Reversible Rectification of Microscale Ferroelectric Junctions Employing Liquid Metal Electrodes

Ni, Lifa; Li, Xiaojin; Zhao, Zhe; Nam, Jongwoo; Wu, Pengfei; Wang, Qingling; Lee, Takhee; Liu, Hongliang; Dong, Xiaopeng

doi:10.1021/acsami.0c22925

Cited by 9 publications

(6 citation statements)

References 60 publications

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“…The results show that the rectification direction can be reversed by controlling the ambient temperature and thus the temperature‐controlled rectification can be realized (Figure 26e). [ 358 ] The underlying proposed mechanism for these observations involves carrier trapping/detrapping by surface defects.…”

Section: Applications Of Egainmentioning

confidence: 99%

Smart Eutectic Gallium–Indium: From Properties to Applications

et al. 2022

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Eutectic gallium–indium (EGaIn), a liquid metal with a melting point close to or below room temperature, has attracted extensive attention in recent years due to its excellent properties such as fluidity, high conductivity, thermal conductivity, stretchability, self‐healing capability, biocompatibility, and recyclability. These features of EGaIn can be adjusted by changing the experimental condition, and various composite materials with extended properties can be further obtained by mixing EGaIn with other materials. In this review, not only the are unique properties of EGaIn introduced, but also the working principles for the EGaIn‐based devices are illustrated and the developments of EGaIn‐related techniques are summarized. The applications of EGaIn in various fields, such as flexible electronics (sensors, antennas, electronic circuits), molecular electronics (molecular memory, opto‐electronic switches, or reconfigurable junctions), energy catalysis (heat management, motors, generators, batteries), biomedical science (drug delivery, tumor therapy, bioimaging and neural interfaces) are reviewed. Finally, a critical discussion of the main challenges for the development of EGaIn‐based techniques are discussed, and the potential applications in new fields are prospected.

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Section: Applications Of Egainmentioning

confidence: 99%

Smart Eutectic Gallium–Indium: From Properties to Applications

et al. 2022

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“…Both Ga and Ga-In have an excellent electrical conductivity and good flowability under thermal conditions (melting (m.p. ): 20–30 °C). − Ga-In has been proposed as a potential liquid metal that has novel applications, such as being a microelectrode to probe the properties of microscale materials. , This investigation assessed the ability of Ga and Ga-In microcapsules to autonomously restore the electrical conductivity of Ag lines during stretching at a high temperature (140 ± 5 °C), and the results were compared and discussed.…”

Section: Introductionmentioning

confidence: 99%

Microencapsulated Liquid Metals for the Autonomous Restoration of In-Mold Electronic Circuits

Hsiao

Chen

2022

ACS Appl. Electron. Mater.

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In-mold electronics (IME) is a revolutionary way to form three-dimensional molded films with printed circuitry. However, thermoforming and molding processes inevitably cause microcracks in the printed circuit lines that lower the electronic conductivity. Here, two types of microcapsules containing liquid metals, gallium (Ga) and gallium-indium (Ga-In), in a poly(ureaformaldehyde) shell are synthesized, and their potential as an additive in restoring the conductivity of circuit lines for IME is assessed. Because the microcapsules have good chemical compatibility with Ag paste, they are uniformly distributed in the circuit lines. Tensile test results show that both Ga and Ga-In microcapsules efficiently reduce the resistance increase due to fractured structures after stretching. Nevertheless, incorporating an excess amount of microcapsules results in a fragile matrix in Ag lines, and the aggravated damage causes the resistance to exceed that without microcapsule addition. Compared to the Ga microcapsules, the Ga-In microcapsules perform better in restoring circuit lines, and the reason is discussed.

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“…[ 17 ] In as‐grown KTN crystals, both 90° and 180° domains are randomly arranged throughout the crystal, thus providing rich RLVs to support three‐dimensional QPM conditions. [ 18–22 ] However, these natural random domains are difficult to modulate and the QPM second harmonic generation (SHG) conversion is lowly efficient (≈2 × 10 −5 ). [ 23 ] In previous work, KTN crystal has been confirmed to endow ultrahigh d 33 (≈84 pm V −1 ) [ 24 ] among ferroelectric materials, which is three times larger than LN and five times larger than KTiOPO 4 (KTP).…”

Section: Introductionmentioning

confidence: 99%

“…[17] In as-grown KTN crystals, both 90° and 180° domains are randomly arranged throughout the crystal, thus providing rich RLVs to support three-dimensional QPM conditions. [18][19][20][21][22] However, these natural random domains are difficult to Since the first proposal of quasi-phase-matching (QPM) in 1962, finding new nonlinear photonic crystals has been an attractive topic in nonlinear optics fields. However, combining high conversion efficiency and wide operation range concurrently into one single crystal remains a great challenge.…”

