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| 1 | Non-destructive thickness characterisation of 3D multilayer semiconductor devices using optical spectral measurements and machine learning显示文摘Three-dimensional(3D)semiconductor devices can address the limitations of traditional two-dimensional(2D)devices by expanding the integration space in the vertical direction.A 3D NOT-AND(NAND)flash memory device is presently the most commercially successful 3D semiconductor device.It vertically stacks more than 100 semiconductor material layers to provide more storage capacity and better energy efficiency than 2D NAND flash memory devices.In the manufacturing of 3D NAND,accurate characterisation of layer-by-layer thickness is critical to prevent the production of defective devices due to non-uniformly deposited layers.To date,electron microscopes have been used in production facilities to characterise multilayer semiconductor devices by imaging cross-sections of samples.However,this approach is not suitable for total inspection because of the wafer-cutting procedure.Here,we propose a non-destructive method for thickness characterisation of multilayer semiconductor devices using optical spectral measurements and machine learning.For>200-layer oxide/nitride multilayer stacks,we show that each layer thickness can be non-destructively determined with an average of approximately 1.6Åroot-mean-square error.We also develop outlier detection models that can correctly classify normal and outlier devices.This is an important step towards the total inspection of ultra-high-density 3D NAND flash memory devices.It is expected to have a significant impact on the manufacturing of various multilayer and 3D devices. | Hyunsoo Kwak Sungyoon Ryu Suil Cho Junmo Kim Yusin Yang Jungwon Kim | 2021 | Light(Advanced Manufacturing)2021，2，1： | 4 |
| 2 | High reso- lution Electron Microscopy on Thin Sections of Monodis- perse CdS Particles显示文摘 | Yang Junmo Shindo Daisuke Dirige G E | 1996 | Journal of Colliod and Interface Science1996，183，1： | 1 |
| 3 | High-resolution electron microscopy on thin sections of monodisperse CdS particles显示文摘 | YANG Junmo SHINDO Daisuke DIRIGE E Grace | 1996 | Journal of Colliod and Interface Science1996，，183： | 1 |
| 4 | Highly Stable Nonhydroxyl Antisolvent Polymer Dielectric:A New Strategy towards High-Performance Low-Temperature Solution-Processed Ultraflexible Organic Transistors for Skin-Inspired Electronics显示文摘Scarcity of the antisolvent polymer dielectrics and their poor stability have significantly prevented solution-processed ultraflexible organic transistors from low-temperature,large-scale production for applications in low-cost skin-inspired electronics.Here,we present a novel low-temperature solution-processed PEI-EP polymer dielectric with dramatically enhanced thermal stability,humidity stability,and frequency stability compared with the conventional PVA/c-PVA and c-PVP dielectrics,by incorporating polyethyleneimine PEI as crosslinking sites in nonhydroxyl epoxy EP.The PEI-EP dielectric requires a very low process temperature as low as 70℃ and simultaneously possesses the high initial decomposition temperature(340℃)and glass transition temperature(230℃),humidity-resistant dielectric properties,and frequency-independent capacitance.Integrated into the solution-processed C8-BTBT thin-film transistors,the PEI-EP dielectric enables the device stable operation in air within 2 months and in high-humidity environment from 20 to 100%without significant performance degradation.The PEI-EP dielectric transistor array also presents weak hysteresis transfer characteristics,excellent electrical performance with 100%operation rate,high mobility up to 7.98 cm^(2)V^(-1)s^(-1)(1 Hz)and average mobility as high as 5.3 cm^(2)V^(-1)s^(-1)(1 Hz),excellent flexibility with the normal operation at the bending radius down to 0.003 mm,and foldable and crumpling-resistant capability.These results reveal the great potential of PEI-EP polymer as dielectric of low-temperature solution-processed ultraflexible organic transistors and open a new strategy for the development and applications of next-generation low-cost skin electronics. | Mingxin Zhang Cong Zhang Yahan Yang Hang Ren Junmo Zhang Xiaoli Zhao Yanhong Tong Qingxin Tang Yichun Liu | 2021 | Research2021，，1： | 0 |
