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Advances in Patterning Materials and Processes XLI 2024

作者： Le, Dan N. Chu, Thi Thu Huong Kim, Jin-Hyun Veyan, Jean-Francois Lee, Won-Il Tiwale, Nikhil Lee, Minjong Choi, Seungsoo Woo, Jihoon Nam, Chang-Yong Choi, Rino Kim, Jiyoung Department of Materials Science and Engineering University of Texas at Dallas RichardsonTX75080 United States Department of Materials Science and Chemical Engineering Stony Brook University Stony BrookNY11794 United States Center for Functional Nanomaterials Brookhaven National Laboratory UptonNY11973 United States Department of Electrical and Computer Engineering University of Texas at Dallas RichardsonTX75080 United States Program in Enviromental and Polymer Engineering Inha University Incheon22212 Korea Republic of Department of Materials Science and Engineering Inha University Incheon22212 Korea Republic of

ISBN: (纸本)9781510672208

In this study, we focus on examining the stability of Al-based inorganic-organic hybrid thin films deposited through the molecular atomic layer deposition (MALD) process in ambient environment. Our observations reveal an initial reduction in material thickness within the first 3 days, followed by a period of stability. XPS analysis is employed to further investigate the chemical alternations in the aged Al-based hybrid thin films, revealing an increase in C=O species as well as overall oxygen content in the material. We also evaluate the effects of atmospheric exposure on the sensitivity of the Al-based hybrid thin films using electron flood exposure. This study aims to enhance the understanding of the stability of a vapor-phase synthesized hybrid thin film system for advanced resist applications. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Atomic layer deposition

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Integrated Optoelectronic Memory Array with Enhanced Broadband Si-based Lines for Advanced Visual Systems

Integrated Optoelectronic Memory Array with Enhanced Broadba...

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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Wang, Jinyong Ren, Yujing Tang, Baoshan Li, Changcun Liu, Fucai Gu, Deen School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China Chengdu611731 China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu611731 China Department of Electrical and Computer Engineering National University of Singapore Singapore117583 Singapore Department of Chemical and Biomolecular Engineering National University of Singapore Singapore117583 Singapore

ISBN: (纸本)9781957171258

We present an innovative approach to optoelectronic memory that utilizes enhanced Si-based broadband lines integrated into an array to achieve stable synaptic functions, optical states and high recognition accuracy (99.64%) under near-infrared regions, paving the way for high-performance robot vision systems with advanced memory capabilities. © 2023 The Author(s)

关键词： Infrared devices

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Zwitterionic peptides:Tunable next-generation stealth nanoparticle modifications

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Bioactive Materials 2023年第9期27卷 113-124页

作者： Clyde Overby Soomin Park Austin Summers Danielle S.W.Benoit Department of Biomedical Engineering University of Rochester RochesterNYUSA Center for Musculoskeletal Research University of RochesterRochesterNYUSA Department of Biology University of Rochester RochesterNYUSA Department of Biology Duquesne UniversityPAUSA Department of Chemical Engineering University of RochesterRochesterNYUSA Materials Science Program University of RochesterRochesterNYUSA Knight Campus for Accelerating Scientific Impact Department of BioengineeringUniversity of OregonEugeneORUSA

Adsorption of proteins to nanoparticles(NPs),a complex process that results in a protein corona,is controlled by NP surface properties that define NP interactions in *** to control adsorbed protein quantity through surface modification have led to improvements in circulation time or ***,current approaches have yet to be identified to control adsorbed protein identities within the ***,we report the development and characterization of diverse zwitterionic peptides(ZIPs)for NP anti-fouling surface functionalization with specific and controllable affinity for protein adsorption profiles defined by ZIP *** serum exposure of ZIP-conjugated NPs and proteomics analysis of the resulting corona,we determined that protein adsorption profiles depend not on the exact composition of the ZIPs but on the sequence and order of charges along the sequence(charge motif).These findings pave the way for developing tunable ZIPs to orchestrate specific ZIP-NP protein adsorption profiles as a function of ZIP charge motif to better control cell and tissue specificity and pharmacokinetics and provide new tools for investigating relationships between protein corona and biological ***,overall ZIP diversity enabled by the diversity of amino acids may ameliorate adaptive immune responses.

