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  1. Book ; Online: Micro- and Nano-Fabrication by Metal Assisted Chemical Etching

    Romano, Lucia

    2021  

    Keywords History of engineering & technology ; porous silicon ; Pd nanoparticles-assisted chemical etching ; etching rate ; ethanol electrooxidation ; X-ray diffractive optics ; zone plate ; high aspect ratio nanostructures ; metal-assisted chemical etching ; electroless deposition ; Al2O3 nanotube ; ultra-high aspect ratio ; gold (Au) metal assisted chemical etching ; atomic layer deposition ; anisotropic dry etching ; silicon cones ; metal assisted chemical etching ; transversal pores ; antireflection ; black GaAs ; photon recycling ; X-ray grating interferometry ; catalyst ; silicon ; gold electroplating ; magnetically guided metal-assisted chemical etching ; bulk Si etching ; curved Si structure ; catalyst encapsulation ; n/a
    Size 1 electronic resource (106 pages)
    Publisher MDPI - Multidisciplinary Digital Publishing Institute
    Publishing place Basel, Switzerland
    Document type Book ; Online
    Note English ; Open Access
    HBZ-ID HT021044620
    ISBN 9783039438464 ; 3039438468
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Article: Editorial for the Special Issue on Micro- and Nano-Fabrication by Metal Assisted Chemical Etching.

    Romano, Lucia

    Micromachines

    2020  Volume 11, Issue 11

    Abstract: Discovered by Li and Bohn in 2000 [1], Metal Assisted Chemical Etching has been finally recognized as an emerging etching technology.[ ... ]. ...

    Abstract Discovered by Li and Bohn in 2000 [1], Metal Assisted Chemical Etching has been finally recognized as an emerging etching technology.[...].
    Language English
    Publishing date 2020-10-31
    Publishing country Switzerland
    Document type Editorial
    ZDB-ID 2620864-7
    ISSN 2072-666X
    ISSN 2072-666X
    DOI 10.3390/mi11110988
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Editorial for the Special Issue on Recent Advances in Reactive Ion Etching and Applications of High-Aspect-Ratio Microfabrication.

    Romano, Lucia / Jefimovs, Konstantins

    Micromachines

    2023  Volume 14, Issue 8

    Abstract: Reactive ion etching (RIE) is the dominating technology for micromachining semiconductors with a high aspect ratio (HAR) [ ... ]. ...

    Abstract Reactive ion etching (RIE) is the dominating technology for micromachining semiconductors with a high aspect ratio (HAR) [...].
    Language English
    Publishing date 2023-08-18
    Publishing country Switzerland
    Document type Editorial
    ZDB-ID 2620864-7
    ISSN 2072-666X
    ISSN 2072-666X
    DOI 10.3390/mi14081630
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Microfabrication of X-ray Optics by Metal Assisted Chemical Etching: A Review.

    Romano, Lucia / Stampanoni, Marco

    Micromachines

    2020  Volume 11, Issue 6

    Abstract: High-aspect-ratio silicon micro- and nanostructures are technologically relevant in several applications, such as microelectronics, microelectromechanical systems, sensors, thermoelectric materials, battery anodes, solar cells, photonic devices, and X- ... ...

    Abstract High-aspect-ratio silicon micro- and nanostructures are technologically relevant in several applications, such as microelectronics, microelectromechanical systems, sensors, thermoelectric materials, battery anodes, solar cells, photonic devices, and X-ray optics. Microfabrication is usually achieved by dry-etch with reactive ions and KOH based wet-etch, metal assisted chemical etching (MacEtch) is emerging as a new etching technique that allows huge aspect ratio for feature size in the nanoscale. To date, a specialized review of MacEtch that considers both the fundamentals and X-ray optics applications is missing in the literature. This review aims to provide a comprehensive summary including: (i) fundamental mechanism; (ii) basics and roles to perform uniform etching in direction perpendicular to the <100> Si substrate; (iii) several examples of X-ray optics fabricated by MacEtch such as line gratings, circular gratings array, Fresnel zone plates, and other X-ray lenses; (iv) materials and methods for a full fabrication of absorbing gratings and the application in X-ray grating based interferometry; and (v) future perspectives of X-ray optics fabrication. The review provides researchers and engineers with an extensive and updated understanding of the principles and applications of MacEtch as a new technology for X-ray optics fabrication.
    Language English
    Publishing date 2020-06-12
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2620864-7
    ISSN 2072-666X
    ISSN 2072-666X
    DOI 10.3390/mi11060589
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Proctological disorders: psychometrics assessment of personality features and clinical evaluation.