| 5 | Highly Stable Nonhydroxyl Antisolvent Polymer Dielectric: A New Strategy towards High-Performance Low-Temperature Solution-Processed Ultraflexible Organic Transistors for Skin-Inspired Electronics显示文摘Scarcity of the antisolvent polymer dielectrics and their poor stability have significantly prevented solution-processed ultraflexible organic transistors from low-temperature,large-scale production for applications in low-cost skin-inspired electronics.Here,we present a novel low-temperature solution-processed PEI-EP polymer dielectric with dramatically enhanced thermal stability,humidity stability,and frequency stability compared with the conventional PVA/c-PVA and c-PVP dielectrics,by incorporating polyethyleneimine PEI as crosslinking sites in nonhydroxyl epoxy EP.The PEI-EP dielectric requires a very low process temperature as low as 70℃ and simultaneously possesses the high initial decomposition temperature(340℃)and glass transition temperature(230℃),humidity-resistant dielectric properties,and frequency-independent capacitance.Integrated into the solution-processed C8-BTBT thin-film transistors,the PEI-EP dielectric enables the device stable operation in air within 2 months and in high-humidity environment from 20 to 100%without significant performance degradation.The PEI-EP dielectric transistor array also presents weak hysteresis transfer characteristics,excellent electrical performance with 100%operation rate,high mobility up to 7.98 cm^(2)V^(-1) s^(-1)(1 Hz)and average mobility as high as 5.3 cm^(2)V^(-1) s^(-1)(1 Hz),excellent flexibility with the normal operation at the bending radius down to 0.003 mm,and foldable and crumpling-resistant capability.These results reveal the great potential of PEI-EP polymer as dielectric of low-temperature solution-processed ultraflexible organic transistors and open a new strategy for the development and applications of next-generation low-cost skin electronics. | Mingxin Zhang Cong Zhang Yahan Yang Hang Ren Junmo Zhang Xiaoli Zhao Yanhong Tong Qingxin Tang Yichun Liu | 2022 | Research2022，，1： | 0 |
| 6 | Current state of stem cell research in non-human primates:an overview显示文摘The remarkable similarity between non-human primates(NHPs)and humans establishes them as essential models for understanding human biology and diseases,as well as for developing novel therapeutic strategies,thereby providing more comprehensive reference data for clinical treatment.Pluripotent stem cells such as embryonic stem cells and induced pluripotent stem cells provide unprecedented opportunities for cell therapies against intractable diseases and injuries.As continue to harness the potential of these biotechnological therapies,NHPs are increasingly being employed in preclinical trials,serving as a pivotal tool to evaluate the safety and efficacy of these interventions.Here,we review the recent advancements in the fundamental research of stem cells and the progress made in studies involving NHPs. | Junmo Wu Yuxi Shi Shanshan Yang Zengli Tang Zifan Li Zhuoyao Li Jiawei Zuo Weizhi Ji Yuyu Niu | 2023 | Medical Review2023，3，4： | 0 |
| 7 | Long-term in vivo chimeric cells tracking in non-human primate显示文摘Non-human primates(NHPs)are increasingly used in preclinical trials to test the safety and efficacy of biotech-nology therapies.Nonetheless,given the ethical issues and costs associated with this model,it would be highly advantageous to use NHP cellular models in clinical studies.However,developing and maintaining the naive state of primate pluripotent stem cells(PSCs)remains difficult as does in vivo detection of PSCs,thus limiting biotech-nology application in the cynomolgus monkey.Here,we report a chemically defined,xeno-free culture system for culturing and deriving monkey PSCs in vitro.The cells display global gene expression and genome-wide hypometh-ylation patterns distinct from monkey-primed cells.We also found expression of signaling pathways components that may increase the potential for chimera formation.Crucially for biomedical applications,we were also able to integrate bioluminescent reporter genes into monkey PsCs and track them in chimeric embryos in vivo and in vitro.The engineered cells retained embryonic and extra-embryonic developmental potential.Meanwhile,we generated a chimeric monkey carrying bioluminescent cells,which were able to track chimeric cells for more than 2 years in living animals.Our study could have broad utility in primate stem cell engineering and in utilizing chimeric monkey models forclinical studies. | Junmo Wu Yu Kang Xiang Luo Shaoxing Dai Yuxi Shi Zhuoyao Li Zengli Tang Zhenzhen Chen Ran Zhu Pengpeng Yang Zifan Li Hong Wang Xinglong Chen Ziyi Zhao Weizhi ji Yuyu Niu | 2024 | Protein & Cell2024，15，3： | 0 |
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