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95 Results Found

  • Article
  • Open Access
3 Citations
2,421 Views
15 Pages

In this paper, we present an experimental procedure to enhance the dimensional accuracy of fabrication via stereolithography (SLA) of features at the sub-mm scale. Deviations in sub-mm hemispherical cavity diameters were detected and measured on cust...

  • Review
  • Open Access
9 Citations
6,182 Views
19 Pages

High Resolution Brillouin Sensing of Micro-Scale Structures

  • Atiyeh Zarifi,
  • Birgit Stiller,
  • Moritz Merklein and
  • Benjamin J. Eggleton

11 December 2018

Brillouin distributed measurement techniques have been extensively developed for structural health monitoring using fibre optic nerve systems. The recent advancement in the spatial resolution capabilities of correlation-based Brillouin distributed te...

  • Article
  • Open Access
4 Citations
4,737 Views
15 Pages

Pulsed UV Laser Processing of Carbosilane and Silazane Polymers

  • Samuel Clark Ligon,
  • Gurdial Blugan and
  • Jakob Kuebler

24 January 2019

Freestanding SiCNO ceramic pieces with sub-mm features were produced by laser crosslinking of carbosilane and silazane polymer precursors followed by pyrolysis in inert atmosphere. Three different pulsed UV laser systems were investigated, and the in...

  • Article
  • Open Access
8 Citations
3,809 Views
19 Pages

Impact of Sparse Benthic Life on Seafloor Roughness and High-Frequency Acoustic Scatter

  • Mischa Schönke,
  • Lars Wiesenberg,
  • Inken Schulze,
  • Dennis Wilken,
  • Alexander Darr,
  • Svenja Papenmeier and
  • Peter Feldens

Quantitative acoustic marine habitat mapping needs to consider the impact of macrobenthic organisms on backscatter data. However, the sensitivity of hydroacoustic systems to epibenthic life is poorly constrained. This study explores the impact of a b...

  • Article
  • Open Access
9 Citations
4,410 Views
17 Pages

High-Resolution Structure-from-Motion for Quantitative Measurement of Leading-Edge Roughness

  • Mikkel Schou Nielsen,
  • Ivan Nikolov,
  • Emil Krog Kruse,
  • Jørgen Garnæs and
  • Claus Brøndgaard Madsen

31 July 2020

Over time, erosion of the leading edge of wind turbine blades increases the leading-edge roughness (LER). This may reduce the aerodynamic performance of the blade and hence the annual energy production of the wind turbine. As early detection is key f...

  • Article
  • Open Access
1 Citations
3,785 Views
22 Pages

Haptic Manipulation of 3D Scans for Geometric Feature Enhancement

  • Sri Harsha Turlapati,
  • Dino Accoto and
  • Domenico Campolo

12 April 2021

Localisation of geometric features like holes, edges, slots, etc. is vital to robotic planning in industrial automation settings. Low-cost 3D scanners are crucial in terms of improving accessibility, but pose a practical challenge to feature localisa...

  • Article
  • Open Access
3 Citations
1,471 Views
10 Pages

M 1-92: The Death of an AGB Star Told by Its Isotopic Ratios

  • Elisa Masa,
  • Javier Alcolea,
  • Miguel Santander-García,
  • Valentín Bujarrabal,
  • Carmen Sánchez Contreras and
  • Arancha Castro-Carrizo

10 October 2024

Ongoing improvements in the sensitivity of sub-mm- and mm-range interferometers and single-dish radio telescopes allow for the increasingly detailed study of AGB and post-AGB objects in molecular species other than CO12 and CO13. With a new update in...

  • Feature Paper
  • Article
  • Open Access
9 Citations
3,457 Views
17 Pages

The Role of the Large Millimeter Telescope in Black Hole Science with the Next-Generation Event Horizon Telescope

  • Sandra Bustamante,
  • Lindy Blackburn,
  • Gopal Narayanan,
  • F. Peter Schloerb and
  • David Hughes

21 December 2022

The landmark black hole images recently taken by the Event Horizon Telescope (EHT) have allowed the detailed study of the immediate surroundings of supermassive black holes (SMBHs) via direct imaging. These tantalizing early results motivate an expan...

