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206 Results Found

  • Article
  • Open Access
2 Citations
5,945 Views
13 Pages

A Novel Method and Mechanism for Micro-Sphere Singularization

  • Gianmauro Fontana,
  • Serena Ruggeri,
  • Luca Altissimo,
  • Giovanni Legnani and
  • Irene Fassi

8 September 2017

The paper presents an innovative mechanism for the singularization of micro-spheres, which can be effectively employed in a diverse range of robotized applications in micro-electronics and micro-mechanics. Many miniaturized devices are currently bein...

  • Article
  • Open Access
30 Citations
10,251 Views
18 Pages

25 June 2014

A new method to fabricate an integrated optical fiber micro-sphere with a diameter within 100 µm, based on the optical fiber tapering technique and the Taguchi method is proposed. Using a 125 µm diameter single-mode (SM) optical fiber, an optical fib...

  • Article
  • Open Access
21 Citations
7,011 Views
12 Pages

Solvothermal Synthesis of a Hollow Micro-Sphere LiFePO4/C Composite with a Porous Interior Structure as a Cathode Material for Lithium Ion Batteries

  • Yang Liu,
  • Jieyu Zhang,
  • Ying Li,
  • Yemin Hu,
  • Wenxian Li,
  • Mingyuan Zhu,
  • Pengfei Hu,
  • Shulei Chou and
  • Guoxiu Wang

3 November 2017

To overcome the low lithium ion diffusion and slow electron transfer, a hollow micro sphere LiFePO4/C cathode material with a porous interior structure was synthesized via a solvothermal method by using ethylene glycol (EG) as the solvent medium and...

  • Article
  • Open Access
11 Citations
8,354 Views
20 Pages

Aluminum Coated Micro Glass Spheres to Increase the Infrared Reflectance

  • Laura Schwinger,
  • Sebastian Lehmann,
  • Lukas Zielbauer,
  • Benedikt Scharfe and
  • Thorsten Gerdes

12 March 2019

The reflective properties of micro glass spheres (MGS) such as Solid Micro Glass Spheres (SMGS, “glass beads”) and Micro Hollow Glass Spheres (MHGS, “glass bubbles”) are utilized in various applications, for example, as retro-...

  • Article
  • Open Access
525 Views
32 Pages

The proliferation of the Social Internet of Things (SIoT) necessitates robust and scalable trust management systems to ensure secure and reliable interactions among heterogeneous devices. However, existing trust management models often lack scalabili...

  • Article
  • Open Access
5 Citations
2,780 Views
7 Pages

Micro-Sphere PDMS for Enhancing Light Extraction in Organic Light-Emitting Devices

  • Eun-Jeong Bae,
  • Hyeong-Kyu Maeng,
  • Ji-Soo Shin,
  • Dong-Wook Park,
  • Young-Wook Park and
  • Dong-Hyun Baek

10 June 2022

We present a micro-sphere PDMS film to improve the external quantum efficiency (EQE) in OLEDs. The micro-sphere PDMS film was fabricated with the breath figure (BF) and replica molding process. The polymer template was prepared through stabilization...

  • Brief Report
  • Open Access
5 Citations
2,775 Views
8 Pages

27 February 2021

Two studies were conducted to determine the stability of vitamin K3 (VK3) in swine diets during extrusion or pelleting. The two sources were menadione sodium bisulfite (MSB) and menadione nicotinamide bisulfite (MNB), and the three formulations were...

  • Article
  • Open Access
7 Citations
9,143 Views
9 Pages

Thermal Conductivity Computations of Sintered Hollow Sphere Structures

  • Christoph Veyhl,
  • Thomas Fiedler,
  • Tobias Herzig,
  • Andreas Öchsner,
  • Timo Bernthaler,
  • Irina V. Belova and
  • Graeme E. Murch

30 May 2012

The thermal conductivity of sintered hollow sphere structures (HSS) is investigated within the scope of this paper. For this purpose, finite element analyses based on micro-computed tomography images are performed on HSS structures. The complex geome...

