Piezoelectric force microscopy (PFM) and Raman confocal have been used for studying the nanodomain structures in congruent LiNbO3 LiTaO3 crystals. The high-resolution images at surface were observed via PFM. has visualization of bulk layer-by-layer scanning various depths. It shown experimentally that obtained different depths correspond to domain polar moments: deeper nanodomain, earlier moment. Such a correlation was applied reconstruction evolution with charged walls. studied highly...

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation V. Ya. Shur, D. K. Kuznetsov, E. A. Mingaliev, M. Yakunina, I. Lobov, Ievlev; In situ investigation of formation self-assembled nanodomain structure in lithium niobate after pulse laser irradiation. Appl. Phys. Lett. 22 August 2011; 99 (8): 082901. https://doi.org/10.1063/1.3628646 Download citation file: Ris...

In this work, we demonstrate the application of micro-Raman spectroscopy for investigation neutral and charged domain walls in congruent MgO-doped lithium niobate single crystals. We present local changes intensity frequency three Raman lines vicinity discuss influence bulk screening depolarization field on these parameters.

Polarization reversal during heating-cooling cycles was investigated in MgO doped lithium niobate (MgO:LN) crystal using piezoresponse force microscopy. The essential dependence of the domain structure evolution scenario on maximal temperature cycle has been revealed experimentally. It shown that heating engineered matrix from room to 85 °C leads light size reduction isolated domains at edges, whereas 170 size. opposite strong effect formation and growth cooling after pulse have single...

The evolution of the self-assembled quasi-regular micro- and nanodomain structures after pulse infrared laser irradiation in congruent lithium niobate crystal was studied by situ optical observation. Several scenarios domain kinetics represented covering irradiated zone nets separated chains rays have been revealed. time dependence total length analyzed terms modified Kolmogorov-Avrami theory. structure attributed to action pyroelectric field appeared during cooling. spatial distribution...

The current paper presents a piezoelectric bimorph actuator produced by direct bonding of lithium niobate wafers with the mirrored Y and Z axes. Direct technology allowed to fabricate bidomain plate precise positioning ideally flat domain boundary. By optimizing cutting angle (128° Y-cut), constant became as large 27.3 pC/N. Investigation voltage dependence bending displacement confirmed that has excellent linearity hysteresis-free. Decrease applied down mV range showed perfect up sub-nm...

The formation of the domain structure in congruent lithium niobate crystals by multiple pulse irradiation using an infrared laser was studied experimentally. qualitative change wall shape with increase number revealed. chains isolated nanodomains representing traces appeared after each samples irradiated polar surface covered indium–tin oxide layer. This effect allowed extraction detailed information about evolution shape. kinetics under action pyroelectric field has been considered....

Formation of the original dendrite snowflake-shape domains during fast cooling after heating above phase transition temperature by pulse laser irradiation was revealed in congruent lithium tantalate crystals. The effect attributed to polarization reversal under action spatially nonuniform pyroelectric field. Two stages domain shape evolution at surface were separated: (1) growth circular sideways motion walls and (2) backswitching leading formation snowflake domains. simulated spatial...

Imaging of ferroelectric domains using scanning electron microscopy is challenging as ferroelectrics are usually highly insulating. However, micro and nanodomain patterns can be directly visualized in secondary electrons proper parameters. Low accelerating voltage or local charge compensation allows visualizing isolated with sizes above 100 nm without any sample preparation. Nanodomain resolution about 3 after preparation the surface: controlled chemical etching to obtain nanoscale surface...

Abstract The polarization reversal induced by infrared pulse laser irradiation at elevated wafer temperatures was studied in single crystalline congruent lithium niobate LiNbO3. temperature dependence of the statistical parameters formed self-assembled nanoscale domain structures extracted. obtained behavior attributed to formation nanodomain due "discrete switching" under action pyroelectric field taking into account ineffective screening depolarization field. Keywords: Lithium...

The stable colloid with silver nanoparticles has been produced by irradiation of metal target in deionized water pulse 1064 nm laser. dependences the nanoparticle size and stability on fluence, ablation time, surface conditions target, thickness layer have studied. sizes shape measured dynamic light scattering scanning electron microscopy. It shown that decrease above leads to increase stability. proper number treatment cycles allowed prepare for production average about 34 obtained...

