Kiichi Niitsu 研究室

主宰者：Kiichi Niitsu

京都大学

AI 要約（直近 5 年の研究成果）

Kiichi Niitsu研究室では、超低消費電力・超小型集積回路（IC）の設計と、その医療・IoT応用に関する研究を進めています。特に、電池交換が困難な体内埋込センサーや経口医療用デバイスなど、極めて限定された電源環境でのシステム動作を実現する回路技術に取り組んでいます。そのため、数ピコワット（10^-12W）以下の消費電力での動作や、100mV以下の極低電圧での信号処理を可能にする設計手法を開発しています。回路設計の手法としては、電圧スタッキングや自動発振型昇圧回路といった省電力技術、および供給電圧の変化に応じて動作を制御する新しい論理素子構成を採用しています。また、プロセス製造時の微細な特性ばらつきを積極的に活用し、各チップ固有の暗号鍵を生成するセキュリティデバイス（PUF）の開発にも力を入れており、ホットキャリア注入などの物理現象を利用して動作の安定性を向上させています。これらの技術をもとに、血糖値を非侵襲的に測定するウェアラブルデバイスやインプラント型バイオセンサー、経口型の診断用タブレットなど、実際の医療現場での応用を想定したシステム設計と検証を行っています。加えて、乱数生成やストキャスティックコンピューティングなど、セキュリティ・信号処理・機械学習といった幅広い領域で活用可能な基礎回路の研究開発も進めています。

※ AI（Claude）が、公開されている論文要旨から研究の問い・手法・主要な発見を事実情報として抽出・再構成して自動生成しています。誤りを含む可能性があるため、正確性は研究室公式情報でご確認ください。

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研究成果（49 件）

[2026] A Physically Unclonable Function With Less Than 4.16E–7 BER Featuring Secure In-Cell HCI Burn-In and nMOS-Dominant PUF Data Generation
DOI: https://doi.org/10.1109/jssc.2026.3663657
[2026] A Sub-Threshold All-NMOS Reconfigurable PUF with Secure Configuration Selection for Stable 6b/Cell
DOI: https://doi.org/10.1109/isscc49663.2026.11409111
[2025] Statistical Model and Transistor Size Effect of Hot Carrier Injection for Stability Reinforced SRAM Physically Unclonable Function
DOI: https://doi.org/10.1109/tdmr.2025.3574796
[2025] A 22 nm CMOS 0.034 mm2 0.4 V 1.3 nW Frequency-Recording IC with 400-Bit Data-Storing Shift Registers Using Burst-Pulse Counting and Reference Pulse Generation for Stand-Alone Continuous Glucose Monitoring Contact Lenses
DOI: https://doi.org/10.1109/lascas64004.2025.10966300
[2025] Multipath Signal-Selective Metasurface: Passive Time-Varying Interlocking Mechanism to Vary Spatial Impedance for Signals with the Same Frequency
DOI: https://doi.org/10.1103/physrevlett.134.157001
[2025] Design of 0.9-2.6pW 0.1-0.25V 22nm 2-bit Supply-to-Digital Converter Using Always-Activated Supply-Controlled Oscillator and Supply-Dependent-Activation Buffers for Bio-Fuel-Cell-Powered-and-Sensed Time-Stamped Bio-Recording
DOI: https://doi.org/10.1145/3658617.3698492
[2025] Examination of the Communication Environment When Applying Removable Dentures as Wearable Devices
DOI: https://doi.org/10.7759/cureus.97531
[2025] A 22nm CMOS 0.017mm 2 0.9V 0.26nW-Standby-Power 2.7mW-Peak-Power 37GHz Biocompatibly-Covered Ingestible OOK Transmitter Enabling 1cm Communication Via Simulated Large Intestine Model for Digital Pills
DOI: https://doi.org/10.1109/icecs66544.2025.11270639
[2025] A Less than 6.5E-8 BER 36-Way Reconfigurable PUF with 4-bit Stable Responses per Cell Featuring Machine Learning-Based Best-Configuration Selection
DOI: https://doi.org/10.1109/a-sscc67472.2025.11349388
[2025] Entropy Improvement in Latch-Based True Random Number Generator Using Negative Bias Temperature Instability
DOI: https://doi.org/10.1109/tcsi.2025.3621604