  • Review
  • Open Access
20 Citations
5,972 Views
38 Pages

27 August 2019

Micro/nanostructured spherical materials have been widely explored for electrochemical energy storage due to their exceptional properties, which have also been summarized based on electrode type and material composition. The increased complexity of s...

  • Article
  • Open Access
3 Citations
3,358 Views
17 Pages

16 August 2021

Inserting porous media into the micro-scale combustor space could enhance heat recirculation from the flame zone, and could thus extend the flammability limits and improve flame stability. In the context of porous micro-combustors, the pore size is c...

  • Review
  • Open Access
20 Citations
8,120 Views
33 Pages

Hollow Silica Nano and Micro Spheres with Polystyrene Templating: A Mini-Review

  • Siddharth Gurung,
  • Francesco Gucci,
  • Gareth Cairns,
  • Iva Chianella and
  • Glenn J. T. Leighton

1 December 2022

Synthesis of monodisperse hollow silica nanospheres, especially using a hard template route, has been shown to be successful, but a high yield is needed for this strategy to be used on an industrial scale. On the other hand, there is a research gap i...

  • Article
  • Open Access
47 Citations
6,361 Views
19 Pages

Effect of Temperature on the Physical, Electro-Chemical and Adsorption Properties of Carbon Micro-Spheres Using Hydrothermal Carbonization Process

  • Zaira Zaman Chowdhury,
  • Bagavathi Krishnan,
  • Suresh Sagadevan,
  • Rahman Faizur Rafique,
  • Nor Aliya Binti Hamizi,
  • Yasmin Abdul Wahab,
  • Ali Akbar Khan,
  • Rafie Bin Johan,
  • Y. Al-douri and
  • Syed Tawab Shah
  • + 1 author

6 August 2018

This research deals with the effect of the temperature on the physical, thermal, electrochemical, and adsorption properties of the carbon micro-spheres using hydrothermal carbonization (HTC). Until recently, limited research has been conducted regard...

  • Article
  • Open Access
15 Citations
4,959 Views
17 Pages

Sandwich-Type DNA Micro-Optode Based on Gold–Latex Spheres Label for Reflectance Dengue Virus Detection

  • Jeningsih,
  • Ling Ling Tan,
  • Alizar Ulianas,
  • Lee Yook Heng,
  • Nur-Fadhilah Mazlan,
  • Nur Diyana Jamaluddin,
  • Nurul Yuziana Mohd. Yusof,
  • Bahariah Khalid and
  • Goh Choo Ta

25 March 2020

A DNA micro-optode for dengue virus detection was developed based on the sandwich hybridization strategy of DNAs on succinimide-functionalized poly(n-butyl acrylate) (poly(nBA-NAS)) microspheres. Gold nanoparticles (AuNPs) with an average diameter of...

  • Review
  • Open Access
9 Citations
4,143 Views
22 Pages

13 October 2021

Conventional transarterial embolization (cTACE) has been proven to be effective for intermediate stage hepatocellular carcinoma (HCC), with a recent systematic review showing an overall survival (OS) of 19.4 months. Nevertheless, due to the rapid dev...

  • Article
  • Open Access
1,191 Views
19 Pages

Establishment and Molecular Characterization of a Human Stem Cell Line from a Primary Cell Culture Obtained from an Ectopic Calcified Lesion of a Tumoral Calcinosis Patient Carrying a Novel GALNT3 Mutation

  • Simone Donati,
  • Gaia Palmini,
  • Cinzia Aurilia,
  • Irene Falsetti,
  • Francesca Marini,
  • Gianna Galli,
  • Roberto Zonefrati,
  • Teresa Iantomasi,
  • Lorenzo Margheriti and
  • Maria Luisa Brandi
  • + 4 authors

24 February 2025

Background/Objectives: Tumoral calcinosis (TC) is an extremely rare inherited disease characterized by multilobulated, dense ectopic calcified masses, usually in the periarticular soft tissue regions. In a previous study, we isolated a primary cell l...

