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Toward Single-Atomic-Layer Lithography on Highly Oriented Pyrolytic Graphite Surfaces Using AFM-Based Electrochemical Etching

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Nanomanufacturing and Metrology 2022年第1期5卷 32-38页

作者： Wei Han Paven Thomas Mathew Srikanth Kolagatla brian j.rodriguez Fengzhou Fang Centre of Micro/Nano Manufacturing Technology(MNMT-Dublin) University College DublinDublin D04 V1W&I reland Shanghai Engineering Research Centre of Ultra-Precision Optical Manufacturing Fudan UniversityShanghai 200433China School of Physics University College DublinDublin D04 V1W&Ireland Conway Institute of Biomolecular and Biomedical Research University College DublinDublin D04 V1W&Ireland State Key Laboratory of Precision Measuring Technology and Instruments Laboratory of Micro/Nano Manufacturing Technology(MNMT)Tianjin UniversityTianjin 300072China

Atomic force microscopy(AFM)-based electrochemical etching of a highly oriented pyrolytic graphite(HOPG)surface is studied toward the single-atomic-layer lithography of intricate *** etching is performed in the water meniscus formed between the AFM tip apex and HOPG surface due to a capillary effect under controlled high relative humid-ity(~75%)at otherwise ambient *** conditions to etch nano-holes,nano-lines,and other intricate patterns are *** clectrochemical reactions of HOPG etching should not generatc debris duc to the conversion of graphite to gaseous CO and CO_(2)based on etching ***,debris is observed on the etched HOPG surface,and incom-plete gasification of carbon occurs during the etching process,resulting in the generation of solid ***,the applied potential is of critical importance for precise etching,and the precision is also significantly influenced by the AFM tip *** study shows that the AFM-based electrochemical etching has the potential to remove the material in a single-atomic-layer *** result is likely because the etching process is based on anodic dissolution,resulting in the material removal atom by atom.

关键词： Etching Lithography Electrochemical machining Atomic and close-to-atomic scale manufacturing(ACSM)

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Atomic and Close-to-Atomic Scale Manufacturing:A Review on Atomic Layer Removal Methods Using Atomic Force Microscopy

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Nanomanufacturing and Metrology 2020年第3期3卷 167-186页

作者： Paven Thomas Mathew brian j.rodriguez Fengzhou Fang Centre of Micro/Nano Manufacturing Technology(MNMT-Dublin) University College DublinDublin D04V1W8Ireland School of Physics University College DublinBelfieldDublin D04 V1W8Ireland Conway Institute of Biomolecular and Biomedical Research University College DublinBelfield.Dublin D04V1W8Ireland State Key Laboratory of Precision Measuring Technology and Instruments Centre of Micro/Nano Manufacturing TechnologyMNMT.Tianjin UniversityTianjin 300072China

Manufacturing at the atomic scale is the next generation of the industrial *** and close-to-atomic scalemanufacturing(ACSM)helps to achieve *** force microscopy(AFM)is a promising method for this purposesince an instrument to machine at this small scale has not yet been *** the need for increasing the number ofelectronic components inside an integrated circuit chip is emerging in the present-day scenario,methods should be adoptedto reduce the size of connections inside the *** can be achieved using ***,connecting moleculeswith the electrodes and then to the external world is *** must be laid to make this possible for *** layer removal,down to one atom,can be employed for this ***,theoretical works are beingperformed extensively to study the interactions happening at the molecule-electrode junction,and how electronic transportis affected by the functionality and robustness of the *** theoretical studies can be verified experimentally only if nano electrodes are *** is widely used in the semiconductor industry to fabricate electronic ***,carbon-based materials such as highly oriented pyrolytic graphite,gold,and silicon carbide find applications inthe electronic device manufacturing ***,ACSM of these materials should be developed *** paperpresents a review on the state-of-the-art research performed on material removal at the atomic scale by electrochemical andmechanical methods of the mentioned materials using AFM and provides a roadmap to achieve effective mass productionof these devices.

