passive washing using inlet-pressure difference and a washing valve," J. Micromech. Microeng., 17 (4), N22-N29 (2007).

35. Yong Shin Kim, Seung-Chul Ha, Haesik Yang, and Youn Tae Kim, “Gas sensor measurement system capable of sampling volatile organic compounds (VOCs) in wide concentration range,” Sens. Actuators B, 122 (1), 211-218 (2007).

34. Jagotamoy Das, Md. Abdul Aziz, and Haesik Yang,* “A nanocatalyst-based assay for proteins: DNA-free ultrasensitive electrochemical detection using catalytic reduction of p-nitrophenol by gold-nanoparticle lables," J. Am. Chem. Soc., 128 (50), 16022-16023 (2006).

33. Sung-Jin Kim, Haesik Yang, Yong Taik Lim, Kyuwon Kim, and Hyeon-Bong Pyo, “Study of SU-8 to make a Ni master-mold: adhesion, sidewall profile, and removal," Electrophoresis, 27 (16), 3284-3296 (2006).

32. Yong Taik Lim, Sung-Jin Kim, Haesik Yang, and Kyuwon Kim, “Controlling the hydrophilicity of microchannels with bonding adhesives containing surfactants," J. Micromech. Microeng. 16 (7), N9-N16 (2006).

31. Seong Jung Kwon, Eunkyung Kim, Haesik Yang,* Juhyoun Kwak,* “An electrochemical immunosensor using ferrocenyl-tethered dendrimer," Analyst, 131 (3), 402-406 (2006).

30. Sung-Jin Kim, Yong Taik Lim, Haesik Yang, Yong Beom Shin, Kyuwon Kim, Dae-Sik Lee, Se Ho Park, and Youn Tae Kim, “Passive microfluidic control of two merging streams by capillarity and relative flow resistance," Anal. Chem., 77 (19), 6494-6499 (2005).

29. Dae-Sik Lee,* Haesik Yang,* Kwang-Hyo Chung, Hyeon-Bong Pyo, “Wafer-scale fabrication of polymer-based microdevices via injection molding and photolithographic micropatterning protocols," Anal. Chem., 77 (16), 5414-5420 (2005).

28. Yong Shin Kim, Seung-Chul Ha, Yoonseok Yang, Young Jun Kim, Seong Mok Cho, Haesik Yang, and Youn Tae Kim, “Portable electronic nose system based on the carbon black-polymer composite sensor array," Sens. Actuators B, 108 (1-2), 285-291 (2005).

27. Yong Shin Kim, Seung-Chul Ha, Kyuwon Kim, Haesik Yang, Sung-Yool Choi, Youn Tae Kim, Joon T. Park, Chang Hoon Lee, Jiyong Choi, Jungsun Paek, and Kwangyeol Lee, “Room-temperature semiconductor gas sensor based on nonstoichiometric tungsten oxide nanorod film," App. Phys. Lett., 86 (21), 213105 (2005).

26. Young Jun Kim, Yoonseok Yang, Seung-Chul Ha, Seong M. Cho, Yong Shin Kim, Hey Yoon Kim, Haesik Yang, and Youn Tae Kim, “Mixed-ligand nanoparticles of chlorobenzenemethanethiol and n-octanethiol as chemical sensors," Sens. Actuators B, 106 (1), 189-198 (2005).

25. Seung-Chul Ha, Yong Shin Kim, Yoonseok Yang, Young Jun Kim, Seong-Mok Cho, Haesik Yang, and Youn Tae Kim, “Integrated and microheater embedded gas sensor array based on the polymer composites dispensed in micromachined wells," Sens. Actuators B, 105 (2), 549-555 (2005).

24. Kyuwon Kim, Haesik Yang,* Sang Yong Jon, Eunkyung Kim, and Juhyoun Kwak,* “Protein patterning based on electrochemical activation of bioinacitive surfaces with hydroquinone-caged biotin," J. Am. Chem. Soc., 126 (47), 15368-15369 (2004).

23. Hyun C. Yoon, Haesik Yang, and Sang Yo Byun, “Ferritin immunosensing on microfabricated electrodes based on the integration of immunoprecipitation and electrochemical signaling reactions," Anal. Sci., 20 (9), 1249-1254 (2004).

22. Dae-Sik Lee, Se Ho Park, Haesik Yang, Kwang-Hyo Chung, Tae Hwan Yoon, Sung-Jin Kim, Kyuwon Kim, and Youn Tae Kim, “Bulk-micromachined submicroliter-volume PCR chip with very rapid thermal response and low power consumption," Lab Chip, 4 (4), 401-407 (2004).

21. Kyuwon Kim,* Haesik Yang,* Se Ho Park, Dae-Sik Lee, Sung-Jin Kim, Yong Taik Lim, and Youn Tae Kim, “Washing-free electrochemical DNA detection using double-stranded probes and competitive hybridization reaction," Chem. Commun., (13), 1466-1467 (2004).

20. Kyuwon Kim, Minchul Jang, Haesik Yang,* Eunkyung Kim, Youn Tae Kim, and Juhyoun Kwak,* “Electrochemically induced and controlled one-step covalent coupling reaction on self-assembled monolayers," Langmuir, 20 (10), 3821-3823 (2004).

