Functional inks and printing of two-dimensional materials

Hu, Guohua; Kang, Joohoon; Ng, Leonard W. T.; Zhu, Xiaoxi; Howe, Richard C. T.; Jones, Callum; Hersam, Mark C.; Hasan, Tawfique

doi:10.1039/c8cs00084k

Cited by 462 publications

(498 citation statements)

References 262 publications

(484 reference statements)

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“…Up to now, CDs, due to their excellent photoluminescence, high dispersibility in water, and non-toxicity, appear to be suitable candidates as fluorescent inks for printing applications [11,12]. Printing methods, in general, have a very high impact in the field of material science [11][12][13][14][15][16]. In the last few years, there has been tremendous interest about printing techniques and especially inks, as a new approach for large-scale, high-speed fabrication of printed electronics, in contrast with techniques already used (lithography, etc.).…”

Section: Introductionmentioning

confidence: 99%

Fluorescent Carbon Dots Ink for Gravure Printing

Koutsioukis

Belessi

Georgakilas

2019

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In the present article, we describe the use of highly fluorescent carbon dots (CDs) for the preparation of an effective water-based carbon dot ink (CD-ink) for gravure printing. Carbon dots were prepared hydrothermally from citrate and triethylenetetramine, and mixed properly with certain resins that are used in gravure inks. The as-produced CD gravure ink was used successfully for printing high quality fluorescent images.

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Section: Introductionmentioning

confidence: 99%

Fluorescent Carbon Dots Ink for Gravure Printing

Koutsioukis

Belessi

Georgakilas

2019

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“…This value suggests that the ink is suitable for inkjet printing [42,43], allowing stable generation of single droplets under each electrical pulse. The low surface tension of our ink also ensures adequate wetting of a wide variety of substrates including glass and polymers [44][45][46]. More importantly, the binary solvent composition is shown to reduce the formation of 'coffee rings' (ring like material deposition concentrated at the edges of dried droplets [46,47]) through the Marangoni effect: the suspended BP flakes are uniformly distributed during drying, yielding continuous material deposition.…”

Section: Black Phosphorus Sa Fabrication and Characterizationmentioning

confidence: 99%

Q-switched Dy:ZBLAN fiber lasers beyond 3 μm: comparison of pulse generation using acousto-optic modulation and inkjet-printed black phosphorus

Woodward¹,

Majewski²,

Macadam³

et al. 2019

Opt. Express

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We report high-energy mid-infrared pulse generation by Q-switching of dysprosiumdoped fiber lasers for the first time. Two different modulation techniques are demonstrated. Firstly, using active acousto-optic modulation, pulses are produced with up to 12 µJ energy and durations as short as 270 ns, with variable repetition rates from 100 Hz to 20 kHz and central wavelengths tunable from 2.97 to 3.23 µm. Experiments are supported by numerical modeling, identifying routes for improved pulse energies and to avoid multi-pulsing by careful choice of modulator parameters. Secondly, we demonstrate passive Q-switching by fabricating an inkjet-printed black phosphorus saturable absorber, simplifying the cavity and generating 1.0 µJ pulses with 740 ns duration. The performance and relative merits of each modulation approach are then critically discussed. These demonstrations highlight the potential of dysprosium as a versatile gain medium for high-performance pulsed sources beyond 3 µm.

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“…Controlling the velocity, diameter, and shape of liquid jets, is crucial to produce fast-travelling liquid microdroplets for industrial and biomedical applications, including ink-jet printing, cleaning, and jet injectors for drug delivery through the skin [20][21][22][23][24][25][26][27]. The shape of the jet is of particular importance for inkjet printing, where a spherical jet tip and stable and reproducible drop formation are required [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Microfluidics control the ballistic energy of thermocavitation liquid jets for needle-free injections

Galvez

Fraters

Offerhaus

et al. 2020

Journal of Applied Physics

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Illuminating a water solution with a focused continuous wave laser produces a strong local heating of the liquid that leads to the nucleation of bubbles, also known as thermocavitation. During the growth of the bubble, the surrounding liquid is expelled from the constraining microfluidic channel through a nozzle, creating a jet. The characteristics of the resulting liquid jet was imaged using ultra-fast imaging techniques. Here, we provide a phenomenological description of the jet shapes and velocities, and compare them with a Boundary Integral numerical model. We define the parameter regime, varying jet speed, taper geometry and liquid volume, for optimal printing, injection and spray applications. These results are important for the design of energy-efficient needle-free jet injectors based on microfluidic thermocavitation. arXiv:2003.00934v1 [physics.flu-dyn]

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Functional inks and printing of two-dimensional materials

Cited by 462 publications

References 262 publications

Fluorescent Carbon Dots Ink for Gravure Printing

Fluorescent Carbon Dots Ink for Gravure Printing

Q-switched Dy:ZBLAN fiber lasers beyond 3 μm: comparison of pulse generation using acousto-optic modulation and inkjet-printed black phosphorus

Microfluidics control the ballistic energy of thermocavitation liquid jets for needle-free injections

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