  • Article
  • Open Access
23 Citations
3,769 Views
26 Pages

Comprehensive Analysis of Tumour Sub-Volumes for Radiomic Risk Modelling in Locally Advanced HNSCC

  • Stefan Leger,
  • Alex Zwanenburg,
  • Karoline Leger,
  • Fabian Lohaus,
  • Annett Linge,
  • Andreas Schreiber,
  • Goda Kalinauskaite,
  • Inge Tinhofer,
  • Nika Guberina and
  • Steffen Löck
  • + 13 authors

19 October 2020

Imaging features for radiomic analyses are commonly calculated from the entire gross tumour volume (GTVentire). However, tumours are biologically complex and the consideration of different tumour regions in radiomic models may lead to an improved out...

  • Article
  • Open Access
4 Citations
3,906 Views
21 Pages

31 January 2022

A subpopulation of neurons is less vulnerable against iron-induced oxidative stress and neurodegeneration. A key feature of these neurons is a special extracellular matrix composition that forms a perineuronal net (PN). The PN has a high affinity to...

  • Article
  • Open Access
316 Views
31 Pages

25 December 2025

Although RGB images contain rich details, they lack 3D depth information. Depth data, while providing spatial positioning, is often affected by noise and suffers from sparsity or missing data at key feature points, leading to low accuracy and high co...

  • Article
  • Open Access
39 Citations
4,191 Views
22 Pages

Fractal Loaded, Novel, and Compact Two- and Eight-Element High Diversity MIMO Antenna for 5G Sub-6 GHz (N77/N78 and N79) and WLAN Applications, Verified with TCM Analysis

  • Tathababu Addepalli,
  • Maragani Satish Kumar,
  • Chandrasekhar Rao Jetti,
  • Naveen Kumar Gollamudi,
  • Bandi Kiran Kumar and
  • Jayshri Kulkarni

14 February 2023

A novel compact fractal loaded two- and eight-element multiple input multiple output (MIMO) with strong diversity is designed for 5G Sub 6 GHz and WLAN applications. The suggested antenna is designed and manufactured on inexpensive FR4 dielectric mat...

  • Letter
  • Open Access
1 Citations
2,821 Views
13 Pages

27 November 2020

The Bessel–Gauss beam has outstanding features, such as long depth of focus (DOF) and super resolution for nondestructive imaging inspection. However, most approaches for generating a nondiffractive beam have mainly focused on extending the DOF...

  • Article
  • Open Access
1,157 Views
23 Pages

Optimization of Fused Deposition Modeling (FDM) Process for Small-Scale PEEK Medical Devices

  • AmirDanial Azimi,
  • Leila Ladani,
  • Jafar Razmi,
  • David G. Lott and
  • Brent A. Chang

Additive manufacturing (AM) of polyetheretherketone (PEEK) offers a promising route for producing lightweight, biocompatible, and patient-specific medical implants with complex geometries. This study investigates and optimizes fused deposition modeli...

  • Article
  • Open Access
247 Views
17 Pages

15 January 2026

The extraction of the light stripe center is a pivotal step in line-structured light vision measurement. This paper addresses a key challenge in the online measurement of train wheel treads, where the diverse and complex profile characteristics of th...

  • Article
  • Open Access
2 Citations
2,914 Views
20 Pages

21 March 2023

In this manuscript, a compact electromagnetic dual actuation positioning system (CEDAPS) based on the Lorentz force principle that features a 10 mm range and nanometer-scale resolution with flexure guides is presented. Firstly, the stiffness of the f...

  • Feature Paper
  • Article
  • Open Access
24 Citations
6,433 Views
14 Pages

A Compact Sub-GHz Wide Tunable Antenna Design for IoT Applications

  • Rifaqat Hussain,
  • Saad I. Alhuwaimel,
  • Abdullah M. Algarni,
  • Khaled Aljaloud and
  • Niamat Hussain

This work presents a compact meandered loop slot-line 5G antenna for Internet of Things (IoT) applications. Recently, sub-gigahertz (sub-GHz) IoT technology is widely spreading. It enables long-range communications with low power consumption. The pro...