    Giuliani, Antonio / Romano, Lucia / Attanasio, Margherita / Tersigni, Leonardo / Iacobelli, Elisabetta / Mazza, Monica

    Updates in surgery

    2023  Volume 75, Issue 8, Page(s) 2291–2296

    Abstract: Patients with gastrointestinal diseases have been shown to report greater stress, anxiety, depression and obsessive-compulsive characteristics. The aim of our study is to investigate personality characteristics and general distress of adult patients ... ...

    Abstract Patients with gastrointestinal diseases have been shown to report greater stress, anxiety, depression and obsessive-compulsive characteristics. The aim of our study is to investigate personality characteristics and general distress of adult patients suffering from common coloproctological conditions. We conducted a retrospective observational study including patients aged 18 years or older, with diagnosis of haemorrhoidal disease (HD group) or anal fissure (AF group). The final sample was composed of 64 participants, who were asked to complete a battery of questionnaires. They were compared with a control group of healthy volunteers. In terms of general distress, HD group scored higher than both the CG and AF groups. The two proctological groups had higher scores in neuroticism/emotional lability compared to the CG group. In the MOCQ-R scale (obsessive-compulsive tendency), HD group had significantly higher scores compared to the CG group in the total score (p < 0.01,) and also scored higher in the doubting/ruminating subscale compared to the AF group. We support the importance of taking a multidisciplinary perspective and incorporating psychometric tools to assess the psychological and personality dimensions of patients into proctological clinical practice. The correct early evaluation and management of these conditions may result in an improvement in patients' quality of life and better response to treatment.
    MeSH term(s) Adult ; Humans ; Psychometrics ; Quality of Life ; Anxiety Disorders/diagnosis ; Anxiety Disorders/psychology ; Retrospective Studies ; Personality ; Surveys and Questionnaires
    Language English
    Publishing date 2023-06-03
    Publishing country Italy
    Document type Observational Study ; Journal Article
    ZDB-ID 2572692-4
    ISSN 2038-3312 ; 2038-131X
    ISSN (online) 2038-3312
    ISSN 2038-131X
    DOI 10.1007/s13304-023-01548-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Towards the Fabrication of High-Aspect-Ratio Silicon Gratings by Deep Reactive Ion Etching.

    Shi, Zhitian / Jefimovs, Konstantins / Romano, Lucia / Stampanoni, Marco

    Micromachines

    2020  Volume 11, Issue 9

    Abstract: The key optical components of X-ray grating interferometry are gratings, whose profile requirements play the most critical role in acquiring high quality images. The difficulty of etching grating lines with high aspect ratios when the pitch is in the ... ...

    Abstract The key optical components of X-ray grating interferometry are gratings, whose profile requirements play the most critical role in acquiring high quality images. The difficulty of etching grating lines with high aspect ratios when the pitch is in the range of a few micrometers has greatly limited imaging applications based on X-ray grating interferometry. A high etching rate with low aspect ratio dependence is crucial for higher X-ray energy applications and good profile control by deep reactive ion etching of grating patterns. To achieve this goal, a modified Coburn-Winters model was applied in order to study the influence of key etching parameters, such as chamber pressure and etching power. The recipe for deep reactive ion etching was carefully fine-tuned based on the experimental results. Silicon gratings with an area of 70 × 70 mm
    Language English
    Publishing date 2020-09-18
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2620864-7
    ISSN 2072-666X
    ISSN 2072-666X
    DOI 10.3390/mi11090864
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Acute pancreatitis: an overview.

    Le'clerc Nicolas, Jean / Romano, Lucia / Giuliani, Antonio

    Minerva gastroenterologica e dietologica

    2020  Volume 66, Issue 3, Page(s) 290–291

    MeSH term(s) Humans ; Pancreatitis/diagnosis ; Pancreatitis/therapy
    Language English
    Publishing date 2020-04-08
    Publishing country Italy
    Document type Letter
    ZDB-ID 1077354-x
    ISSN 1827-1642 ; 1121-421X ; 0026-4776
    ISSN (online) 1827-1642
    ISSN 1121-421X ; 0026-4776
    DOI 10.23736/S1121-421X.20.02681-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: The choice of an autocorrelation length in dark-field lung imaging.

