In situ self-assembly and photopolymerization for hetero-phase synthesis and patterning of conducting materials using soft oxometalates in thermo-optical tweezers

Ghosh, Subhrokoli; Das, Santu; Paul, S.; Thomas, Preethi; Roy, Basudev; Mitra, Partha; Roy, Soumyajit; Banerjee, Ayan

doi:10.1039/c7tc01941f

Cited by 27 publications

(51 citation statements)

References 57 publications

(75 reference statements)

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“…The combination of thermally driven reactions with microbubble assisted printing achieved simultaneous synthesis and printing of many materials such as SOMs, [ 178 ] ZnO, [ 179 ] Fe 2 O 3 , [ 177 ] oxidized Cu, [ 177 ] Ag, [ 177 ] Pt, [ 177 ] and RhAu nanoalloys. [ 180 ] More complex structures include the metal organic framework (MOF) FeBTC, [ 176 ] and combinations of SOMs with PANI and polypyrrole.…”

Section: Directed Local Synthesismentioning

confidence: 99%

“…[ 180 ] More complex structures include the metal organic framework (MOF) FeBTC, [ 176 ] and combinations of SOMs with PANI and polypyrrole. [ 178 ] The minimal linewidths were ≈0.5–8 µm. [ 176–180 ]…”

Section: Directed Local Synthesismentioning

confidence: 99%

“…The objective lenses used were 40×, [ 176,177 ] 50×, [ 176 ] and 100× [ 178–180 ] with NAs of 0.6 [ 176,177 ] and 1.3. [ 178,179 ] Laser wavelengths of 532 nm [ 176,177,180 ] and 1064 nm [ 178,179 ] were commonly used with powers between 0.6 and 50 mW. [ 176–180 ] The demonstrated stage velocities were 1–40 µm s −1 .…”

Section: Directed Local Synthesismentioning

confidence: 99%

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Laser‐Based Printing: From Liquids to Microstructures

Armon

Greenberg

Edri

et al. 2021

Adv Funct Materials

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Assembly of materials into microstructures under laser guidance is attracting wide attention. The ability to pattern various materials and form 2D and 3D structures with micron/sub‐micron resolution and less energy and material waste compared with standard top‐down methods make laser‐based printing promising for many applications, for example medical devices, sensors, and microelectronics. Assembly from liquids provides a smaller feature size than powders and has advantages over other states of matter in terms of relatively simple setup, easy handling, and recycling. However, the simplicity of the setup conceals a variety of underlying mechanisms, which cannot be identified simply according to the starting or resulting materials. This progress report surveys the various mechanisms according to the source of the material—preformed or locally synthesized. Within each category, methods are defined according to the driving force of material deposition. The advantages and limitations of each method are critically discussed, and the methods are compared, shedding light on future directions and developments required to advance this field.

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Section: Directed Local Synthesismentioning

confidence: 99%

Section: Directed Local Synthesismentioning

confidence: 99%

Section: Directed Local Synthesismentioning

confidence: 99%

See 1 more Smart Citation

Laser‐Based Printing: From Liquids to Microstructures

Armon

Greenberg

Edri

et al. 2021

Adv Funct Materials

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“…have been patterned , . Recently, a reaction chip was fabricated to demonstrate site specific heterogeneous catalysis, while insitu polymerization and patterning of conducting polymers (pyrrole and aniline) with SOMs have also been performed by us using this technique …”

Section: Introductionmentioning

confidence: 99%

Inexpensive Design of a Bio‐Chip for Disease Diagnostics: Molecular Biomarker Sensing Microchip Patterned from a Soft Oxometalate‐Perylene‐Based Hybrid Composite using Thermo‐Optical Laser Tweezers

et al. 2018

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In this work, we have developed linear micro-patterns of phosphotungstic acid soft oxometalate (SOM) and perylene (as fluorophore) hybrid composite on a glass substrate using a thermo-optical tweezers set-up, and used it for sensing of biologically important molecules such as glucose, uric acid and ascorbic acid. Bulk scale studies on the SOM-fluorophore hybrid were initially performed to optimize the fabrication of the pattern. The aqueous dispersion of the hybrid composite [a] EFAML, College

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“…The EMI shielding effectiveness (SE) of a conducting polymeric composite depends on many factors, such as the conductive filler's intrinsic conductivity, size, aspect ratio, content, distribution, and interfacing action, and so on . In recent years, increasingly more conductive fillers, such as carbon based nanomaterials and metalized carbon materials, have been developed, creating more options for conducting composites . For example, Huang et al compared the EMI shielding effectiveness of web‐like structural biocarbon nanofibers before and after being coated with Ni–Co metal and showed that the SE of Ni–Co coated biocarbon nanofibers is significantly higher than that of uncoated biological carbon nanofibers under the same mass fraction ; Su et al investigated the EMI SE of electroless plating of Ni–P alloy and Ni–P–Cu alloys on CFs/PEEK composite and found that all the alloy coatings dramatically improved the SE of the substrate materials .…”

Section: Introductionmentioning

confidence: 99%

Resistance gradient polymeric electromagnetic shielding composites: Preparation and Characterization

et al. 2018

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Based on the principle of Stokes’ law, a series of polyvinyl butyral (PVB)/nickel (Ni) composite films with a resistance gradient were successfully prepared using a suspension casting method with the aid of gravity. Gradient distribution structure, conductive and mechanical properties, and electromagnetic shielding effectiveness (SE) were investigated. Scanning electron microscopy (SEM) observations and energy‐dispersive spectrometer (EDS) detection show that the gradient distribution of Ni particles in the PVB matrix was formed along the thickness‐direction. A surface resistivity difference of 10 orders of magnitude appears between the top surface (PVB‐rich side) and the bottom surface (Ni‐rich side). Percolation transformation occurs in the range of Ni content of 3.0∼4.5 vol% at the Ni‐rich side, which is much lower than that of PVB/Ni composites with homogeneous Ni distribution. The gradient distribution structure grants the composite both good electromagnetic shielding performance and good mechanical properties. When the Ni loading reaches 10.5 vol% in the film, its SE value rises to 30 dB, which is 15 dB higher than that of a homogenous film with the same filler content. It is believed that electrically conductive gradient polymeric composites have potential application value in the field of electromagnetic shielding. POLYM. COMPOS., 40:1842–1849, 2019. © 2018 Society of Plastics Engineers

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In situ self-assembly and photopolymerization for hetero-phase synthesis and patterning of conducting materials using soft oxometalates in thermo-optical tweezers

Abstract: We use micro-bubble based thermo-optical tweezers to simultaneously synthesize, dope, and pattern conducting polymers to obtain unprecedented conductivity values.

Cited by 27 publications

References 57 publications

Laser‐Based Printing: From Liquids to Microstructures

Laser‐Based Printing: From Liquids to Microstructures

Inexpensive Design of a Bio‐Chip for Disease Diagnostics: Molecular Biomarker Sensing Microchip Patterned from a Soft Oxometalate‐Perylene‐Based Hybrid Composite using Thermo‐Optical Laser Tweezers

Resistance gradient polymeric electromagnetic shielding composites: Preparation and Characterization

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