  • Article
  • Open Access
7 Citations
2,751 Views
10 Pages

Primary Mucosal Melanoma: Clinical Experience from a Single Italian Center

  • Rosa Falcone,
  • Sofia Verkhovskaia,
  • Francesca Romana Di Pietro,
  • Giulia Poti,
  • Tonia Samela,
  • Maria Luigia Carbone,
  • Maria Francesca Morelli,
  • Albina Rita Zappalà,
  • Zorika Christiana di Rocco and
  • Federica De Galitiis
  • + 4 authors

22 January 2024

(1) Background: Mucosal melanoma (MM) is a rare tumor, accounting for about 1% of all diagnosed melanomas. The etiology and pathogenesis of this tumor are unknown. It is characterized by an aggressive phenotype with poor prognosis and a low response...

  • Article
  • Open Access
6 Citations
2,855 Views
23 Pages

Symmetric Engineered High Polarization-Insensitive Double Negative Metamaterial Reflector for Gain and Directivity Enhancement of Sub-6 GHz 5G Antenna

  • Md. Mhedi Hasan,
  • Mohammad Tariqul Islam,
  • Md. Moniruzzaman,
  • Mohamed S. Soliman,
  • Ahmed S. Alshammari,
  • Iman I. M. Abu Sulayman,
  • Md. Samsuzzaman and
  • Md. Shabiul Islam

18 August 2022

A symmetric engineered high polarization-insensitive double negative (DNG) metamaterial (MM) reflector with frequency tunable features for fifth-generation (5G) antenna gain and directivity enhancement is proposed in this paper. Four identical unique...

  • Article
  • Open Access
2 Citations
2,661 Views
16 Pages

Compact Sub 6 GHz Slot Multiantenna System for 5G Laptops

  • Shu-Chuan Chen,
  • Chang-Sheng Wu,
  • Shao-Hung Cheng and
  • Chih-Chung Lin

9 March 2023

A sub 6 GHz dual-band closed-slot multiantenna system for 5G laptops is proposed in this paper. It was installed in a clearance space, with dimensions og 217 × 3 mm2 and 1 mm away from the upper edge of the screen ground plane. The dimensions o...

  • Article
  • Open Access
4 Citations
1,680 Views
14 Pages

10 December 2023

In this article, a miniature eight-port multiple-input multiple-output (MIMO) antenna array is proposed for fifth-generation (5G) sub-6 GHz handset applications. The individual antenna element comprises a radiator shaped like the Chinese character &l...

  • Article
  • Open Access
1 Citations
1,707 Views
15 Pages

Solution of Spatial Transformation Relationship of Similar Ruled Surfaces Based on Registration of Divided Regions

  • Feiyan Han,
  • Zhitao Hu,
  • Longlong He,
  • Xianlong Peng,
  • Manzhi Yang and
  • Chuanwei Zhang

19 October 2022

Since the geometric transformation relationship of similar surfaces with complex features, such as local deformation and curvature changes, is hard to be solved through global registration, this paper proposes a method for solving the spatial transfo...

  • Article
  • Open Access
11 Citations
3,009 Views
18 Pages

Combined Edge Loss UNet for Optimized Segmentation in Total Knee Arthroplasty Preoperative Planning

  • Luca Marsilio,
  • Andrea Moglia,
  • Matteo Rossi,
  • Alfonso Manzotti,
  • Luca Mainardi and
  • Pietro Cerveri

Bone segmentation and 3D reconstruction are crucial for total knee arthroplasty (TKA) surgical planning with Personalized Surgical Instruments (PSIs). Traditional semi-automatic approaches are time-consuming and operator-dependent, although they prov...

  • Article
  • Open Access
6 Citations
3,205 Views
20 Pages

Preliminary Model-Based Evaluation of Water Conservation Strategies in a Semi-Arid Urban Zone

  • Marcelino Antonio Zúñiga-Estrada,
  • Liliana Lizárraga-Mendiola,
  • Carlos Alfredo Bigurra-Alzati,
  • Sergio Esteban Aldana-Alonso,
  • Jorge Santiago Ramírez-Núñez and
  • Gabriela A. Vázquez-Rodríguez

8 January 2022

The U.S. Environmental Protection Agency stormwater management model was applied to a semi-arid urban micro watershed. The sub-catchment’s current features were modeled as scenario A, while the insertion of a set of LID technologies (rain barre...