  • Article
  • Open Access
5 Citations
3,027 Views
10 Pages

Multi-spheres adsorptive microextraction using powdered activated carbons (ACs) was studied as a novel enrichment approach, followed by liquid desorption and high-performance liquid chromatography with diode array detection (MSAµE(AC)-LD/HPLC-D...

  • Article
  • Open Access
1,823 Views
20 Pages

24 December 2024

Micro-nozzles are essential for enabling precise satellite attitude control and orbital maneuvers. Accurate prediction of performance parameters, including thrust and specific impulse, is critical, necessitating careful design of these nozzles. Given...

  • Article
  • Open Access
24 Citations
2,511 Views
12 Pages

Formulation and In Vitro Evaluation of Rifampicin Loaded Porous Microspheres

  • Satish Balakrishna BHISE,
  • Avinash Bhanudas MORE and
  • Rajkumar MALAYANDI

18 April 2010

Rifampicin (RIF) is a major component in fixed dose combination therapy for the treatment of tuberculosis. RIF has low solubility and high permeability with high dose and hence it is classified as class II drug in Biopharmaceutical Classification Sys...

  • Feature Paper
  • Review
  • Open Access
132 Citations
15,147 Views
34 Pages

Composite and Nanocomposite Metal Foams

  • Isabel Duarte and
  • José M. F. Ferreira

28 January 2016

Open-cell and closed-cell metal foams have been reinforced with different kinds of micro- and nano-sized reinforcements to enhance their mechanical properties of the metallic matrix. The idea behind this is that the reinforcement will strengthen the...

  • Article
  • Open Access
20 Citations
6,892 Views
14 Pages

A Novel SimpleDrop Chip for 3D Spheroid Formation and Anti-Cancer Drug Assay

  • Xiaoli Liu,
  • Huichao Lin,
  • Jiaao Song,
  • Taiyi Zhang,
  • Xiaoying Wang,
  • Xiaowen Huang and
  • Chengyun Zheng

10 June 2021

Cell culture is important for the rapid screening of anti-cancer drug candidates, attracting intense interest. Traditional 2D cell culture has been widely utilized in cancer biological research. However, 3D cellular spheroids are able to recapitulate...

  • Article
  • Open Access
20 Citations
10,191 Views
16 Pages

10 September 2019

Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal malignancies, and thus better understanding of its molecular pathology is crucial for us to devise more effective treatment of this deadly disease. As cancer cell line remains a conven...

  • Article
  • Open Access
28 Citations
6,020 Views
12 Pages

Assessment of Hydroxyapatite Nanospheres Incorporated Dentin Adhesive. A SEM/EDX, Micro-Raman, Microtensile and Micro-Indentation Study

  • Rana S Al-Hamdan,
  • Basil Almutairi,
  • Hiba F Kattan,
  • Saad Alresayes,
  • Tariq Abduljabbar and
  • Fahim Vohra

3 December 2020

Hydroxyapatite (HA) delivery with resin adhesives has potential for re-mineralization of resin–dentin interface. The study prepared an adhesive containing HA and confirmed its presence in adhesive and interaction with the dentin using scanning...

  • Article
  • Open Access
1 Citations
1,296 Views
12 Pages

High Resolution Imaging Using Micro-Objectives Fabricated by 2-Photon-Polymerization

  • Fabian Thiemicke,
  • Mostafa Agour,
  • Ralf B. Bergmann and
  • Claas Falldorf

7 August 2025

We experimentally demonstrate high-resolution imaging using micro-objectives fabricated by two-photon polymerization (2PP) lithography, highlighting its potential as a flexible and precise fabrication method. The 2PP manufacturing process offers the...

  • Article
  • Open Access
26 Citations
6,268 Views
12 Pages

A High Temperature Drop-On-Demand Droplet Generator for Metallic Melts

  • Saeedeh Imani Moqadam,
  • Lutz Mädler and
  • Nils Ellendt

17 July 2019

In this study we present the design and functionality of a pneumatic drop-on-demand droplet generator that produces metallic micro particles with a size range of 300 µm to 1350 µm at high temperatures of up to 1600 °C. Molten metal dr...

