Optical creation of a supercrystal with three-dimensional nanoscale periodicity

Stoica, Vladimir; Laanait, Nouamane; Dai, Cheng; Hong, Zijian; Yuan, Yakun; Zhang, Z.; Lei, Shiming; McCarter, Margaret R.; Yadav, Ajay K.; Damodaran, Anoop R.; Das, Sujit; Stone, Greg; Karapetrova, Jenia; Walko, Donald A.; Zhang, X.; Martin, Lane W.; Ramesh, R.; Chen, Lei; Wen, Haidan; Gopalan, Venkatraman; Freeland, J. W.

doi:10.1038/s41563-019-0311-x

Cited by 135 publications

(122 citation statements)

References 29 publications

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“…The centrality of crystallization phenomena in many scientific fields has spurred decades of research into this “secretive” process. By tuning the growth conditions, it is possible to steer the system down different kinetic pathways to produce transient or metastable states (e.g., polytetrahedral or disordered phases) on intermediate time–scales . In particular, non‐equilibrium routes to metastable states could unveil patterns not seen in equilibrium states.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, non‐equilibrium routes to metastable states could unveil patterns not seen in equilibrium states. Thus, an understanding of crystallization phenomena is the key to lock into place materials with morphologies and/or functionalities not present in equilibrium states . Particularly appealing are spiral eutectics, mixtures of two or more solid phases that grow simultaneously from a parent liquid phase and which arrange into intricate spiraling patterns, in some cases akin to a DNA helix.…”

Section: Introductionmentioning

confidence: 99%

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Multi‐Step Crystallization of Self‐Organized Spiral Eutectics

Moniri

Bale

Volkenandt

et al. 2020

Small

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A method for the solidification of metallic alloys involving spiral self‐organization is presented as a new strategy for producing large‐area chiral patterns with emergent structural and optical properties, with attention to the underlying mechanism and dynamics. This study reports the discovery of a new growth mode for metastable, two‐phase spiral patterns from a liquid metal. Crystallization proceeds via a non‐classical, two‐step pathway consisting of the initial formation of a polytetrahedral seed crystal, followed by ordering of two solid phases that nucleate heterogeneously on the seed and grow in a strongly coupled fashion. Crystallographic defects within the seed provide a template for spiral self‐organization. These observations demonstrate the ubiquity of defect‐mediated growth in multi‐phase materials and establish a pathway toward bottom‐up synthesis of chiral materials with an inter‐phase spacing comparable to the wavelength of infrared light. Given that liquids often possess polytetrahedral short‐range order, our results are applicable to many systems undergoing multi‐step crystallization.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multi‐Step Crystallization of Self‐Organized Spiral Eutectics

Moniri

Bale

Volkenandt

et al. 2020

Small

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“…Despite some physical, chemical, and technical problems that are still unsolved, several strategies have been presented to take aim at these issues, including post-irradiation of colloids [13,14], different liquid handling configuration [15,16], optimization of the focusing conditions and liquid levels [17,18], selection of the appropriate liquid or stabilizer agent [19,20], and the optimization of the laser parameters [21]. In this sense, to explore in PLAL the wide range of opportunities that bring the unique properties of femtosecond lasers is an appealing hot topic of research not only due to the aim to increase nanoparticle production but also to generate structural modifications and new material phases only achievable with ultrafast and ultraintense pulsed radiation [22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Overcoming the barrier of nanoparticle production by femtosecond laser ablation in liquids using simultaneous spatial and temporal focusing

Doñate‐Buendía¹,

Fernández‐Alonso²,

Láncis³

et al. 2019

Photon. Res.

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There exists an increasing demand of industrial-scale production of high-purity ligand-free nanoparticles due to the continuous development of biomedicine, catalysis, and energy applications. In this contribution, a simultaneous spatial and temporal focusing (SSTF) setup is first proposed for increasing nanoparticle productivity of the eco-friendly pulsed laser ablation in liquids (PLAL) technique. In spite of the fact that femtosecond pulses have proved to achieve higher ablation rates in air than picosecond pulses, in PLAL this is reversed due to the nonlinear energy losses in the liquid. However, thanks to the incorporation of SSTF, the energy delivered to the target is increased up to 70%, which leads to a nanoparticle production increase of a 2.4 factor. This breaks a barrier toward the employment of femtosecond lasers in high-efficiency PLAL.

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“…At least two different approaches have been proposed: (1) to use the tunnel junction at the source/channel end of the MOSFET (called the tunnel field-effect transistor or tunnel FET) [11][12][13][14]; and (2) to use the negative gate capacitance of the MOSFET. Negative capacitance has been observed in many different materials and device structures including ferroelastic switches, oxidesuperlattices, supercrystals, and light-emitting diodes [15][16][17][18][19][20][21]. It can be practically achieved by utilizing ferroelectric dielectric materials such as AlInN [8], BiFeO 3 [9], and HfZrO 2 [14], due to the lag of the polarization charge inside the ferroelectric materials with respect to the change of applied voltage.…”

Section: Introductionmentioning

confidence: 99%

Subthreshold Characteristics of a Metal-Oxide–Semiconductor Field-Effect Transistor with External PVDF Gate Capacitance

Lin

Tao

2019

Crystals

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An organic ferroelectric capacitor, using polyvinylidene difluoride (PVDF) as the dielectric, was fabricated. By connecting the PVDF capacitor in series to the gate of a commercially purchased metal-oxide–semiconductor field-effect transistor (MOSFET), drain current (ID)–drain voltage (VD) characteristics and drain current (ID)–gate voltage (VG) characteristics were measured. In addition, the subthreshold slopes of the MOSFET were determined from the ID–VG curves. It was found that the subthreshold slope could be effectively reduced by 23% of its original value when the PVDF capacitor was added to the gate of the MOSFET.

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Optical creation of a supercrystal with three-dimensional nanoscale periodicity

Cited by 135 publications

References 29 publications

Multi‐Step Crystallization of Self‐Organized Spiral Eutectics

Multi‐Step Crystallization of Self‐Organized Spiral Eutectics

Overcoming the barrier of nanoparticle production by femtosecond laser ablation in liquids using simultaneous spatial and temporal focusing

Subthreshold Characteristics of a Metal-Oxide–Semiconductor Field-Effect Transistor with External PVDF Gate Capacitance

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