  • Article
  • Open Access
4 Citations
4,159 Views
15 Pages

Clinical and Radiologic Features Together Better Predict Lung Nodule Malignancy in Patients with Soft-Tissue Sarcoma

  • Cecilia Tetta,
  • Antonio Giugliano,
  • Laura Tonetti,
  • Michele Rocca,
  • Alessandra Longhi,
  • Francesco Londero,
  • Gianmarco Parise,
  • Orlando Parise,
  • Linda Renata Micali and
  • Sandro Gelsomino
  • + 2 authors

23 April 2020

We test the hypothesis that a model including clinical and computed tomography (CT) features may allow discrimination between benign and malignant lung nodules in patients with soft-tissue sarcoma (STS). Seventy-one patients with STS undergoing their...

  • Article
  • Open Access
14 Citations
4,750 Views
15 Pages

3D-Printed Miniature Robots with Piezoelectric Actuation for Locomotion and Steering Maneuverability Applications

  • Víctor Ruiz-Díez,
  • José Luis García-Caraballo,
  • Jorge Hernando-García and
  • José Luis Sánchez-Rojas

20 December 2021

The miniaturization of robots with locomotion abilities is a challenge of significant technological impact in many applications where large-scale robots have physical or cost restrictions. Access to hostile environments, improving microfabrication pr...

  • Communication
  • Open Access
52 Citations
4,098 Views
10 Pages

A Compact MIMO Antenna with Improved Isolation for ISM, Sub-6 GHz, and WLAN Application

  • Batchingis Bayarzaya,
  • Niamat Hussain,
  • Wahaj Abbas Awan,
  • Md. Abu Sufian,
  • Anees Abbas,
  • Domin Choi,
  • Jaemin Lee and
  • Nam Kim

20 August 2022

This paper presents a compact two-element MIMO antenna with improved isolation for triple-band applications. The antenna consists of two radiating elements with the shared ground plane and a novel decoupling structure. Each antenna element has three...

  • Article
  • Open Access
14 Citations
4,004 Views
29 Pages

8 December 2018

The 2001 Mw7.8 Kokoxili earthquake, which occurred in the north Tibetan Plateau, ruptured ~400 km of the westernmost portion of the Kunlun fault and produced significant time-dependent postseismic deformation over a large area around the rupture zone...

  • Article
  • Open Access
4 Citations
2,210 Views
25 Pages

21 June 2025

To address the inefficiencies and limited spatial resolution of traditional single-point monitoring techniques, this study proposes a multi-scale analysis method that integrates the Multi-Scale Model-to-Model Cloud Comparison (M3C2) algorithm with le...

  • Article
  • Open Access
14 Citations
3,760 Views
13 Pages

Analysis of Deformation Behaviour and Residual Stress in Rotary Swaged Cu/Al Clad Composite Wires

  • Lenka Kunčická,
  • Adéla Macháčková,
  • Ludmila Krátká and
  • Radim Kocich

23 October 2019

Both copper and aluminum are widely applicable throughout a variety of industrial and commercial branches, however, joining them in a composite provides the possibility of combining all their advantageous properties in one material. This study invest...

  • Article
  • Open Access
13 Citations
3,985 Views
25 Pages

4 September 2023

Despite significant advancements in remote sensing object tracking (RSOT) in recent years, achieving accurate and continuous tracking of tiny-sized targets remains a challenging task due to similar object interference and other related issues. In thi...

  • Article
  • Open Access
6 Citations
3,165 Views
13 Pages

25 August 2021

Gold nanoparticles (AuNPs) are used experimentally for non-invasive in vivo Raman monitoring because they show a strong absorbance in the phototherapeutic window (650–850 nm), a feature that is accompanied by a particle size in excess of 100 nm. Howe...