  • Article
  • Open Access
1 Citations
1,478 Views
18 Pages

Mineralogical and Micro-Computer Tomographic (μCT) Texture Investigations of Egyptian Blue Spheres (Aguntum, East Tyrol; Retznei and Wagna, Flavia Solva, South Styria)

  • Gerald Degenhart,
  • Julius Heinemann,
  • Peter Tropper,
  • Alexandra Rodler-Rørbo,
  • Bianca Zerobin,
  • Martin Auer and
  • Gert Goldenberg

15 March 2025

Egyptian Blue was the first synthetic pigment by humankind. It contains of cuprorivaite, which is a calcium-copper-silicate (CaCuSi4O10). This study reports the results of a mineralogical and computer tomographic study of Egyptian Blue finds from Agu...

  • Article
  • Open Access
5 Citations
5,437 Views
11 Pages

This paper investigates the possible chemical changes in polydimethylsiloxane (PDMS) caused by two different techniques of fabrication for ultra-sensitive electric field optical sensors. The sensing element is a micro-sphere made from 60:1 PDMS (60 p...

  • Brief Report
  • Open Access
5 Citations
4,019 Views
10 Pages

16 April 2021

Six types of vitamin K3 (VK3); two sources (menadione sodium bisulfite, MSB; menadione nicotinamide bisulfite, MNB), and three different forms (crystal, micro-capsule, and micro-sphere) were used to determine the retention of VK3 in vitamin premixes...

  • Article
  • Open Access
549 Views
21 Pages

Verification of Microprobe Calibration Based on Actual Diameter Measurement of the Probe Tip Sphere

  • So Ito,
  • Daichi Inukai,
  • Takehiro Tomioka,
  • Yasutomo Sugisawa,
  • Kenta Matsumoto and
  • Kazuhide Kamiya

1 December 2025

In three-dimensional measurement using a microprobing system with a micrometric spherical tip, a deviation in the diameter of the probe tip sphere causes measurement errors. In a typical probing system calibration, the effective diameter of the probe...

  • Article
  • Open Access
2 Citations
2,514 Views
12 Pages

27 March 2024

A novel self-assembly approach was employed to produce micro-spherical composite energetic material (EM) comprising 2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane/nitrocellulose (CL-20/NC) via the spray-drying method, with precise control...

  • Article
  • Open Access
16 Citations
4,208 Views
22 Pages

26 September 2019

Optimal gait design is important for micro-organisms and micro-robots that propel themselves in a fluid environment in the absence of external force or torque. The simplest models of shape changes are those that comprise a series of linked-spheres th...

  • Review
  • Open Access
77 Citations
12,659 Views
35 Pages

Spherical Cellulose Micro and Nanoparticles: A Review of Recent Developments and Applications

  • João P. F. Carvalho,
  • Ana C. Q. Silva,
  • Armando J. D. Silvestre,
  • Carmen S. R. Freire and
  • Carla Vilela

17 October 2021

Cellulose, the most abundant natural polymer, is a versatile polysaccharide that is being exploited to manufacture innovative blends, composites, and hybrid materials in the form of membranes, films, coatings, hydrogels, and foams, as well as particl...

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

15 March 2021

Superabsorbent polymer (SAP) particles are primarily applied for absorbing and storing liquids. Here, poly (acrylic acid) (PAA)-based SAP microspheres incorporated with silver nanoparticles (AgNPs) are prepared as an effort to maintain microsphere sh...

  • Article
  • Open Access
3 Citations
3,202 Views
11 Pages

Vanadium Dioxide–Iridium Composite Development: Specific Near Infrared Surface Plasmon Resonance

  • Adrian Ionut Bercea,
  • Corinne Champeaux,
  • Catalin Daniel Constantinescu and
  • Frédéric Dumas-Bouchiat

This work serves as a roadmap for the development of a Vanadium dioxide (VO2)–Iridium composite based on the self-assembly of closely packed colloidal polystyrene microspheres (P-spheres) coupled with a Pulsed Laser Deposition (PLD) process. The self...