关键词： Nanoparticles Protein corona Surface functionalization Peptide design Cellular uptake

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Optimal Design of Control-Lyapunov Functions by Semi-Infinite Stochastic programming

Optimal Design of Control-Lyapunov Functions by Semi-Infinit...

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IEEE Conference on Decision and Control

作者： Wentao Tang Prodromos Daoutidis Department of Chemical and Biomolecular Engineering North Carolina State University Raleigh NC Department of Chemical Engineering and Materials Science College of Science and Engineering University of Minnesota Minneapolis MN USA

Lyapunov-based control is a common method to enforce closed-loop stability of nonlinear systems, where the choice of a control-Lyapunov function has a strong impact on the resulting performance. In this paper, we propose a generic semi-infinite stochastic programming formulation for the optimal control-Lyapunov function design problem and discuss its various specializations. Specifically, the expected performance evaluated on simulated trajectories under different scenarios is optimized subject to infinite constraints on stability and performance specifications. A stochastic proximal primal-dual algorithm is introduced to find a stationary solution of such a semi-infinite stochastic programming problem. The proposed method is illustrated by a chemical reactor case study.

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Effects of Flexible Conjugation-Break Spacers of Non-Conjugated Polymer Acceptors on Photovoltaic and Mechanical Properties of All-Polymer Solar Cells

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Nano-Micro Letters 2022年第10期14卷 164-177页

作者： Qiaonan Chen Yung Hee Han Leandro R.Franco Cleber F.N.Marchiori Zewdneh Genene CMoyses Araujo Jin-Woo Lee Tan Ngoc-Lan Phan Jingnan Wu Donghong Yu Dong Jun Kim Taek-Soo Kim Lintao Hou Bumjoon J.Kim Ergang Wang Siyuan Laboratory Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy MaterialsDepartment of PhysicsJinan UniversityGuangzhou 510632People’s Republic of China Department of Chemistry and Chemical Engineering Chalmers University of TechnologySE-41296GöteborgSweden Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Department of Engineering and Physics Karlstad University65188 KarlstadSweden Department of Chemistry and Bioscience Aalborg University9220 AalborgDenmark Department of Mechanical Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Materials Theory Division Department of Physics and AstronomyUppsala University75120 UppsalaSweden Sino-Danish Center for Education and Research 8000 AarhusDenmark School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001People’s Republic of China

All-polymer solar cells(all-PSCs)possess attractive merits including superior thermal stability and mechanical flexibility for large-area roll-to-roll *** flexible conjugation-break spacers(FCBSs)into backbones of polymer donor(P_(D))or polymer acceptor(P_(A))has been demonstrated as an efficient approach to enhance both the photovoltaic(PV)and mechanical properties of the ***,length dependency of FCBS on certain all-PSC related properties has not been systematically *** this regard,we report a series of new non-conjugated P_(A)s by incorporating FCBS with various lengths(2,4,and 8 carbon atoms in thioalkyl segments).Unlike com-mon studies on so-called side-chain engineering,where longer side chains would lead to better solubility of those resulting polymers,in this work,we observe that the solubilities and the resulting photovoltaic/mechanical properties are optimized by a proper FCBS length(i.e.,C2)in P_(A) named *** all-PSC achieves a high efficiency of 11.37%,and excellent mechanical robustness with a crack onset strain of 12.39%,significantly superior to those of the other P_(A)*** results firstly demonstrate the effects of FCBS lengths on the PV performance and mechanical properties of the all-PSCs,providing an effective strategy to fine-tune the structures of P_(A)s for highly efficient and mechanically robust PSCs.

关键词： All-polymer solar cells Flexible conjugation-break spacers Mechanical robustness Polymer acceptors Stretchability

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Nickel promotes selective ethylene epoxidation on silver

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science (New York, N.Y.) 2025年第6736期387卷 869-873页

作者： Jalil, Anika Happel, Elizabeth E. Cramer, Laura Hunt, Adrian Hoffman, Adam S. Waluyo, Iradwikanari Montemore, Matthew M. Christopher, Phillip Sykes, E Charles H Department of Chemical Engineering University of California Santa Barbara CA USA Department of Chemistry Tufts University Medford MA United States National Synchrotron Light Source II Brookhaven National Laboratory Upton NY United States Stanford Synchrotron Radiation Light Source SLAC National Accelerator Laboratory Menlo Park CA United States SUNCAT Center for Interfacial Science and Catalysis SLAC National Accelerator Laboratory Menlo Park CA United States Department of Chemical and Biomolecular Engineering Tulane University New Orleans LA United States Department of Chemical and Biological Engineering Tufts University Medford MA United States

