Hydrophilic modification of multi-walled carbon nanotubes based neural microelectrode array

Chen, C.H.; Su, Hsin-Hao; Chuang, Shih‐Ching; Yen, Shiang-Jie; Chen, Y.C.; Lee, Y.T.; Yew, Tri‐Rung; Chen, H.; Yeh, Shih-Rung; Chang, Y. C.; Yao, Da‐Jeng

doi:10.1109/sensor.2009.5285978

Cited by 3 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dashed box encloses data points for this work. Materials include gold, − platinum, ,,,,− platinum-black, ,,,, iridium , (including activated iridium oxide films (AIROFs) , ), and carbon nanotubes (CNTs). ,− …”

mentioning

confidence: 99%

“…Materials include gold, [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] platinum, 3,10,14,19,[23][24][25][26] platinum-black, 3,10,14,23,26 iridium 27,28 (including activated iridium oxide films (AIROFs) 29,30 ), and carbon nanotubes (CNTs). 23,[31][32][33][34][35][36][37][38][39][40] Scanning electron microscopy (SEM) micrographs of the CNTs deposited by thermal CVD (Figure 3a) revealed a randomly oriented CNT film, approximately 2.5 µm thick. The CNTs were kinked and had diameters ranging from 25 to 60 nm.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Electrochemical Properties and Myocyte Interaction of Carbon Nanotube Microelectrodes

et al. 2010

View full text Add to dashboard Cite

Arrays of carbon nanotube (CNT) microelectrodes (nominal geometric surface areas 20-200 μm(2)) were fabricated by photolithography with chemical vapor deposition of randomly oriented CNTs. Raman spectroscopy showed strong peak intensities in both G and D bands (G/D = 0.86), indicative of significant disorder in the graphitic layers of the randomly oriented CNTs. The impedance spectra of gold and CNT microelectrodes were compared using equivalent circuit models. Compared to planar gold surfaces, pristine nanotubes lowered the overall electrode impedance at 1 kHz by 75%, while nanotubes treated in O(2) plasma reduced the impedance by 95%. Cyclic voltammetry in potassium ferricyanide showed potential peak separations of 133 and 198 mV for gold and carbon nanotube electrodes, respectively. The interaction of cultured cardiac myocytes with randomly oriented and vertically aligned CNTs was investigated by the sectioning of myocytes using focused-ion-beam milling. Vertically aligned nanotubes deposited by plasma-enhanced chemical vapor deposition (PECVD) were observed to penetrate the membrane of neonatal-rat ventricular myocytes, while randomly oriented CNTs remained external to the cells. These results demonstrated that CNT electrodes can be leveraged to reduce impedance and enhance biological interfaces for microelectrodes of subcellular size.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Electrochemical Properties and Myocyte Interaction of Carbon Nanotube Microelectrodes

et al. 2010

View full text Add to dashboard Cite

show abstract

“…In particular, the channels and reservoirs were coated with bovine serum albumin (BSA; 1%) to improve the surface hydrophilicity. 28,31 The advantages of the Cho et al 28 study are that gravity served as the driving force from the reservoirs, and operation was simple. The system could sort sperm successfully.…”

Section: Introductionmentioning

confidence: 99%

Isolation of Motile Spermatozoa with a Microfluidic Chip Having a Surface-Modified Microchannel

Huang

et al. 2014

SLAS Technology

View full text Add to dashboard Cite

“…Generally speaking, the hydro-philicity of many hydrophilic materials can be enhanced by introducing strong polar groups to the surface, increasing the roughness or a combination of the two. The specific methods include exposure to ultraviolet radiation, 14 plas-ma, 15-17 and electrochemical potential, 18 to name a few. In general, the treatment strongly depends on the material being used.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophilic Surfaces for Antifoqging and Antifouling Microfluidic Devices

Patel

Choi

Meng

2010

JALA: Journal of the Association for Laboratory Automation

View full text Add to dashboard Cite

Superhydrophilic surfaces are investigated for their potential to provide antifogging and antifouling properties for microfluidic devices. Two types of exemplary superhydrophilic surfaces are prepared, including polyester films treated by oxygen plasma and indium tin oxide-coated glasses treated by an electrochemical method. The superhydrophilicity of the treated surfaces presented herein is confirmed by their near-zero water contact angles. Their corresponding antifogging and antifouling capability is examined. The fluorescence microscopic study has confirmed the significantly reduced adhesion of the fluorescein and fluorescent proteins after the surfaces are treated to be superhydrophilic, indicating their potential for antifouling applications. The degradation of the superhydrophilicity under different humidity conditions is also investigated.

show abstract

Hydrophilic modification of multi-walled carbon nanotubes based neural microelectrode array

Cited by 3 publications

References 4 publications

Electrochemical Properties and Myocyte Interaction of Carbon Nanotube Microelectrodes

Electrochemical Properties and Myocyte Interaction of Carbon Nanotube Microelectrodes

Isolation of Motile Spermatozoa with a Microfluidic Chip Having a Surface-Modified Microchannel

Superhydrophilic Surfaces for Antifoqging and Antifouling Microfluidic Devices

Contact Info

Product

Resources

About