  • Article
  • Open Access
17 Citations
3,510 Views
20 Pages

Glucose Enhances Pro-Tumorigenic Functions of Mammary Adipose-Derived Mesenchymal Stromal/Stem Cells on Breast Cancer Cell Lines

  • Maria Rosaria Ambrosio,
  • Giusy Mosca,
  • Teresa Migliaccio,
  • Domenico Liguoro,
  • Gisella Nele,
  • Fabrizio Schonauer,
  • Francesco D’Andrea,
  • Federica Liotti,
  • Nella Prevete and
  • Pietro Formisano
  • + 6 authors

3 November 2022

Adiposity and diabetes affect breast cancer (BC) progression. We addressed whether glucose may affect the interaction between mammary adipose tissue-derived mesenchymal stromal/stem cells (MAT-MSCs) and BC cells. Two-dimensional co-cultures and spher...

  • Article
  • Open Access
3 Citations
2,058 Views
21 Pages

11 May 2025

Traditional offline programming has limitations for large parts with significant machining or assembly deviations. This study proposes a 3D scanning-assisted method that generates accurate STereoLithography (STL) models and enables multi-layer multi-...

  • Article
  • Open Access
1,466 Views
24 Pages

28 January 2025

This study addresses the unique challenge of the partition walls in subway stations, featuring high height, fire prevention, and located outside the main frames, by introducing a confined autoclaved aerated concrete (AAC) panel wall system. Different...

  • Article
  • Open Access
6 Citations
5,465 Views
19 Pages

A Measurement Method for Large Parts Combining with Feature Compression Extraction and Directed Edge-Point Criterion

  • Wei Liu,
  • Yang Zhang,
  • Fan Yang,
  • Peng Gao,
  • Zhiguang Lan,
  • Zhenyuan Jia and
  • Hang Gao

26 December 2016

High-accuracy surface measurement of large aviation parts is a significant guarantee of aircraft assembly with high quality. The result of boundary measurement is a significant parameter for aviation-part measurement. This paper proposes a measuremen...

  • Article
  • Open Access
14 Citations
3,083 Views
19 Pages

Deregulated Expression of Immune Checkpoints on Circulating CD4 T Cells May Complicate Clinical Outcome and Response to Treatment with Checkpoint Inhibitors in Multiple Myeloma Patients

  • Anna Kulikowska de Nałęcz,
  • Lidia Ciszak,
  • Lidia Usnarska-Zubkiewicz,
  • Irena Frydecka,
  • Edyta Pawlak,
  • Magdalena Szmyrka and
  • Agata Kosmaczewska

27 August 2021

Unlike solid-tumor patients, a disappointingly small subset of multiple myeloma (MM) patients treated with checkpoint inhibitors derive clinical benefits, suggesting differential participation of inhibitory receptors involved in the development of T-...

  • Article
  • Open Access
921 Views
19 Pages

17 August 2025

Ultrasound probe calibration is crucial for precise spatial mapping in ultrasound-guided surgical navigation and free-hand 3D ultrasound imaging as it establishes the rigid-body transformation between the ultrasound image plane and an external tracki...

  • Article
  • Open Access

A Compact Aperture-Slot Antipodal Vivaldi Antenna for GPR Systems

  • Feng Shen,
  • Ninghe Yang,
  • Chao Xia,
  • Tong Wan and
  • Jiaheng Kang

26 January 2026

Compact antennas with ultra-wideband operation and stable radiation are essential for portable and airborne ground-penetrating radar (GPR), yet miniaturization in the sub 3 GHz region is strongly constrained by the wavelength-driven aperture requirem...

  • Article
  • Open Access
1 Citations
3,206 Views
19 Pages

We introduce a highly efficient 48-channel ultrasound beamforming system ideal for ultrasound endoscopy applications. The system includes a transmitter and a receiver that allows for low-area, high-resolution imaging acquisition. The transmitter uses...

  • Article
  • Open Access
789 Views
21 Pages

19 June 2025

The multi-station registration of concrete-filled steel tubular (CFST) arch rib segments poses significant challenges due to structural complexity and environmental constraints during terrestrial laser scanning, requiring multi-angle acquisition for...

  • Article
  • Open Access
709 Views
11 Pages

Rapid Fabrication of Large-Area Anti-Reflective Microholes Using MHz Burst Mode Femtosecond Laser Bessel Beams

  • Yulong Ding,
  • Cong Wang,
  • Zheng Gao,
  • Xiang Jiang,
  • Shiyu Wang,
  • Xianshi Jia,
  • Linpeng Liu and
  • Ji’an Duan

15 November 2025

Femtosecond laser has been widely utilized in functional microstructural surfaces for applications such as anti-reflection, radiative cooling, and self-cleaning. However, achieving high-efficiency manufacturing of high-consistency functional microstr...

