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 2021-11-01 to 2025-11-01.)

Article	Citations
Vertical GaN p–n diode with deeply etched mesas by contactless photo-electrochemical etching	74
Formation of neuron-microelectrode junction mediated by a synapse organizer	73
Magnetism control of thin CoFeB layers by ferroelectric polarization	63
Detecting the orbital angular momentum from speckle via convolutional neural network	61
Thermoelectric measurements of nanomaterials by nanodiamond quantum thermometry	60
One-step assembly of TA-FeIII supramolecular shell on AgNPs surface for regulating fluorescence intensity of quantum dots	47
Revealing the quadrupole radiation of liquid gallium nanospheres	43
Collective residue interactions in trimer complexes of SARS-CoV-2 spike proteins analyzed by fragment molecular orbital method	43
High throughput observation of latent images on resist using laser-based photoemission electron microscopy	42
Femtosecond Z-scan measurement of third-order nonlinear optical response of fluorine-doped tin oxide	41
Enhancement of short-wavelength range responsibility for PIN silicon photodetectors using additional fluorescent carbon quantum dots nanoparticles	35
Evaluation and bioparticle density correlation analysis of extended gate HEMT sensors for biological detection from microscopic view	33
Broadband optical wavelength conversion through four-wave mixing in W3-type AlGaAs photonic crystal waveguides	33
Wide-field imaging of the magnetization process in soft magnetic-thin film using diamond quantum sensors	31
Strong light confinement and optical force enhancement in phosphorene with acoustic plasmons	30
Centimeter-scale laser lift-off of an AlGaN UVB laser diode structure grown on nano-patterned AlN	30
Effective suppression of interface states in recessed-gate MIS-HEMTs by TMAH wet etching	30
Quartz-free hydride vapor phase epitaxy for production of large size GaN-on-GaN epitaxial wafers	29
Optically pumped lasing in a single crystal cavity of thiophene/phenylene co-oligomers grown via improved crystal growth methods in solution	28
Vortex structure in relaxed BaTiO₃/SrTiO₃ superlattice	28
Axis thermal expansion switching in transition-metal zirconides TrZr₂ by tuning the c/a ratio	27
RFSoC-based radio-frequency reflectometry in gate-defined bilayer graphene quantum devices	26
Magnetic field tuning of photoelectric and photoluminescence effects in BiFe_0.9Co_0.1O₃ thin film	26
Lightweight and high-precision materials property prediction using pre-trained Graph Neural Networks and its application to a small dataset	26
Layer-number tailoring and template-induced orientation control of 2D perovskites on 3D perovskites by adopting the Dion–Jacobson phase	25

Sub-pT magnetic field detection by tunnel magneto-resistive sensors	25
Plasmon–exciton coupling in a dimer cavity revisited: effect of excitonic dipole orientation	25
N-polar GaN p-n junction diodes with low ideality factors	25