    Spindler, Simon / Etter, Dominik / Rawlik, Michał / Polikarpov, Maxim / Romano, Lucia / Shi, Zhitian / Jefimovs, Konstantins / Wang, Zhentian / Stampanoni, Marco

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 2731

    Abstract: Respiratory diseases are one of the most common causes of death, and their early detection is crucial for prompt treatment. X-ray dark-field radiography (XDFR) is a promising tool to image objects with unresolved micro-structures such as lungs. Using ... ...

    Abstract Respiratory diseases are one of the most common causes of death, and their early detection is crucial for prompt treatment. X-ray dark-field radiography (XDFR) is a promising tool to image objects with unresolved micro-structures such as lungs. Using Talbot-Lau XDFR, we imaged inflated porcine lungs together with Polymethylmethacrylat (PMMA) microspheres (in air) of diameter sizes between 20 and 500 [Formula: see text] over an autocorrelation range of 0.8-5.2 [Formula: see text]. The results indicate that the dark-field extinction coefficient of porcine lungs is similar to that of densely-packed PMMA spheres with diameter of [Formula: see text], which is approximately the mean alveolar structure size. We evaluated that, in our case, the autocorrelation length would have to be limited to [Formula: see text] in order to image [Formula: see text]-thick lung tissue without critical visibility reduction (signal saturation). We identify the autocorrelation length to be the critical parameter of an interferometer that allows to avoid signal saturation in clinical lung dark-field imaging.
    MeSH term(s) Animals ; Swine ; Polymethyl Methacrylate ; Lung/diagnostic imaging ; Radiography ; X-Rays
    Chemical Substances Polymethyl Methacrylate (9011-14-7)
    Language English
    Publishing date 2023-02-15
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-29762-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Pixel-wise beam-hardening correction for dark-field signal in X-ray dual-phase grating interferometry.

    Tang, Ruizhi / Organista, Caori / Romano, Lucia / Van Hoorebeke, Luc / Stampanoni, Marco / Aelterman, Jan / Boone, Matthieu N

    Optics express

    2023  Volume 31, Issue 24, Page(s) 40450–40468

    Abstract: The dark-field signal provided by X-ray grating interferometry is an invaluable tool for providing structural information beyond the direct spatial resolution and their variations on a macroscopic scale. However, when using a polychromatic source, the ... ...

    Abstract The dark-field signal provided by X-ray grating interferometry is an invaluable tool for providing structural information beyond the direct spatial resolution and their variations on a macroscopic scale. However, when using a polychromatic source, the beam-hardening effect in the dark-field signal makes the quantitative sub-resolution structural information inaccessible. Especially, the beam-hardening effect in dual-phase grating interferometry varies with spatial location, inter-grating distance, and diffraction order. In this work, we propose a beam-hardening correction algorithm, taking into account all these factors. The accuracy and robustness of the algorithm are then validated by experimental results. This work contributes a necessary step toward accessing small-angle scattering structural information in dual-phase grating interferometry.
    Language English
    Publishing date 2023-12-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.499397
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Excisional Hemorrhoidectomy Versus Dearterialization With Mucopexy for the Treatment of Grade III Hemorrhoidal Disease: The EMODART3 Multicenter Study.

    Giuliani, Antonio / Romano, Lucia / Necozione, Stefano / Cofini, Vincenza / Di Donato, Giada / Schietroma, Mario / Carlei, Francesco

    Diseases of the colon and rectum

    2023  Volume 66, Issue 12, Page(s) e1254–e1263

    Abstract: Background: Over the past few decades, several surgical approaches have been proposed to treat hemorrhoids.: Objective: This multicenter study aimed to compare transanal hemorrhoidal artery ligation and conventional excisional hemorrhoidectomy for ... ...