Formation of the micro- and nanodomain structures under action pyroelectric field induced by pulse IR laser heating was studied in congruent lithium tantalate. Two types self-organized domain were found. The three-dimensional maze-type structure with average period about 100 nm appeared central part irradiated zone heated above Tc. self-similar oriented rays nanoscale width formed at edge zone. obtained increase distance between for irradiation elevated temperatures attributed to decrease field.

The formation of quasi-regular stripe nanodomain structure induced by ultraviolet pulse laser irradiation was studied in single crystalline congruent lithium niobate LiNbO3. It has been shown that the domain with average period about 4 μm consists “straight” and “wave-like” rays. scanning electron microscopy allows us to reveal rays represent quasi-periodic arrays individual nanodomains size 50–200 nm 100–500 nm. spatial frequency multiplication structures revealed.

Formation of the ring-like patterns silver nanoparticles (NPs) during drying colloid drop caused by coffee ring effect has been studied experimentally and computer simulation. The shape evolution jump-like motion its contact line was in situ observed. Two interleaved stages were separated for odd represent decreasing height at constant base radius even – fast shift volume. proposed model allows extracting parameters characterizing formation NPs pattern drop.

Formation of nanodomain structures during cooling after pulse heating by infrared laser has been studied in congruent lithium tantalate (CLT) and niobate (CLN) single crystals. In situ study the domain structure evolution allowed to reveal that CLN isolated domains appeared at edges irradiated zone grew center. contrast, quasi-regular stripe CLT near edge zone. The difference attributed lower Curie temperature larger pyroelectric coefficient CLT. self-organized can be used for periodical...

The generation of micro-droplets nutrient medium with living cells by pulsed electrohydrodynamic printing has been studied. In-situ visualization high-speed camera made it possible to measure the characteristic times droplet process and determine optimal parameters. Maximal frequency stable was achieved at 700 Hz. This technique applied successfully for drop-on-demand culture live HeLa yeasts.

The domain structure evolution has been studied in congruent lithium niobate crystals with surface layers modified by three different proton exchange techniques. significant decrease of the nucleation threshold field and qualitative change rays growth have revealed. formation a broad boundary dendrite as result nanodomains merging front moving demonstrated. obtained effects attributed to features kinetics induced built-in electric retardation bulk screening depolarization field.

AbstractThe droplet generation under the action of pyroelectric field created by uniform heating or cooling monodomain lithium tantalate plate was studied. The droplets dielectric and conductive liquid with volume below picoliter have been deposited on glass substrate good reproducibility. It shown that drying dispensed colloid allowed producing circular ring-like micron-size patterns Ag nanoparticles substrate. numerical simulation attractive force induced which is applied to drop us...

A new concept of pyroelectric electrohydrodynamic system for deposition the micron size droplets at predetermined position on substrate with high accuracy using field created by lithium tantalate tailored domain structure has been proposed. The optimal geometry pattern obtained computer simulation spatial distribution surface pressure acting liquid/vapor interface induced field. proposed technique was applied to dispense silicon oil and water solution amino acid glycine.

The active substrates with rings of silver nanoparticles arising by drying sessile colloid drops were used for realization the surface-enhanced Raman scattering. colloids have been produced laser ablation in water using pulse Yb fiber laser. droplets diameter down to 10 μm dispensed electrohydrodynamic technique means pyroelectric field lithium tantalate plate. optimal spatial distribution hotspots was obtained substrate covered micron-size nanoparticles. method applied various organic...

Formation of the micro- and nanodomain structures in congruent lithium tantalate single crystal under action pyroelectric field induced by pulse infrared laser irradiation at elevated temperatures was investigated. Three types self-organized domain were obtained: (1) self-similar structure formed regions heated below Curie temperature, (2) maze-type structure, (3) irregular-shaped isolated domains above temperature. The results calculation time dependent spatial distribution temperature have...

The detail experimental study of the domain kinetics in wide field range was carried out a uniaxial ferroelectric lead germanate Pb 5 Ge 3 O 11 with optically distinguishable 180° domains. application stroboscopic method allows us to realize situ super-fast during cyclic switching microsecond range. Three qualitatively distinctive regimes evolution: “slow”, “fast”, and “super-fast” were revealed statistically analyzed. explanation observed effects is based on taking into account variation...

Domain structure evolution in congruent lithium niobate single crystals under multiple infrared laser pulse irradiation was studied. The of narrow domain rays appeared after the first became denser with number due to ray widening and intensive fingering, which led increasing walls density. almost constant wall density central region irradiated zone significantly increased near edge. Increase initial crystal temperature decrease obtained radial dependence attributed computer simulated spatial...