19. Haesik Yang, Chang Auck Choi, Kwang Hyo Chung, Chi-Hoon Jun, and Youn Tae Kim, “An independent, temperature-controllable microelectrode array," Anal. Chem., 76 (5), 1537-1543 (2004).

18. Haesik Yang, Sun Kil Kang, Chang Auck Choi, Hyokyum Kim, Dong-Ho Shin, Yong Shin Kim, and Youn Tae Kim, “An iridium oxide reference electrode for use in microfabricated biosensors and biochips," Lab Chip, 4 (1), 42-46 (2004).

17. Eunkyung Kim, Kyuwon Kim, Haesik Yang,* Youn Tae Kim, and Juhyoun Kwak,* “Enzyme-amplified electrochemical detection of DNA using electrocatalysis of ferrocenyl-tethered dendrimer," Anal. Chem., 75 (21), 5665-5672 (2003).

16. Jong Soo Ko, Hyun C. Yoon, Haesik Yang, Hyeon-Bong Pyo, Kwang Hyo Chung, Sung Jin Kim, and Youn Tae Kim, “A polymer-based microfluidic device for immunosensing biochips," Lab Chip, 3 (2), 106-113 (2003).

15. Hyun C. Yoon, Jong Soo Ko, Haesik Yang, and Youn Tae Kim, “Stepwise surface regeneration of electrochemical immunosensors working on biocatalyzed precipitation," Analyst, 127 (12), 1576-1579 (2002).

14. Hyun C. Yoon, Haesik Yang, and Youn Tae Kim, “Biocatalytic precipitation induced by an affinity reaction on dendrimer-activated surfaces for the electrochemical signaling from immunosensors," Analyst, 127 (8), 1082-1087 (2002).

13. Kyuwon Kim, Haesik Yang,* Eunkyoung Kim, Youngbin Han, Youn Tae Kim, Sung Ho Kang, and Juhyoun Kwak,* “Electrochemical deprotection for site-selective immobilization of biomolecules," Langmuir, 18 (5), 1460-1462 (2002).

12. Haesik Yang, Taek Dong Chung, Youn Tae Kim, Chang Auck Choi, Chi Hoon Jun, and Hee Chan Kim, “Glucose sensor using a microfabricated electrode and electropolymerized bilayer films," Biosen. Bioelectron., 17 (3), 251-259 (2002).

11. Hochun Lee, Haesik Yang, and Juhyoun Kwak, "Effects of dopant anion and N-substituent on the electrochemical behavior of polypyrrole films in propylene carbonate solutions," Electrochem. Commun., 4 (2), 128-133 (2002).

10. Ilwhan Oh, Hochun Lee, Haesik Yang, and Juhyoun Kwak, "Ion and water transports in Prussian blue films investigated with electrochemical quartz crystal microbalance," Electrochem. Commun., 3 (6), 274-280 (2001).

9. Haesik Yang, Kyungjung Kwon, Thomas M. Devine, and James W. Evans, “Aluminum corrosion in lithium batteries: an investigation using the electrochemical quartz crystal microbalance," J. Electrochem. Soc., 147 (12), 4399-4407 (2000).

8. Haesik Yang, Hochun Lee, Youn Tae Kim, and Juhyoun Kwak, "Slow and fast charge transport processes in PPy/NO3 films," J. Electrochem. Soc., 147 (11), 4239-4246 (2000).

7. Hochun Lee, Haesik Yang, Youn Tae Kim, and Juhyoun Kwak, "Anion transport in Prussian blue films in acetonitrile and propylene carbonate solutions," J. Electrochem. Soc., 147 (10), 3801-3807 (2000).

6. Won Ick Jang, Chang Auck Choi, Jong Hyun Lee, Chi Hoon Jun, Haesik Yang, and Youn Tae Kim, “Characterization of residues on anhydrous HF gas-phase etching of sacrificial oxides for surface micromachining," Jpn. J. Appl. Phys. Part 1, 39 (1), 337-342 (2000).

5. Hochun Lee, Haesik Yang, and Juhyoun Kwak, "Dependence of the electrochemical behavior of poly(N-phenylpyrrole) films on the type of anion and solvent used in the electropolymerization," J. Phys. Chem. B, 103 (29), 6030-6035 (1999).

4. Hochun Lee, Haesik Yang, and Juhyoun Kwak, "Mass transport behavior of polypyrrole and poly(N-methylpyrrole) films in acetonitrile solutions," J. Electroanal. Chem., 468 (1), 104-109 (1999).

3. Haesik Yang and Juhyoun Kwak, "Mass transport investigated with the electrochemical and electrogravimetric impedance techniques. 3. Complex charge transport in PPy/PSS films," J. Phys. Chem. B, 102 (11), 1982-1988 (1998).

2. Haesik Yang and Juhyoun Kwak, "Mass transport investigated with the electrochemical and electrogravimetric impedance techniques. 2. Anion and water transport in PMPy and PPy films," J. Phys. Chem. B, 101 (23), 4656-4661 (1997).

1. Haesik Yang and Juhyoun Kwak, "Mass transport investigated with the electrochemical and electrogravimetric impedance techniques. 1. Water transport in PPy/CuPTS films," J. Phys. Chem. B, 101 (5), 774-781 (1997).