Over the last 80 years, chlorine (Cl) has been the primary promoter of the ethylene epoxidation reaction valued at ~40 billion USD per year, providing a ~25% selectivity increase over unpromoted silver (Ag) (~55%). Promoters such as cesium, rhenium, and molybdenum each add a few percent of selectivity enhancements to achieve 90% overall, but their codependence on Cl makes optimizing and understanding their function complex. We took a theory-guided, single-atom alloy approach to identify nickel (Ni) as a dopant in Ag that can facilitate selective oxidation by activating molecular oxygen (O2) without binding oxygen (O) too strongly. Surface science experiments confirmed the facile adsorption/desorption of O2 on NiAg, as well as demonstrating that Ni serves to stabilize unselective nucleophilic oxygen. Supported Ag catalyst studies revealed that the addition of Ni in a 1:200 Ni to Ag atomic ratio provides a ~25% selectivity increase without the need for Cl co-flow and acts cooperatively with Cl, resulting in a further 10% initial increase in selectivity.

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Selection of Fe as a barrier for manufacturing low-cost MgB2 multifilament wires-Advanced microscopy study between Fe and B reaction

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Journal of Magnesium and Alloys 2024年第7期12卷 2783-2792页

作者： Hao Liang Dipak Patel Ziming Wang Akiyoshi Matsumoto Matt Rindfleisch Micheal Tomsic Richard Taylor Fang Liu Yusuke Yamauchi Md.Shahriar A Hossain School of Mechanical and Mining Engineering The University of QueenslandSt LuciaQueensland 4072Australia The Commonwealth Scientific and Industrial Research Organisation(CSIRO) LindfieldNew South Wales 2070Australia University of Science and Technology of China Hefei 230026China Hefei Institutes of Physical Science Chinese Academy of SciencesHefei 230031China National Institute for Materials Science(NIMS) 1-2-1 SengenTsukubaIbaraki 305-0047Japan Hyper Tech Research Inc.539 Industrial Mile RdColumbusOH 43228USA Applied Superconductivity Laboratory Queensland University of TechnologyBrisbaneQueensland 4001Australia Institute of Energy Hefei Comprehensive National Science CenterHefei 230031China Department of Materials Process Engineering Graduate School of EngineeringNagoya UniversityNagoya 464-8603Japan Australian Institute for Bioengineering and Nanotechnology(AIBN) The University of QueenslandSt LuciaQueensland 4072Australia Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei-roSeodaemun-guSeoul 03722South Korea

The high cost of using the niobium(Nb)barrier for manufacturing magnesium diboride(MgB2)mono-and multi-filamentary wires for large-scale applications has become one of the barriers to replacing current commercial niobium-titanium *** potential of replacing the Nb barrier with a low-cost iron(Fe)barrier for multifilament MgB2 superconducting wires is investigated in this ***,MgB2 wires with Fe barrier sintered with different temperatures are studied(from 650°C to 900°C for 1 h)to investigate the non-superconducting reaction phase of *** superconducting performance including engineering critical current density(Je)and n-value are tested at 4.2 K in various external magnetic *** best sample sintered at 650°C for 1 h has achieved a Je value of 3.64×10^(4) A cm^(−2) and an n-value of 61 in 2 T magnetic field due to the reduced formation of Fe2B,better grain connectivity and homogenous *** microstructural analysis,the focused ion beam(FIB)is utilised for the first time to acquire three-dimensional microstructures and elemental mappings of the interface between the Fe barrier and MgB2 core of different *** results have shown that if the sintering temperature can be controlled properly,the Je and n-value of the wire are still acceptable for magnet *** formation of Fe2B is identified along the edge of MgB2,as the temperature increases,the content of Fe2B also increases which causes the degradation in the performance of wires.

关键词： Superconducting wires MgB2 MRI magnet engineering critical current density Fe2B

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Single-shot quantitative phase gradient microscopy using physics-based untrained neural network phase retrieval 11

Single-shot quantitative phase gradient microscopy using phy...

