Applied Physics Express and JJAP
@apexjjap.bsky.social
📤 302
📥 2027
📝 528
Applied Physics Express
#APEX
Japanese Journal of Applied Physics
#JJAP
#Physics
#Openaccess
#Impact
pinned post!
APEX-NEXT (Noteworthy Excellent Topics) We have created a collection of review articles on applied physics entitled "APEX-NEXT", where “NEXT” stands for “Noteworthy Excellent Topics”.
iopscience.iop.org/collections/...
#APEX
#Review
#Openaccess
#physics
2 months ago
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0
1
[2024 OPEN ACCESS] Ultra-thin optical power converters based on Gires–Tournois resonator configuration operating in high-order modes 2024 Appl. Phys. Express 17 072002
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#optical
#resonator
#OPC
18 minutes ago
0
0
0
[2025 OPEN ACCESS] Instantaneous deposition-rate modulator for vacuum vapor deposition: fabrication of polarization gradated organic film 2025 Appl. Phys. Express 18 021001
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#organic
#LED
#molecular
#Alq3
#velocity
#deposition
18 minutes ago
0
0
0
[2025 OPEN ACCESS] Improving radiation tolerance with room temperature annealing of pre-existing defects 2025 Appl. Phys. Express 18 017001
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#Radiation
#tolerance
#Zener
#diode
#ion
#irradiation
1 day ago
0
0
0
[2024 OPEN ACCESS] Room temperature optical coupling of neodymium ions to photonic crystal L3 cavity in gallium nitride semiconductor 2024 Appl. Phys. Express 17 072001
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#photonic
#crystal
#gallium
#nitride
#semiconductor
1 day ago
0
0
0
[Open Access] High-energy-resolution passivated implanted planar silicon detectors 2025 Jpn. J. Appl. Phys. 64 011004
iopscience.iop.org/article/10.3...
#JJAP
#physics
#Openaccess
#Alpha
#particle
#detector
#irradiation
#efficiency
1 day ago
0
0
0
[Open Access] Analysis of a second peak of electron density observed in high-power impulse magnetron sputtering plasma using a Langmuir probe 2024 Jpn. J. Appl. Phys. 63 016003
iopscience.iop.org/article/10.3...
#JJAP
#physics
#openaccess
#Langmuir
#probe
#electron
#ionisation
#density
#plasma
1 day ago
0
0
0
[Latest Article: Open Access] High-power oscillations exceeding 1 mW using a single resonant-tunneling diode oscillator in the 0.6–0.7 THz range 2025 Appl. Phys. Express 18 111001
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#Terahertz
#THz
#Resonant
#tunneling
#diode
#RTD
1 day ago
0
0
0
[2025 OPEN ACCESS] 1380 nm VCSELs using surface-activated bonding of GaAs-based DBRs on a Ge substrate 2025 Appl. Phys. Express 18 016507
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#Surface
#bonding
#wavelength
#infrared
#Vertical
#Cavity
#Surface
#Emitting
#Laser
2 days ago
0
0
0
Microgrooves with low-index facets in halide vapor deposited (001) β-Ga2O3: origin of reverse leakage current in Schottky barrier diodes observed by high-sensitive emission microscopy and synchrotron X-ray topography 2024 17 071004
iopscience.iop.org/article/10.3...
#APEX
#Physics
2 days ago
0
0
0
[Open Access] Impact of aluminum concentration variations on the performance of thin barrier enhancement-mode GaN MIS-HEMTs 2025 Jpn. J. Appl. Phys. 64 01SP18
iopscience.iop.org/article/10.3...
#JJAP
#physics
#Openaccess
#AlGaN
#GaN
#HEMT
#ferroelectric
#thin
#barrier
2 days ago
0
0
0
[Open Access] Oxide-semiconductor channel ferroelectric field-effect transistors for high-density memory applications: 3D NAND operation and the potential impact of in-plane polarization 2024 Jpn. J. Appl. Phys. 63 014003
iopscience.iop.org/article/10.3...