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confidence: 99%

Periodically Poled Nonlinear Photonic Crystal KTa_0.51Nb_0.49O₃ Combining Wide Transparent Range and Large Quadratic Coefficient

Liu

Tian

et al. 2022

Advanced Optical Materials

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coefficients, which have been utilized for obtaining the generation of broadband light at new frequencies and its control. [1,2] In parametric conversion processes, phase matching (PM) condition is the prerequisite for highly efficient energy conversion, corresponding to the conservation of momentum in the nonlinear optical interaction. In order to overcome the limitations of traditional angular PM by optical birefringence, several applicable PM strategies have been proposed, comprising quasi-phase-matching (QPM), [3,4] Fresnel phase-matching (FPM), [5] additional periodic phase (APP), [6] random quasi-phasematching (RQPM), [7] etc. Among them, periodically poled engineered crystals, especially lithium niobate waveguides on insulators (LNOI), [8][9][10] have been extensively developed as a unique platform for integrated photonic applications on quantum information, [11] smart chips, [12] remote communications, [13] to name just a few examples. [14][15][16] The periodically poling technique is mainly applied in ferroelectric materials, thus producing designed domain inversion and reciprocal lattice vectors (RLVs) to compensate for the phase mismatch. Compared with angular birefringent phase-matching (BPM), the QPM technique has two apparent advantages. [10] First, it can utilize the largest nonlinear tensor element d ij . For example, the effective d 33 (27-34 pm V −1 ) in periodically poled LiNbO 3 (PPLN) is three times larger than d 31 (4.5 pm V −1 ) that is utilized in the BPM technique. Second, in principle, QPM allows efficient nonlinear interactions at any frequencies in the transparent range of the ferroelectric materials, including inaccessible wavelength by the BPM technique. Therefore, finding new QPM ferroelectric crystals with large d ij and wide transparency simultaneously is an urgent but a challenging task.KTa 1-x Nb x O 3 (KTN) perovskite is a mixed crystal of KTaO 3 and KNbO 3 . It is a typical displacement-type ferroelectric crystal with a tunable Curie temperature T c by adjusting Ta/Nb ratio. [17] In as-grown KTN crystals, both 90° and 180° domains are randomly arranged throughout the crystal, thus providing rich RLVs to support three-dimensional QPM conditions. [18][19][20][21][22] However, these natural random domains are difficult to Since the first proposal of quasi-phase-matching (QPM) in 1962, finding new nonlinear photonic crystals has been an attractive topic in nonlinear optics fields. However, combining high conversion efficiency and wide operation range concurrently into one single crystal remains a great challenge. Herein, a periodically poled KTa 0.51 Nb 0.49 O 3 (PPKTN) is fabricated as a one-dimensional nonlinear photonic crystal for the first time, to the authors' best knowledge. Benefitting from the large quadratic nonlinear coefficient, the QPM second harmonic generation (SHG) at 1030 nm is realized with a high conversion efficiency of up to 39%. More importantly, KTN crystal possesses wider midinfrared spectral transparency (0.4-8.0 µm) than commercialized LiNbO 3 and KTiOPO ...

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Reversible Rectification of Microscale Ferroelectric Junctions Employing Liquid Metal Electrodes

Cited by 9 publications

References 60 publications

Smart Eutectic Gallium–Indium: From Properties to Applications

Smart Eutectic Gallium–Indium: From Properties to Applications

Microencapsulated Liquid Metals for the Autonomous Restoration of In-Mold Electronic Circuits

Periodically Poled Nonlinear Photonic Crystal KTa_0.51Nb_0.49O₃ Combining Wide Transparent Range and Large Quadratic Coefficient

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Reversible Rectification of Microscale Ferroelectric Junctions Employing Liquid Metal Electrodes

Cited by 9 publications

References 60 publications

Smart Eutectic Gallium–Indium: From Properties to Applications

Smart Eutectic Gallium–Indium: From Properties to Applications

Microencapsulated Liquid Metals for the Autonomous Restoration of In-Mold Electronic Circuits

Periodically Poled Nonlinear Photonic Crystal KTa0.51Nb0.49O3 Combining Wide Transparent Range and Large Quadratic Coefficient

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Product

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Periodically Poled Nonlinear Photonic Crystal KTa_0.51Nb_0.49O₃ Combining Wide Transparent Range and Large Quadratic Coefficient