OOIR: Observatory of International Research

Papers

(The H4-Index of Applied Physics Express is 25. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-01-01 to 2026-01-01.)

Article	Citations
Vertical GaN p–n diode with deeply etched mesas by contactless photo-electrochemical etching	65
Formation of neuron-microelectrode junction mediated by a synapse organizer	63
Magnetism control of thin CoFeB layers by ferroelectric polarization	61
Detecting the orbital angular momentum from speckle via convolutional neural network	49
Thermoelectric measurements of nanomaterials by nanodiamond quantum thermometry	48
Revealing the quadrupole radiation of liquid gallium nanospheres	44
High throughput observation of latent images on resist using laser-based photoemission electron microscopy	43
Enhancement of short-wavelength range responsibility for PIN silicon photodetectors using additional fluorescent carbon quantum dots nanoparticles	42
Evaluation and bioparticle density correlation analysis of extended gate HEMT sensors for biological detection from microscopic view	35
Broadband optical wavelength conversion through four-wave mixing in W3-type AlGaAs photonic crystal waveguides	33
N-polar GaN p-n junction diodes with low ideality factors	32
Axis thermal expansion switching in transition-metal zirconides TrZr₂ by tuning the c/a ratio	32
Wide-field imaging of the magnetization process in soft magnetic-thin film using diamond quantum sensors	30
RFSoC-based radio-frequency reflectometry in gate-defined bilayer graphene quantum devices	30
One-step assembly of TA-FeIII supramolecular shell on AgNPs surface for regulating fluorescence intensity of quantum dots	30
Centimeter-scale laser lift-off of an AlGaN UVB laser diode structure grown on nano-patterned AlN	30
Strong light confinement and optical force enhancement in phosphorene with acoustic plasmons	30
Optically pumped lasing in a single crystal cavity of thiophene/phenylene co-oligomers grown via improved crystal growth methods in solution	29
Magnetic field tuning of photoelectric and photoluminescence effects in BiFe_0.9Co_0.1O₃ thin film	29
Vortex structure in relaxed BaTiO₃/SrTiO₃ superlattice	28
Femtosecond Z-scan measurement of third-order nonlinear optical response of fluorine-doped tin oxide	27
Lightweight and high-precision materials property prediction using pre-trained Graph Neural Networks and its application to a small dataset	27
Effective suppression of interface states in recessed-gate MIS-HEMTs by TMAH wet etching	26
Quartz-free hydride vapor phase epitaxy for production of large size GaN-on-GaN epitaxial wafers	26
High power diode lasers at 1470 nm with continuous power exceeding 10 W	25

Layer-number tailoring and template-induced orientation control of 2D perovskites on 3D perovskites by adopting the Dion–Jacobson phase	25
Plasmon–exciton coupling in a dimer cavity revisited: effect of excitonic dipole orientation	25