続きを表示（残り 39 件）

[2025] Design and Experimental Verification of A 0.14-0.55V 1.9-24.2pW 22nm 3-bit Binary Search Supply-to-Digital Converter Using One-Hot Hard-Wired Topology and Supply-Dependent-Activation Buffers for Supply Sensing IoT Systems
DOI: https://doi.org/10.1109/norcas66540.2025.11231272
[2025] A 1.4-V 260-pW 1-mm 2 65-nm CMOS Temperature/pH Sensing IC Featuring Voltage-Stacking Timer and Wireless Transmitter for Stomach-Acid-Charged Tablet-Type Digital Pills with Long-Term In-Body Monitoring
DOI: https://doi.org/10.1109/norcas66540.2025.11231276
[2025] A 65nm 0.0736mm 2 /Pixel Simultaneous Energy-Harvesting-and-Sensing 2-by-2 Self-Powered CMOS Image Sensor Pixel Array Using Self-Oscillating Voltage Doubler for Thermal-Aware Zero-Stand-by-Power Imaging
DOI: https://doi.org/10.1109/apccas67402.2025.11377210
[2025] Platinum nanoparticle-decorated carbon nanowall anodes fabricated via top-down approach for abiotic glucose fuel cells
DOI: https://doi.org/10.1038/s41598-025-17364-9
[2025] Design and Experimental Verification of 0.9-2.6pW 0.1-0.25V 22nm 2-Bit Supply-to-Digital Converter Using Always-Activated Supply-Controlled Oscillator and Supply-Dependent-Activation Buffers for Bio-Fuel-Cell-Powered-and-Sensed Time-Stamped Bio-Recording
DOI: https://doi.org/10.1109/tcsii.2025.3590168
[2025] A $110-\text{mV} 12-\text{pW} 0.00006-\text{mm}^{2} 7-\text{nm}$ FinFET Self-Oscillating Voltage Doubler Using Vertically Implemented Back-End Metal-Oxide-Metal Capacitors for Small-Formfactor Up-Conversion
DOI: https://doi.org/10.1109/mwscas53549.2025.11244542
[2025] A 65-nm CMOS Downconverter-Less Clock Generator Architecture Using Voltage Stacking of Oscillator and Frequency Dividers for Scaling-Friendly IoTs
DOI: https://doi.org/10.1109/tvlsi.2025.3583337
[2024] A 0.9-2.6pW 0.1-0.25V 22nm 2-bit Supply-to-Digital Converter Using Always-Activated Supply-Controlled Oscillator and Supply-Dependent-Activation Buffers for Bio-Fuel-Cell-Powered-and-Sensed Time-Stamped Bio-Recording
DOI: https://doi.org/10.1109/vlsitechnologyandcir46783.2024.10631372
[2024] A 0.04 mm2 22nm CMOS Fully-Integrated Supply-Modulated OOK Transmitter Using Self-Oscillating Voltage Doubler, Charge Pump, and Voltage Detector
DOI: https://doi.org/10.1109/icecs61496.2024.10848616
[2024] A 0.00027 mm2 1.2V 0.089pJ/bit 10Gbps 41.6 GHz Standard-Cell-Based Passive-Less Wireless OOK Transmitter with On-Chip Antenna in 12nm FinFET
DOI: https://doi.org/10.1109/norcas64408.2024.10752439
[2024] A 2 Hz, 1.2-2 V, 0.22-9 nW, 0.007 mm2 65 nm CMOS Multiple- Output Down-Converter-Less Clock Generator Using Stacked an Oscillator and Frequency Dividers for Scaling-Friendly IoTs
DOI: https://doi.org/10.1109/norcas64408.2024.10752488
[2024] De-Correlation and De-Bias Post-Processing Circuits for True Random Number Generator
DOI: https://doi.org/10.1109/tcsi.2024.3421663
[2024] A 115mV 300fW 0.24Hz 0.00012 $\text{mm}^{2}$ Schmitt-Trigger Ring Oscillator Using Dynamic Leakage Suppression with Cold Start Capability in 22nm CMOS
DOI: https://doi.org/10.1109/icecs61496.2024.10848622
[2024] A Latch-Based Stochastic Number Generator for Stochastic Computing of Extended Naïve Bayesian Network
DOI: https://doi.org/10.1109/vlsitsa60681.2024.10546408
[2024] A 65-nm CMOS Millimeter-Wave Ear-Worn Non-Invasive Continuous Glucose Monitoring Chipset Using a 0.17mm2 72mW Transmitter and a 0.75mm2 80mW Direct-Conversion Receiver
DOI: https://doi.org/10.1109/lascas60203.2024.10506119
[2023] A Continuous Multiple-Timestep Blood Glucose Level Prediction System Using Stacked LSTM for High-Accuracy Hypoglycemia Alerts in Smart Contact Lenses
DOI: https://doi.org/10.1109/ieeeconf58974.2023.10405113
[2023] A 0.063-mm2 1.75-nW Biofuel Cell-Input Biosensing/Data-Storing System with 5.5-GHz Wireless Backscatter Data-Readout in 65-nm CMOS for Self-Powered Smart Contact Lenses
DOI: https://doi.org/10.1109/biocas58349.2023.10388802
[2023] A Battery-Less 0.37 V 126 nW 0.29 mm2 65-nm CMOS Biofuel-Cell-Modulated Biosensing System Featuring an FSK-PIM-Combined 2.4 GHz Transmitter for Continuous Glucose Monitoring Contact Lenses
DOI: https://doi.org/10.1109/iscas46773.2023.10182119
