Rational shaping of hydrogel by electrodeposition under fluid mechanics for electrochemical writing on complex shaped surfaces at microscale

Helú, Mariela Alicia Brites; Liu, Liang

doi:10.1016/j.cej.2021.129029

Cited by 12 publications

(10 citation statements)

References 64 publications

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“…Moreover, a preparation method named "Electrodeposition + Pulling" was developed to improve the physical resolution by reducing the size of the gel, which has been described in detail elsewhere. 15,40,186,187 Similar to SECCM, the measurement of SGECM is highly informative in both topography and electrochemical activity. As illustrated in Figure 4B, both the shear force and the current feedback can be used as response signals to determine if the probe is in touch with the sample surface.…”

Section: ■ Microcapillary Cell Techniquementioning

confidence: 99%

“…Therefore, it is necessary to conduct quantitative research to determine the physical resolution of diverse probes under different test parameters in SGECM. Moreover, a preparation method named “Electrodeposition + Pulling” was developed to improve the physical resolution by reducing the size of the gel, which has been described in detail elsewhere. ,,, …”

Section: Scanning Gel Electrochemical Microscopymentioning

confidence: 99%

“…J. , Vol 416, Helú, M. A. B.; Liu, L. Rational Shaping of Hydrogel by Electrodeposition under Fluid Mechanics for Electrochemical Writing on Complex Shaped Surfaces at Microscale, 129029 (ref ). Copyright 2021, with permission from Elsevier.…”

Section: Scanning Gel Electrochemical Microscopymentioning

confidence: 99%

See 2 more Smart Citations

Small-Area Techniques for Micro- and Nanoelectrochemical Characterization: A Review

Lai

Cai

et al. 2023

Anal. Chem.

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Section: ■ Microcapillary Cell Techniquementioning

confidence: 99%

Section: Scanning Gel Electrochemical Microscopymentioning

confidence: 99%

See 1 more Smart Citation

Small-Area Techniques for Micro- and Nanoelectrochemical Characterization: A Review

Lai

Cai

et al. 2023

Anal. Chem.

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“…Functional polymers have been utilized in various applications, such as soft electronics [54], biomedical engineering [55], energy storage [56], and smart sensors [57,58]. Recently, several studies have reported the precise and rapid meniscus-guided printing of polymeric materials, including polypyrrole (PPy) [17,24,59], poly(3,4ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) [ 60,61], polyaniline (PANI) [62], polystyrene (PS) [63], chitosan hydrogel [64], and block copolymers [65]. The meniscus-guided method can pattern these polymers into micro/nanoscale structures with various morphologies, such as pillar arrays, arches, tubes, meshes, and walls, paving the way for new applications in electronics, mechanics, and photonics.…”

Section: Polymersmentioning

confidence: 99%

Recent advances in meniscus-on-demand three-dimensional micro- and nano-printing for electronics and photonics

Hu,

Huan,

Liu

et al. 2023

Int. J. Extrem. Manuf.

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The continual demand for modern optoelectronics with a high integration degree and customized functions has increased requirements for nanofabrication methods with high resolution, freeform, and mask-free. Meniscus-on-demand three-dimensional (3D) printing is a high-resolution additive manufacturing technique that exploits the ink meniscus formed on a printer nozzle and is suitable for the fabrication of micro/nanoscale 3D architectures. This method can be used for solution-processed 3D patterning of materials at a resolution of up to 100 nm, which provides an excellent platform for fundamental scientific studies and various practical applications. This review presents recent advances in meniscus-on-demand 3D printing, together with historical perspectives and theoretical background on meniscus formation and stability. Moreover, this review highlights the capabilities of meniscus-on-demand 3D printing in terms of printable materials and potential areas of application, such as electronics and photonics.

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“…In a work by Kim et al, the method allows the production of high-aspect-ratio PPy nanowires, in which the radius of wires could be minimized to 50 nm . However, the meniscus evolves unstable interactions as the diameter increases owing to insufficient surface tension, thus obstructing the fabrication of a microstructured subject. , On the other hand, the insufficient deposition rate hinders the applications of ECAM processing . A flow-rate-controlled double-nozzle system, derived from a supply–suction apparatus, was developed for mesoscale ECAM fabrications .…”

Section: Introductionmentioning

confidence: 99%

How Anionic Dopants Impact the Electrochemical Additive Manufacturing of Polypyrrole

Wang,

Cheng,

Zhang

et al. 2023

ACS Appl. Polym. Mater.

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Electrochemical additive manufacturing (ECAM), based on meniscus-guided deposition, is an emerging technique for the fabrication of conducting polymers. The ECAM fabrication of polypyrrole entails the electrochemical polymerization of pyrrole monomers and additive manufacturing of polymers. Herein, we investigate the 2-naphthalene sulfonic acid sodium salt (NSA-a), sodium naphthalene-2,6-disulfonate (NSA-b), and 4,5-dihydroxy-1,3-benzenedisulfonic acid disodium salt (Tiron) as anionic dopants for the ECAM processing of polypyrrole. The analysis of the dopants, encompassing the electrochemical tests and electron microscopy measurements coupled with energy-level calculations, provides an insight into the influence of their structure and functional groups on polypyrrole depositions. The increase in the charge/mass ratio of the dopant results in lower deposition potential, higher deposition rate, and reduced particle agglomeration. Atomic force microscopy tests reveal that the employment of Tiron demonstrates improved deformation tolerance with stronger adhesion due to the chelating properties. The high electronic conductivity of Tiron-doped polypyrrole is attributed to multiple −SO3 – groups, which enhance the interchain mobility of charge carriers. Tiron-doped polypyrrole micropillars are successfully produced via pulling of the meniscus. The findings present an opportunity for the optimization and engineering of ECAM fabrications.

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Rational shaping of hydrogel by electrodeposition under fluid mechanics for electrochemical writing on complex shaped surfaces at microscale

Cited by 12 publications

References 64 publications

Small-Area Techniques for Micro- and Nanoelectrochemical Characterization: A Review

Small-Area Techniques for Micro- and Nanoelectrochemical Characterization: A Review

Recent advances in meniscus-on-demand three-dimensional micro- and nano-printing for electronics and photonics

How Anionic Dopants Impact the Electrochemical Additive Manufacturing of Polypyrrole

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