关键词： Atomic force microscopy Atomic-scale manufacturing Molecular scale devices Electrochemistry ACSM ManufacturingⅢ

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Liquid-phase 3D bioprinting of gelatin alginate hydrogels:influence of printing parameters on hydrogel line width and layer height

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Bio-Design and Manufacturing 2019年第3期2卷 172-180页

作者： Maha Alruwaili jose A.Lopez Kevin McCarthy Emmanuel G.Reynaud brian j.rodriguez Conway Institute of Biomolecular and Biomedical Research University College DublinDublinIreland School of Physics University College DublinDublinIreland School of Biomolecular and Biomedical Science University College DublinDublinIreland

Extrusion-based 3D bioprinting is a direct deposition approach used to create three-dimensional(3D)tissue scaffolds typically comprising *** are hydrated polymer networks that are chemically or physically ***,3D bioprinting is performed in air,despite the hydrated nature of hydrogels and the potential advantage of using a liquid phase to provide cross-linking and otherwise functionalize the *** this work,we print gelatin alginate hydrogels directly into a cross-linking solution of calcium chloride and investigate the influence of nozzle diameter,distance between nozzle and surface,calcium chloride concentration,and extrusion rate on the dimensions of the printed *** hydrogel layer height was generally found to increase with increasing extrusion rate and nozzle distance,according to the increased volume extruded and the available space,*** addition,the hydrogel width was generally found to increase with decreasing nozzle distance and cross-linking concentration corresponding to confinement-induced spreading and low crosslinking regimes,***/height ratios of^1 were generally achieved when the nozzle diameter and distance were comparable above a certain cross-linking *** these relationships,biocompatible 3D multilayer structures were successfully printed directly into calcium chloride cross-linking solution.

关键词： Gelatin alginate Hydrogel Additive manufacturing 3D printing 3D bioprinting Biomaterials Extrusion Bioplotting

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Foreword to the Special Issue on SPM-Based Nanofabrication:Machining,Electrochemistry,and Lithography

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Nanomanufacturing and Metrology 2022年第1期5卷 1-1页

作者： brian j.rodriguez jason I.Kilpatrick University College Dublin BelfieldDublin 4Ireland

Scanning probe microscopy(SPM)and atomic force microscopy(AFM)are widely used for surface imaging and characterization,combining nano-to atomic-scale precision with highly sensitive force ***,AFM is considered an enabling technology,impacting many scientific fields,including life and materials *** addition to mapping interaction forces,AFM can be used for the precise application of forces(controlling both location and magnitude),in combination with the application of electrical bias and controlled ***,when combined with advances in nanoscale probe technology,SPM-based nanofabrication enables state-of-the-art nanomanufacturing at interfaces.

关键词： SPM forces precise

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Deterministic Dual Control of Phase Competition in Strained BiFeO_(3):A Multiparametric Structural Lithography Approach

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Nanomanufacturing and Metrology 2022年第1期5卷 60-66页

作者： Nathan Black David Edwards Niall Browne joseph G.M.Guy Niyorjyoti Sharma Kristina M・Holsgrove Aaron B.Naden Raymond G.P.McQuaid brian j.rodriguez Amit Kumar School of Maths and Physics Queen's University BelfastBelfast BT7 INNUK School of Chemistry University of St.AndrewsSt Andrews KY169STUK School of Physics University College DublinBelfieldDublin 4Ireland

The realization of a mixed-phase microstructure in strained BiFeO_(3)(BFO)thin films has led to numerous novel effects derived from the coexistence of the tetragonal-like monoclinic phase(T phase)and rhombohedral-like monoclinic phase(R phase).Strong strain and polarization diiferences between the phases should result in a high level of transformation plasticity,which enables the continuous alteration of the relative proportion of R and T states in response to external *** the potential for utilizing such plasticity to control mixed-phase populations under external stimuli is evident,direct experi・mental evidence backed by equilibrium predictions has not yet been fully *** we demonstrate deterministic control of mixed-phase populations in an epitaxially strained BFO thin film through the application of localized stresses and electric fields in a reversible manne匚The results illustrate and rationalize deterministic control of mixed phases in strained BFO films,which could be crucial in tuning their functional *** findings also highlight a new multiparametric technique in the scanning probe lithography toolbox based on tip-assisted electric and strain field manipulation of functional properties that might find application beyond the ferroelectric domain and structural phase lithography.

关键词： Phase competition Ferroelectric Stress Lithography

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书写“入场券”

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科学新闻 2024年第4期 63-64页

作者： Violeta j.rodriguez 倪伟波美国伊利诺伊大学厄巴纳—香槟分校

“作为一个移民，你是怎么发表这么多作品的？”去年我参加教师职位面试时，了解到我的母语不是英语后，人们无数次地问我类似的问题。我知道公开的奋斗故事不太可能让我找到工作，所以我会笑着说：“我喜欢写作！”但事实是写作并不容...