#JJAP
#physics
#openaccess
#FET
2 days ago
0
0
0
[Latest Article: Open Access] Fabrication of β-Ga2O3/air-gap structures on (010) β-Ga2O3 by wet etching in tetramethylammonium hydroxide (TMAH) 2025 Appl. Phys. Express 18 116501
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#Ga2O3
#TMAH
#cantilever
#bridge
#etching
#MEMS
3 days ago
0
0
0
[2025 OPEN ACCESS] AlScN/GaN HEMTs with 4 A/mm on-current and maximum oscillation frequency >130 GHz 2025 Appl. Phys. Express 18 016506
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#FET
#Heterostructures
#Ohmic
#Alloys
#Nitrides
#Semiconductors
#Electrical
3 days ago
5
0
0
[2024 OPEN ACCESS] Thermal conductivity of BaZrO3 and KTaO3 single crystals 2024 Appl. Phys. Express 17 071003
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#thermal
#conductivity
#single
#crystal
#perovskite
3 days ago
0
1
0
[Open Access] Hot-wire-type micromachined chemiresistive gas sensors for battery-powered city gas alarms 2025 Jpn. J. Appl. Phys. 64 01SP13
iopscience.iop.org/article/10.3...
#JJAP
#physics
#Openaccess
#Gas
#sensor
#MEMS
#Methane
#oxide
#semiconductor
#SnO2
3 days ago
0
0
0
[Open Access] Simultaneous observation of semi-continuous and Ramsey-coherent population trapping resonances using the Ramsey pulse sequence with drive current modulation 2024 Jpn. J. Appl. Phys. 63 012005
iopscience.iop.org/article/10.3...
#JJAP
#physics
#openaccess
#coherent
#population
#trap
3 days ago
0
0
0
[2025 OPEN ACCESS] Fabrication of GaN vertical junction barrier Schottky diode by Mg diffusion from shallow N/Mg ion-implantation segment 2025 Appl. Phys. Express 18 016505
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#GaN
#Vertical
#doping
#Mg
#ion
#implantation
#diode
#Schottky
4 days ago
0
1
0
[2024 OPEN ACCESS] Electrolyte gating using ionic crystals: demonstration of iontronics with ionic crystals 2024 Appl. Phys. Express 17 071002
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#electrolyte
#ionic
#crystal
#CNT
#graphene
5 days ago
0
2
0
[Open Access] Reflectance spectral studies of spark plasma sintered tungsten carbide pellet 2025 Jpn. J. Appl. Phys. 64 010905
iopscience.iop.org/article/10.3...
#JJAP
#physics
#Openaccess
#solar
#absorber
#thermal
#energy
#reflectance
#plasma
#theory
#calculation
5 days ago
0
0
0
[Spotlights 2024] Near-infrared gas spectroscopy based on plasmonic photodetector applied for multiple gas species 2024 Jpn. J. Appl. Phys. 63 012004
iopscience.iop.org/article/10.3...
#JJAP
#physics
#surface
#plasmon
#resonance
#spectroscopy
#sensing
#Schottky
#infrared
5 days ago
0
0
0
[2025 OPEN ACCESS] 2 kV Al0.64Ga0.36N-channel high electron mobility transistors with passivation and field plates 2025 Appl. Phys. Express 18 016504
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#AlGaN
#HEMT
#Ultrawide
#bandgap
#semiconductor
#transistor
#Power
5 days ago
0
0
0
[2024 OPEN ACCESS] High linearity AlGaN/GaN HEMTs with Au-free Ti/Al/Ni/Ti ohmic contacts for Ka-band applications 2024 Appl. Phys. Express 17 071001
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#GaN
#HEMT
#ohmic
5 days ago
0
0
0
[OPEN ACCESS] Ultra-fast etching of photoresist by reactive atmospheric-pressure thermal plasma jet with surface temperature measurement 2025 Appl. Phys. Express 18 016503
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#Plasma
#Etching
#Temperature
#Measurement
#Organic
#film
#Edge
6 days ago
0
1
0
[OPEN ACCESS] High breakdown voltage of 1.3 kV and low turn-on voltage of 0.48 V β-Ga2O3 heterojunction barrier Schottky diode with tungsten Schottky contact 2024 Appl. Phys. Express 17 066501
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#Ga2O3
#heterojunction
#Schottky
#diode
6 days ago
0
1
0
[2025 OPEN ACCESS] Multi-channel AlN/GaN Schottky barrier diodes 2025 Appl. Phys. Express 18 016502
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#GaN
#Schottky
#Barrier
#Diodes
#channel
#AlN/GaN
#2DEG
7 days ago
0
0
0
[2024 OPEN ACCESS] Epitaxial growth of high-quality Mg3Sb2 thin films on annealed c-plane Al2O3 substrates and their thermoelectric properties 2024 Appl. Phys. Express 17 065501
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#epitaxy
#thermoelectric
#Al2O3
#Zintl
7 days ago
0
0
0
[Open Access] Theoretical study on structural stability and miscibility of ScAlN alloys: effect of lattice constraint 2025 Jpn. J. Appl. Phys. 64 01SP03
iopscience.iop.org/article/10.3...