  • Article
  • Open Access
60 Citations
6,258 Views
15 Pages

10 December 2020

An experimental adhesive incorporated with different nano-hydroxyapatite (n-HA) particle concentrations was synthesized and analyzed for dentin interaction, micro-tensile bond strength (μTBS), and degree of conversion (DC). n-HA powder (5 wt % and...

  • Article
  • Open Access
8 Citations
5,452 Views
17 Pages

Filling of Irregular Channels with Round Cross-Section: Modeling Aspects to Study the Properties of Porous Materials

  • Yamel Ungson,
  • Larysa Burtseva,
  • Edwin R. Garcia-Curiel,
  • Benjamin Valdez Salas,
  • Brenda L. Flores-Rios,
  • Frank Werner and
  • Vitalii Petranovskii

5 October 2018

The filling of channels in porous media with particles of a material can be interpreted in a first approximation as a packing of spheres in cylindrical recipients. Numerous studies on micro- and nanoscopic scales show that they are, as a rule, not id...

  • Article
  • Open Access
6 Citations
3,897 Views
12 Pages

27 November 2019

The effect of sintering process on the microstructure and the mechanical properties of aluminum syntactic foam were investigated in this study. Two different sintering processes of spark plasma sintering and hot pressing were used. Glass hollow spher...

  • Article
  • Open Access
13 Citations
3,468 Views
11 Pages

1 September 2019

A melt of short semi-flexible polymers with hard-sphere-type non-bonded interaction undergoes a first-order crystallisation transition at lower density than a melt of hard-sphere monomers or a flexible hard-sphere chain. In contrast to the flexible h...

  • Proceeding Paper
  • Open Access
6 Citations
3,368 Views
5 Pages

E-Skin Pressure Sensors Made by Laser Engraved PDMS Molds

  • Andreia dos Santos,
  • Nuno Pinela,
  • Pedro Alves,
  • Rodrigo Santos,
  • Elvira Fortunato,
  • Rodrigo Martins,
  • Hugo Águas and
  • Rui Igreja

12 November 2018

This work describes the production of electronic-skin (e-skin) piezoresistive sensors, which micro-structuration is performed using laser engraved molds. With this fabrication approach, low-cost sensors are easily produced with a tailored performance...

  • Article
  • Open Access
3 Citations
4,304 Views
11 Pages

Localized Defects in Cold Die-Compacted Metal Powders

  • Elisa Torresani,
  • Gloria Ischia and
  • Alberto Molinari

In powder metallurgy (PM), the compaction step is fundamental to determining the final properties of the sintered components. The deformation and defectiveness introduced in the powder material during uniaxial die compaction can be correlated to the...

  • Article
  • Open Access
16 Citations
5,585 Views
13 Pages

Dry Film Resist Laminated Microfluidic System for Electrical Impedance Measurements

  • Yuan Cao,
  • Julia Floehr,
  • Sven Ingebrandt and
  • Uwe Schnakenberg

In micro-electrical-mechanical systems (MEMS), thick structures with high aspect ratios are often required. Dry film photoresist (DFR) in various thicknesses can be easily laminated and patterned using standard UV lithography. Here, we present a thre...

  • Article
  • Open Access
5 Citations
6,680 Views
18 Pages

20 November 2017

In this paper, an assembled cantilever fiber touch trigger probe was developed for three-dimensional measurements of clear microstructures. The probe consists of a shaft assembled vertically to an optical fiber cantilever and a probing sphere located...

  • Article
  • Open Access
5 Citations
2,842 Views
9 Pages

Simulation of Far-Field Light Distribution of Micro-LED Based on Its Structural Parameters

  • Wei Wei,
  • Yiying Chen,
  • Chenxi Wang,
  • Xing Peng,
  • Tang Tang and
  • Zhizhong Chen

12 December 2022

To clarify how micro-LED far-field light distributions differ from Lambertian distributions owing to small-sized-structure effects, the light distribution of a micro-LED was simulated via the ray-tracing method in this study. Specifically, considerin...