“作为一个移民，你是怎么发表这么多作品的？”去年我参加教师职位面试时，了解到我的母语不是英语后，人们无数次地问我类似的问题。我知道公开的奋斗故事不太可能让我找到工作，所以我会笑着说：“我喜欢写作！”但事实是写作并不容易。9岁时，只懂西班牙语的我来到美国。读本科时，我花了几个月时间写毕业论文。我认为它已经足够好了，结果从导师那里拿回论文时，它被涂满了鲜红色标记，表明我还有很长的路要走。我知道自己需要逐渐形成出版记录，以便在一个像我这样背景的人稀缺的世界中脱颖而出。

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Why and how to use the SeqCode

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mLife 2024年第1期3卷 1-13页

作者： Wiliam B.Whitman Maria Chuvochina brian P.Hedlund Konstantinos T.Konstantinidis Marike Palmer Luis M.rodriguez-R lain Sutcliffe Fengping Wang Deparment of Microbioogy University of GeorgiaAthensGeorgiaUAA Schoolof Chemistry and Molecular Biosciences Australian CentreforEogenomicsThe Universty of QueenslandSt LuciaAustralia University of Nevada Las Vegas Las VegasNevadaUSA Schol of Civil and Environmental Engineering and School of Biological SciencesGeorgia Institute of TechnologyAtlantaGeorgiaUSA Department of Microbiology University of ManitobaWinnipegManitobaCanada School of Life Sciences University of Nevada Las VegasLas VegasNevadaUSA Department of Microbiology and Digital Science Center(DiSC) University of InnsbruckInnsbruckAustria Faculty of Health&Life Sciences Northumbria UniversityNewcastle upon TyneUK School of Oceanography International Center for Deep Life InvestigationShanghai Jiao Tong UniversityShanghaiChina

The SeqCode,formally called the Code of Nomenclature of Prokaryotes Described from Sequence Data,is a new code of nomenclature in which genome sequences are the nomenclatural types for the names of prokaryotic *** similar to the International Code of Nomenclature of Prokaryotes(ICNP)in structure and rules of priority,it does not require the deposition of type strains in international culture ***,it allows for the formation of permanent names for uncultured prokaryotes whose nearly complete genome sequences have been obtained directly from environmental DNA as well as other prokaryotes that cannot be deposited in culture *** the diversity of uncultured prokaryotes greatly exceeds that of readily culturable prokaryotes,the SeqCode is the only code suitable for naming the majority of prokaryotic *** start date of the SeqCode was january 1,2022,and the online Registry(https://***)was created to ensure valid publication of *** SeqCode recognizes all names validly published under the ICNP before *** that date,names validly published under the SeqCode compete with ICNP names for *** a result,species can have only one name,either from the SeqCode or ICNP,enabling effective communication and the creation of unified taxonomies of uncultured and cultured *** SeqCode is administered by the SeqCode Committee,which is comprised of the SeqCode Community and elected administrative *** with an interest in the systematics of prokaryotes is encouraged to join the SeqCode Community and participate in the development of this resource.

关键词： genome sequences metagenome-assembled genomes nomenclature SeqCode

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Identific tion of quantitative trait loci and associated candidate genes for pregnancy success in Angus–Brahman crossbred heifers

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journal of Animal Science and Biotechnology 2024年第1期15卷 162-170页

作者： Quinn A.Hoorn Gabriel A.Zayas Eduardo E.rodriguez Laura M.jensen Raluca G.Mateescu Peter j.Hansen Department of Animal Sciences Donald Henry Barron Reproductive and Perinatal Biology Research Programand the Genetics InstituteUniversity of FloridaGainesvilleFLUSA School of Applied Systems Biology La Trobe UniversityBundooraVIC 3083Australia