#JJAP
#physics
#Openaccess
#ScAlN
#structure
#stability
#density
#function
#calculation
8 days ago
0
1
0
[Progress Review 2024 Open Access] Thermoelectric cloths using carbon nanotube yarn for wearable electronics 2024 Jpn. J. Appl. Phys. 63 010803
iopscience.iop.org/article/10.3...
#JJAP
#physics
#Openaccess
#thermoelectric
#generator
#cloth
#carbon
#nanotube
#yarn
#protein
8 days ago
0
0
0
[Review] Advancements in power device technologies to meet the demands of power electronics applications 2025 Appl. Phys. Express 18 110102
iopscience.iop.org/article/10.3...
APEX-NEXT (Noteworthy Excellent Topics)
iopscience.iop.org/collections/...
#APEX
#OpenAccess
#Review
#Physics
#GaN
#MOSFET
8 days ago
0
0
0
[2024 OPEN ACCESS] Drag of electron–hole bilayer in silicon-on-insulator metal-oxide-semiconductor field-effect transistor at low temperature 2024 Appl. Phys. Express 17 064003
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#electron
#silicon
#MOSFET
#oxide
8 days ago
0
0
0
[INVITED REVIEW : FREE ARTICLE] Recent developments on plasma based neutron sources from microscopic innovations to meter-scale applications 2025 Jpn. J. Appl. Phys. 64 010002
iopscience.iop.org/article/10.3...
#JJAP
#Physics
#review
#laser
#neutron
#spherical
#tokamaks
#microreactors
#beamline
9 days ago
0
2
0
[Open Access] Evaluation of electron–phonon coupling strength and average phonon energy in MoS2 thin film 2024 Jpn. J. Appl. Phys. 63 12SP25
iopscience.iop.org/article/10.3...
#JJAP
#physics
#Openaccess
#2D
#TMDCs
#MoS2
#phonon
#energy
#electron
#coupling
9 days ago
0
1
0
[2024 OPEN ACCESS] Enhanced field-effect mobility (>250 cm2/V·s) in GaN MOSFETs with deposited gate oxides via mist CVD 2024 Appl. Phys. Express 17 064002
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#GaN
#MOSFET
#oxide
#CVD
9 days ago
0
1
0
[2025 OPEN ACCESS] 3 kV monolithic bidirectional GaN HEMT on sapphire 2025 Appl. Phys. Express 18 016501
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#GaN
#HEMT
#Bidirectional
#Transistor
#Bandga
#Mobility
#Transistor
9 days ago
0
1
0
[Spotlight] An ultrasonic transducer focusing ultrasound into a thin waveguide by two elliptical reflectors 2024 Appl. Phys. Express 17 064001
iopscience.iop.org/article/10.3...
Spotlight
iopscience.iop.org/journal/1882...