    Abstract Background: Over the past few decades, several surgical approaches have been proposed to treat hemorrhoids.
    Objective: This multicenter study aimed to compare transanal hemorrhoidal artery ligation and conventional excisional hemorrhoidectomy for grade III hemorrhoidal disease.
    Design: Multicenter retrospective study.
    Settings: Any center belonging to the Italian Society of Colorectal Surgery in which at least 30 surgical procedures per year for hemorrhoidal disease were performed was able to join the study.
    Patients: Clinical data from patients with Goligher's grade III hemorrhoidal disease who underwent excisional hemorrhoidectomy or hemorrhoidal artery ligation were retrospectively analyzed after a 24-month follow-up period.
    Main outcome measures: The primary aims were to evaluate the adoption of 2 different surgical techniques and to compare them in terms of symptoms, postoperative adverse events, and recurrences at a 24-month follow-up.
    Results: Data from 1681 patients were analyzed. The results of both groups were comparable in terms of postoperative clinical score by multiple regression analysis and matched case-control analysis. Patients who underwent excisional hemorrhoidectomy had a significantly higher risk of postoperative complication (adjusted OR = 1.58; p = 0.006). A secondary analysis highlighted that excisional hemorrhoidectomy performed with new devices and hemorrhoidal artery ligation reported a significantly lower risk for complications than excisional hemorrhoidectomy performed with traditional monopolar diathermy. At the 24-month follow-up assessment, recurrence was significantly higher in the hemorrhoidal artery ligation group (adjusted OR = 0.50; p = 0.001). A secondary analysis did not show a higher risk of recurrences based on the type of device.
    Limitations: The retrospective design and the self-reported nature of data from different centers.
    Conclusions: Hemorrhoidal artery ligation is an effective option for grade III hemorrhoidal disease; however, it is burdened by a high risk of recurrences. Excisional hemorrhoidectomy performed with newer devices is competitive in terms of postoperative complications.HEMORROIDECTOMÍA POR ESCISIÓN VERSUS DESARTERIALIZACIÓN CON MUCOPEXIA PARA EL TRATAMIENTO DE LA ENFERMEDAD HEMORROIDAL DE GRADO 3: EL ESTUDIO MULTICÉNTRICO EMODART3ANTECEDENTES:En las últimas décadas se han propuesto varios abordajes quirúrgicos para el tratamiento de las hemorroides.OBJETIVO:Este estudio multicéntrico tiene como objetivo comparar la ligadura de la arteria hemorroidal transanal y la hemorroidectomía por escisión convencional para la enfermedad hemorroidal de grado III.DISEÑO:Estudio retrospectivo multicéntrico.ÁMBITO:Cualquier centro perteneciente a la Sociedad Italiana de Cirugía Colorrectal en el que se realizaron al menos 30 procedimientos quirúrgicos por año para la enfermedad hemorroidal pudo participar en el estudio.PACIENTES:Los datos clínicos de pacientes con enfermedad hemorroidal de grado III de Goligher que se sometieron a hemorroidectomía por escisión o ligadura de arterias hemorroidales se analizaron retrospectivamente después de un período de seguimiento de 24 meses.PRINCIPALES MEDIDAS DE RESULTADO:Los objetivos primarios fueron evaluar la adopción de dos técnicas quirúrgicas diferentes y compararlas en términos de síntomas, eventos adversos posoperatorios y recurrencias a los 24 meses de seguimiento.RESULTADOS:Se analizaron datos de 1681 pacientes. Los 2 grupos resultaron ser comparables en términos de puntuación clínica posoperatoria mediante análisis de regresión múltiple y análisis de casos y controles emparejados. Los pacientes sometidos a hemorroidectomía excisional tuvieron un riesgo significativamente mayor de complicaciones posoperatorias (odds ratio ajustado = 1,58; p = 0,006). Un análisis secundario destacó que la hemorroidectomía por escisión realizada con nuevos dispositivos y la ligadura de la arteria hemorroidal informaron un riesgo significativamente menor de complicaciones que la hemorroidectomía por escisión realizada con diatermia monopolar tradicional. En la evaluación de seguimiento de 24 meses, la recurrencia fue significativamente mayor en el grupo de ligadura de la arteria hemorroidal (razón de probabilidad ajustada = 0,50; p = 0,001). Un análisis secundario no mostró un mayor riesgo de recurrencias según el tipo de dispositivo.LIMITACIONES:El diseño retrospectivo y el carácter autoinformado de los datos de diferentes centros.CONCLUSIÓN:HAL es una opción efectiva para la enfermedad hemorroidal grado III; sin embargo, se ve afectado por un alto riesgo de recurrencias. La hemorroidectomía por escisión realizada con dispositivos más nuevos es competitiva en términos de complicaciones posoperatorias. (Traducción-Dr Yolanda Colorado ).
    MeSH term(s) Humans ; Hemorrhoidectomy/adverse effects ; Retrospective Studies ; Hemorrhoids/surgery ; Digestive System Surgical Procedures/methods ; Rectum ; Postoperative Complications/etiology
    Language English
    Publishing date 2023-08-24
    Publishing country United States
    Document type Multicenter Study ; Journal Article
    ZDB-ID 212581-x
    ISSN 1530-0358 ; 0012-3706
    ISSN (online) 1530-0358
    ISSN 0012-3706
    DOI 10.1097/DCR.0000000000002885
    Database MEDical Literature Analysis and Retrieval System OnLINE

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