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Quantitative Phase Imaging XI 2025

作者： Hur, Sun Woong Sengupta, Sourya Kwon, Minsung Manoharaan, Revathi Anastasio, Mark Bhargava, Rohit Department of Bioengineering University of Illinois Urbana-ChampaignIL United States Department of Electrical and Computer Engineering University of Illinois Urbana-ChampaignIL United States Beckman Institute for Advanced Science and Technology University of Illinois Urbana-ChampaignIL United States Department of Computer Science Carle-Illinois College of Medicine University of Illinois Urbana-ChampaignIL United States Department of Chemical and Biomolecular Engineering Mechanical Science and Engineering and Chemistry Cancer Center at Illinois University of Illinois Urbana-ChampaignIL United States CZ Biohub Chicago LLC IL United States

ISBN: (纸本)9781510684065

Single-shot quantitative phase gradient microscopy (ss-QPGM) enables quantitative phase imaging (QPI) based on differential interference contrast (DIC) microscopy. In ss-QPGM, the analyzer is replaced by a quarter-wave plate and a polarization camera, allowing for phase gradient extraction from a single intensity measurement. The quantitative phase image is reconstructed via numerical integration, but direct integration along a single axis introduces artifacts and phase errors due to missing frequency response along the axis of orthogonal to the shear axis and noise-induced streak lines. In this work, we propose a phase retrieval method for ss-QPGM using an untrained neural network (UNN), which integrates physical priors without requiring paired ground truth and input datasets, overcoming the limitations of traditional regularization methods such as Tikhonov regularization and the alternating direction method of multipliers (ADMM) with total variation (TV) regularization. We demonstrate that the UNN approach not only offers superior phase reconstruction but also alleviates artifacts induced by missing frequency response along the axis and noise-induced streak lines, as shown by phase images of a calibrated target and biological samples. © 2025 SPIE.

关键词： Image reconstruction

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A Cuban Campesino in Chemistry's Academic Court

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JOURNAL OF PHYSICAL CHEMISTRY A 2021年第30期125卷 6505-6511页

作者： Hernandez, Rigoberto Department of Chemistry Johns Hopkins University Baltimore Maryland 21218 United States Departments of Chemical & Biomolecular Engineering and Materials Science and Engineering Johns Hopkins University Baltimore Maryland 21218 United States

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BaTiO_(3)@Au nanoheterostructure suppresses triple-negative breast cancer by persistently disrupting mitochondrial energy metabolism

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Nano Research 2023年第2期16卷 2775-2785页

作者： Yanlin Feng Jianlin Wang Xin Ning Aiyun Li Qing You Wanzhen Su Deping Wang Jianyun Shi Lan Zhou Fangfang Cao Xiaoyuan Chen Jimin Cao Key Laboratory of Cellular Physiology at Shanxi Medical University Ministry of Educationand the Department of PhysiologyShanxi Medical UniversityTaiyuan 030001China Departments of Diagnostic Radiology SurgeryChemical and Biomolecular Engineeringand Biomedical EngineeringYong Loo Lin School of Medicine and Faculty of EngineeringNational University of SingaporeSingapore 119074Singapore Clinical Imaging Research Centre Centre for Translational MedicineYong Loo Lin School of MedicineNational University of SingaporeSingapore 117599Singapore Nanomedicine Translational Research Program NUS Center for NanomedicineYong Loo Lin School of MedicineNational University of SingaporeSingapore 117597Singapore

Abnormal metabolism has become a potential target for highly malignant and invasive triple-negative breast cancer(TNBC)due to its relatively low response to traditional *** existing metabolic interventions demonstrated unsatisfactory therapeutic outcomes and potential systemic toxicity,resulting from the metabolic instability and limited targeting ability of inhibitors as well as complex tumor *** address these limitations,here we developed a robust pyroelectric BaTiO_(3)@Au core–shell nanostructure(BTO@Au)to selectively and persistently block energy generation of tumor *** by near-infrared(NIR)laser,the Au shell could generate heat to activate the BaTiO_(3)core to produce reactive oxygen species(ROS)regardless of the constrained microenvironment,thus prominently inhibits mitochondrial oxidative phosphorylation(OXPHOS)and reduces ATP production to induce TNBC cell *** therapeutic effects have been well demonstrated in vitro and in vivo,paving a new way for the development of metabolic interventions.

关键词： pyroelectric nanoheterostructure reactive oxidative species(ROS) metabolic interventions mitochondrial oxidative phosphorylation(OXPHOS) triple-negative breast cancer(TNBC)

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