#APEX
#Physics
#Openaccess
#ultrasonic
#transducer
#ultrasound
#reflector
10 days ago
0
1
0
[Latest Article] Degradation driven by ambient oxygen and moisture during film preparation of solution-processed PHPS barrier films 2025 Appl. Phys. Express 18 115501
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#perhydropolysilazane
#VUV
#irradiation
#environment
#barrier
#film
10 days ago
0
0
0
[OPEN ACCESS] Enantiospecific mirror-imaged growth in overlayers of enantiopure thiadiazole-[9]helicene on Au(111) without commensurability 2025 Appl. Phys. Express 18 015502
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#Surface
#Chiral
#molecule
#electron
#diffraction
#Epitaxial
11 days ago
0
1
0
[2024 OPEN ACCESS] Enhancement of quantum entanglement between twin beams via a four-wave mixing process with double feedback 2024 Appl. Phys. Express 17 062002
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#quantum
#beam
#optics
#wave
11 days ago
0
0
0
[Open Access] The acoustic parameter by acoustic microscopy reveals the physiological transition of brain immune cells 2025 Jpn. J. Appl. Phys. 64 01SP01
iopscience.iop.org/article/10.3...
#JJAP
#physics
#Openaccess
#microglia
#ultrasound
#acoustic
#impedance
#immune
#memory
11 days ago
0
2
0
[Open Access] WS2-contact resistance reduction to nickel by Al2O3 insertion 2024 Jpn. J. Appl. Phys. 63 12SP23
iopscience.iop.org/article/10.3...
#JJAP
#physics
#Openaccess
#TMDC
#tungsten
#disulfide
#contact
#MIS
11 days ago
0
0
0
[APEX REVIEW : Open Access] Prospects for β-Ga2O3: now and into the future 2024 Appl. Phys. Express 17 090101 Kohei Sasaki, Novel Crystal Technology
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#Review
#Ga2O3
#gallium
#oxide
12 days ago
0
0
0
[2024 OPEN ACCESS] An inverted singlet-triplet excited state in a pentaazaphenalene derivative (5AP-N(C12)2) 2024 Appl. Phys. Express 17 061001
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#OLED
#organic
#fluorescence
#pentaazaphenalene
13 days ago
0
0
0
[APEX REVIEW : Open Access] Fundamentals and recent advances of terahertz resonant tunneling diodes 2024 17 070101 Safumi Suzuki, Masahiro Asada, Tokyo Institute of Technology
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#Review
#terahertz
#resonant
#tunneling
#diode
13 days ago
0
1
0
[2024 OPEN ACCESS] 783 MHz fundamental repetition rate all-fiber ring laser mode-locked by carbon nanotubes 2024 Appl. Phys. Express 17 062001
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#fiber
#laser
#saturable
#absorber
14 days ago
0
1
0
[APEX REVIEW : OPEN ACCESS] Surface and interface physics driven by quantum materials 2024 Appl. Phys. Express 17 050101 Shuji Hasegawa, University of Tokyo
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
#Review
#Surface
#interface
#quantum
#material
14 days ago
0
0
0
[2024 OPEN ACCESS] Response of lettuce seeds undergoing dormancy break and early senescence to plasma irradiation 2024 Appl. Phys. Express 17 057001
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#plasma
#agriculture
#DBD
#ESR
15 days ago
0
1
1
[OPEN ACCESS] Surface patterning of wide-gap semiconducting β-Ga2O3 thin films by area selective crystallization via room-temperature excimer laser annealing and low-toxic wet etching processes 2025 Appl. Phys. Express 18 015501
iopscience.iop.org/article/10.3...
#APEX
#OpenAccess
#Physics
15 days ago
0
1
1
[2024 OPEN ACCESS] Fabrication of free-standing GaN substrates using electrochemically formed porous separation layers 2024 Appl. Phys. Express 17 055502
iopscience.iop.org/article/10.3...
#APEX
#Physics
#Openaccess
#GaN
#porous
#electrochemical
#HVPE
15 days ago
0
0
0
[Open Access] Observation of point defect and carrier lifetime distributions in hydrogen or helium ion implanted SiC PiN diodes for suppression of bipolar degradation 2025 Jpn. J. Appl. Phys. 64 010901
iopscience.iop.org/article/10.3...
#JJAP
#physics
#Openaccess
#SiC
#ion
#implantation
#bipolar
15 days ago
0
0
0
[Open Access] Enhanced photovoltaic performance and longevity of perovskite modules via interface engineering of transport layer 2024 Jpn. J. Appl. Phys. 63 12SP20
iopscience.iop.org/article/10.3...
#JJAP
#physics
#Openaccess
#interface
#engineering
#longevity
#solar
#module
#perovskite
15 days ago
0
1
0
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