Background In beef cattle, more than 50% of the energy input to produce a unit of beef is consumed by the female that produced the calf. Development of genomic tools to identify females with high genetic merit for reproductive function could increase the profitability and sustainability of beef *** Genome-wide association studies(GWAS) were performed using a single-step genomic best linear unbiased prediction approach on pregnancy outcome traits from a population of Angus–Brahman crossbred heifers. Furthermore, a validation GWAS was performed using data from another farm. Heifers were genotyped with the Bovine GGP F250 array that contains 221,077 SNPs. In the discovery population, heifers were bred in winter breeding seasons involving a single round of timed artificial insemination(AI) followed by natural mating for 3 months. Two phenotypes were analyzed: pregnancy outcome to first-service AI(PAI;n = 1,481) and pregnancy status at the end of the breeding season(PEBS;n = 1,725). The heritability was estimated as 0.149 and 0.122 for PAI and PEBS, respectively. In the PAI model, one quantitative trait locus(QTL), located between 52.3 and 52.5 Mb on BTA7, explained about 3% of the genetic variation, in a region containing a cluster of γ-protocadherin genes and SLC25A2. Other QTLs explaining between 0.5% and 1% of the genetic variation were found on BTA12 and 25. In the PEBS model, a large QTL on BTA7 was synonymous with the QTL for PAI, with minor QTLs located on BTA5, 9, 10, 11, 19, and 20. The validation population for pregnancy status at the end of the breeding season were Angus–Brahman crossbred heifers bred by natural mating. In concordance with the discovery population, the large QTL on BTA7 and QTLs on BTA10 and 12 were *** In summary, QTLs and candidate SNPs identified were associated with pregnancy outcomes in beef heifers, including a large QTL associated with a group of protocadherin genes. Confirmation of these associations

关键词： Beef cattle Fertility GWAS QTL

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Mortality rate after total knee arthroplasty or total hip arthroplasty in patients with a history of liver transplant

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World journal of Orthopedics 2024年第4期15卷 310-311页

作者： E Carlos rodriguez-Merchan Department of Orthopedic Surgery La Paz University Hospital-IdiPazMadrid 28046Spain

In this editorial I comment on the article by Ahmed et al published in a recent issue of the World j Orthop 2023;14:*** is well known that patients who have undergone a liver transplant(LT)may need to have a total hip arthroplasty(THA)or total knee arthroplasty(TKA)*** et al stated that the mortality rate in these patients was similar to the one of the general ***,there are three articles previously published that found higher mortality in LT patients who experienced THA/TKA than in the general population(individuals without LT).Therefore,in this Editorial I would like to point out that there is controversy in the literature regarding whether LT patients undergoing THA/TKA have higher mortality than the general ***,future research should attempt to resolve this controversy.

关键词： Liver transplant Total knee arthroplasty Total hip arthroplasty Results Mortality

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Explainable Artificial Intelligence(XAI)Model for Cancer Image Classification

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Computer Modeling in Engineering & Sciences 2024年第10期141卷 401-441页

作者： Amit Singhal Krishna Kant Agrawal Angeles Quezada Adrian rodriguez Aguiñaga Samantha jiménez Satya Prakash Yadav Department of Computer Science&Engineering Raj Kumar Goel Institute of TechnologyGhaziabad201017India Department of School of Computing Science and Engineering Galgotias UniversityGreater Noida203201India Tecnológico Nacional de México Campus Tijuana Baja California22414México Universidad Autónoma de Baja California TijuanaBaja California22414México Department of Computer Science and Engineering G.LBajaj Institute of Technology and Management(GLBITM)Affiliated to Dr.A.P.J.Abdul Kalam Technical UniversityLucknow201306India School of Computer Science Engineering and Technology(SCSET) Bennett UniversityGreater Noida201310India

The use of Explainable Artificial Intelligence(XAI)models becomes increasingly important for making decisions in smart healthcare *** is to make sure that decisions are based on trustworthy algorithms and that healthcare workers understand the decisions made by these *** models can potentially enhance interpretability and explainability in decision-making processes that rely on artificial ***,the intricate nature of the healthcare field necessitates the utilization of sophisticated models to classify cancer *** research presents an advanced investigation of XAI models to classify cancer *** describes the different levels of explainability and interpretability associated with XAI models and the challenges faced in deploying them in healthcare *** addition,this study proposes a novel framework for cancer image classification that incorporates XAI models with deep learning and advanced medical imaging *** proposed model integrates several techniques,including end-to-end explainable evaluation,rule-based explanation,and useradaptive *** proposed XAI reaches 97.72%accuracy,90.72%precision,93.72%recall,96.72%F1-score,9.55%FDR,9.66%FOR,and 91.18%*** will discuss the potential applications of the proposed XAI models in the smart healthcare *** will help ensure trust and accountability in AI-based decisions,which is essential for achieving a safe and reliable smart healthcare environment.

关键词： Explainable artificial intelligence artificial intelligence XAI healthcare cancer image classification

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