  • Article
  • Open Access
21 Citations
6,048 Views
14 Pages

17 August 2018

Hierarchical micro-/mesoporous graphitic carbon spheres (HGCS) with a uniform diameter of ~0.35 μm were synthesized by Fe-catalyzed graphitization of amorphous carbon spheres resultant from hydrothermal carbonization. The HGCS resultant from 3 h a...

  • Article
  • Open Access
18 Citations
5,770 Views
11 Pages

24 November 2017

Micro-carriers are the best known vehicles to transport different kinds of drugs to achieve high impact. In this study, mesoporous magnesium oxide has been harnessed as a micro-carrier to encapsulate the anticancer candidate drug natural-based cubic...

  • Article
  • Open Access
3 Citations
3,074 Views
10 Pages

Elevated Expression of JMJD5 Protein Due to Decreased miR-3656 Levels Contributes to Cancer Stem Cell-Like Phenotypes under Overexpression of Cancer Upregulated Gene 2

  • Natpaphan Yawut,
  • Il-Rae Cho,
  • Phatcharaporn Budluang,
  • Sirichat Kaowinn,
  • Chutima Kaewpiboon,
  • Byeoleun Jeon,
  • Sang-Woo Kim,
  • Ho Young Kang,
  • Min-Kyung Kang and
  • Young-Hwa Chung
  • + 1 author

12 January 2022

Overexpression of cancer upregulated gene (CUG) 2 induces cancer stem cell-like phenotypes, such as enhanced epithelial-mesenchymal transition, sphere formation, and doxorubicin resistance. However, the precise mechanism of CUG2-induced oncogenesis r...

  • Article
  • Open Access
12 Citations
7,002 Views
13 Pages

Plasma-Textured Teflon: Repulsion in Air of Water Droplets and Drag Reduction Underwater

  • Rosa Di Mundo,
  • Francesco Bottiglione,
  • Michele Notarnicola,
  • Fabio Palumbo and
  • Giuseppe Pascazio

A superhydrophobic behavior can be obtained by properly modifying the surface topography of Teflon or other fluorinated polymers having an inherent hydrophobic character. According to this strategy, we have micro/nanotextured Teflon both as plane mat...

  • Article
  • Open Access
21 Citations
8,638 Views
20 Pages

A Micro-Coordinate Measurement Machine (CMM) for Large-Scale Dimensional Measurement of Micro-Slits

  • So Ito,
  • Hirotaka Kikuchi,
  • Yuanliu Chen,
  • Yuki Shimizu,
  • Wei Gao,
  • Kazuhiko Takahashi,
  • Toshihiko Kanayama,
  • Kunmei Arakawa and
  • Atsushi Hayashi

18 May 2016

This paper presents a micro-coordinate measuring machine (micro-CMM) for large-scale dimensional measurement of a micro-slit on a precision die coater by using a shear-mode micro-probe. A glass micro sphere with a nominal diameter of 52.3 μm was atta...

  • Article
  • Open Access
10 Citations
6,095 Views
13 Pages

8 January 2015

A detection method that combines electric field-assisted virus capture on antibody-decorated surfaces with the “fingerprinting” capabilities of micro-Raman spectroscopy is demonstrated for the case of M13 virus in water. The proof-of-principle surfac...

  • Article
  • Open Access
35 Citations
6,688 Views
11 Pages

A PZT Actuated Triple-Finger Gripper for Multi-Target Micromanipulation

  • Tao Chen,
  • Yaqiong Wang,
  • Zhan Yang,
  • Huicong Liu,
  • Jinyong Liu and
  • Lining Sun

24 January 2017

This paper presents a triple-finger gripper driven by a piezoceramic (PZT) transducer for multi-target micromanipulation. The gripper consists of three fingers assembled on adjustable pedestals with flexible hinges for a large adjustable range. Each...

  • Article
  • Open Access
35 Citations
5,458 Views
13 Pages

6 October 2022

Lignin is an indispensable and essential compound present in plants. It is a renewable resource and a green alternative to traditional petroleum energy. The rational utilization of lignin can reduce the environmental damage caused by traditional indu...

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