  • Article
  • Open Access
2 Citations
2,982 Views
16 Pages

10 February 2025

This paper introduces a high-resolution 77–81 GHz mmWave Synthetic Aperture Radar (SAR) imaging methodology integrating low-cost hardware with modified radar signal characteristics specifically for NDT applications. The system is optimized to d...

  • Article
  • Open Access
5 Citations
4,488 Views
15 Pages

Chemical (Alkali) Burn-Induced Neurotrophic Keratitis Model in New Zealand Rabbit Investigated Using Medical Clinical Readouts and In Vivo Confocal Microscopy (IVCM)

  • Mehak Vohra,
  • Abha Gour,
  • Jyoti Rajput,
  • Bharti Sangwan,
  • Monika Chauhan,
  • Kartik Goel,
  • Ajith Kamath,
  • Umang Mathur,
  • Arun Chandru and
  • Anil Tiwari
  • + 2 authors

22 February 2024

Purpose: Chemical eye injury is an acute emergency that can result in vision loss. Neurotrophic keratitis (NK) is the most common long-term manifestation of chemical injury. NK due to alkali burn affects ocular surface health and is one of its most c...

  • Article
  • Open Access
2 Citations
825 Views
27 Pages

13 June 2025

This paper presents a three-degrees-of-freedom origami parallel robot that is free from parasitic motion. This robot is designed to achieve one translational and two rotational motions within its workspace, enabling precise orientation about a fixed...

  • Article
  • Open Access
2 Citations
1,676 Views
13 Pages

21 July 2024

This study proposes wide-band frequency selective surfaces (FSS) with polarization-independent characteristics that are tailored for IoT applications. The design consists of two different layers with band-stop characteristics that target key frequenc...

  • Article
  • Open Access
5 Citations
2,372 Views
12 Pages

Thin Glass Micro Force Plate Supported by Planar Spiral Springs for Measuring Minute Forces

  • Taisei Kiriyama,
  • Kenichiro Shimazaki,
  • Rihachiro Nakashima and
  • Hidetoshi Takahashi

16 May 2023

Microforce plates are indispensable tools for quantitatively evaluating the behavior of small objects such as tiny insects or microdroplets. The two main measurement principles for microforce plates are: the formation of strain gauges on the beam tha...

  • Article
  • Open Access
622 Views
21 Pages

18 September 2025

This study presents a high-fidelity image acquisition method for asphalt film structure to address the challenge of capturing mesoscale structures, especially fine mineral filler and asphalt mastic. The method is particularly applied to the analysis...

  • Article
  • Open Access
26 Citations
4,130 Views
14 Pages

A Low Profile Ultra-Wideband Antenna with Reconfigurable Notch Band Characteristics for Smart Electronic Systems

  • Abir Zaidi,
  • Wahaj Abbas Awan,
  • Adnan Ghaffar,
  • Mohammed S. Alzaidi,
  • Mohammad Alsharef,
  • Dalia H. Elkamchouchi,
  • Sherif S. M. Ghoneim and
  • Turki E. A. Alharbi

22 October 2022

This study describes the design and implementation of a small printed ultra-wideband (UWB) antenna for smart electronic systems with on-demand adjustable notching properties. A contiguous sub-band between 3–4.1 GHz, 4.45–6.5 GHz, or for both bands co...

  • Article
  • Open Access
4 Citations
1,682 Views
22 Pages

A Dual-Band Flexible MIMO Array Antenna for Sub-6 GHz 5G Communications

  • Deepthi Mariam John,
  • Tanweer Ali,
  • Shweta Vincent,
  • Sameena Pathan,
  • Jaume Anguera,
  • Bal Virdee,
  • Rajiv Mohan David,
  • Krishnamurthy Nayak and
  • Sudheesh Puthenveettil Gopi

5 June 2025

This paper presents a novel dual-band flexible antenna, uniquely designed and extended to array as well as MIMO configurations for the Sub-6 GHz band. The single-element monopole antenna features a modified rectangular radiator with two L-strips and...

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