[2023] A 351pW Stand-By Power 0.017mm2 37.4GHz Fully-Integrated LC Oscillator-Based OOK Transmitter Using Low-Leakage Switch in 22nm CMOS
DOI: https://doi.org/10.7567/ssdm.2023.j-3-01
[2023] Design and analysis for the SPICE parameters of waveform-selective metasurfaces varying with the incident pulse width at a constant oscillation frequency
DOI: https://doi.org/10.1038/s41598-023-34112-z
[2022] Design and Experimental Verification of a 2.1nW 0.018mm2 Slope ADC-Based Supply Voltage Monitor for Biofuel-Cell-Powered Supply-Sensing Systems in 180-nm CMOS
DOI: https://doi.org/10.1587/transele.2021cts0001
[2022] A 52.3% Peak Efficiency 22nm CMOS Low-Power Light-Adaptive Self-Oscillating Voltage Doubler Using Scalable Dynamic Leakage-Suppression Logic
DOI: https://doi.org/10.1109/lascas53948.2022.9789056
[2022] 22nm CMOS pW Standby Power Flip-Flops with/without Security using Dynamic Leakage Suppression Logic
DOI: https://doi.org/10.1109/lascas53948.2022.9789041
[2022] An Ultra-Low Power 22 nm Self-Oscillating Voltage Doubler With Dynamic Leakage-Suppression Logic
DOI: https://doi.org/10.1109/lascas53948.2022.9789081
[2022] A 0.5 mm2Ambient Light-Driven Solar Cell-Powered Biofuel Cell-Input Biosensing System with LED Driving for Stand-Alone RF-Less Continuous Glucose Monitoring Contact Lens
DOI: https://doi.org/10.1109/asp-dac52403.2022.9712523
[2022] A 0.5-mm2 Solar Cell-Powered Biofuel Cell-Input Biosensing System With LED Driving for Stand-Alone RF-Less Continuous Glucose Monitoring Contact Lens
DOI: https://doi.org/10.1109/lssc.2022.3151904
[2022] A Solar-Cell-Assisted, 99% Biofuel Cell Area Reduced, Biofuel-Cell-Powered Wireless Biosensing System in 65nm CMOS for Continuous Glucose Monitoring Contact Lenses
DOI: https://doi.org/10.1587/transele.2021cds0002
[2022] A 22nm CMOS 1.25V 29pW 0.000013 mm2 Supply Voltage Detector Using Stacked 3 Thick-Gate-Oxide PMOSs and Dynamic Leakage Suppression Buffer
DOI: https://doi.org/10.7567/ssdm.2022.k-2-02
[2022] A 0.00023 mm² 1.2V 0.48mW 18GHz Passive-Less Digital Wireless Transmitter with On-Chip Antenna in 22nm Bulk CMOS
DOI: https://doi.org/10.1109/mwscas54063.2022.9859365
[2022] A 4.8-mW Label-free Frequency-shift 3×3×2 3D Biosensor Array with Vertically-stacked 60-GHz LC Oscillators in 22-nm CMOS
DOI: https://doi.org/10.1109/mwscas54063.2022.9859351
[2022] A 4.5-mW 22-nm CMOS Label-Free Frequency-Shift 3 × 3 × 2 3-D Biosensor Array Using Vertically Stacked 60-GHz LC Oscillators
DOI: https://doi.org/10.1109/tcsii.2022.3185542
[2021] A 0.5 mm2 0.31 V/0.39 V 28 nW/144 nW 65 nm CMOS Solar Cell-Powered Biofuel Cell-Input Biosensing System with PIM/PDM LED Driving for Stand-Alone RF-Less Continuous Glucose Monitoring Contact Lens
DOI: https://doi.org/10.1109/essderc53440.2021.9631770
[2021] High electrical conductivity and oxidation reduction reaction activity of tungsten carbide/carbon nanocomposite synthesized from palm oil by solution plasma process
DOI: https://doi.org/10.1166/mex.2021.2035
[2021] A 4.8mW 22nm CMOS Fully-Integrated 60-GHz $3\times 3\times 2$ 3D Frequency-Shift Biosensor Array Using Vertically-Stacked LC Oscillators
DOI: https://doi.org/10.1109/icecs53924.2021.9665493
[2021] A 65-nm CMOS 0.4 V 49.6 nW Voltage Monitor for Small-Form-Factor Biomedical IoT Applications
DOI: https://doi.org/10.1109/primeasia51450.2021.9701468
[2021] A 0.2V 0.97nW 0.011mm2 Fully-Passive mHBC Tag Using Intermediate Interference Modulation in 65nm CMOS
DOI: https://doi.org/10.1109/icecs53924.2021.9665542
[2021] A 22nm CMOS 0.2V 13.3nW 16T SRAM Using Dynamic Leakage Suppression and Half-Selected Free Technique
DOI: https://doi.org/10.1109/apccas51387.2021.9687693
[2021] A 0.5 mm2 0.31 V/0.39 V 28 nW/144 nW 65 nm CMOS Solar Cell-Powered Biofuel Cell-Input Biosensing System with PIM/PDM LED Driving for Stand-Alone RF-Less Continuous Glucose Monitoring Contact Lens
DOI: https://doi.org/10.1109/esscirc53450.2021.9567771
[2021] Structure and properties of nanocarbons-encapsulated WC synthesized by solution plasma process in palm oils
DOI: https://doi.org/10.1166/mex.2021.2034

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AI 要約（直近 5 年の研究成果）

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関連研究室(8 件)

研究成果（49 件）

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