Article
Engineering, Manufacturing
J. Plog, Y. Jiang, Y. Pan, A. L. Yarin
Summary: By adding an additional electrode to the printhead to generate an electric field, we were able to use Coulomb force to pull extruded ink in the direction of printing, allowing for faster translational speed, thinner trace widths, and improved deposition on rough surfaces without decreasing build height. This electrostatically-assisted direct ink writing technology has shown orders of magnitude faster speed and the capability to print on super-rough surfaces that were previously impossible.
ADDITIVE MANUFACTURING
(2021)
Article
Nanoscience & Nanotechnology
Shoukun Jiang, Zhanxiao Kang, Fu Liu, Jintu Fan
Summary: Electrospinning is widely used in various applications, however, printing pre-designed 2D/3D nanofibrous structures has been challenging due to its jet instability. In this study, a far-field jet writing technique was developed to precisely control the polymer jet using a combination of voltage reduction, electric field adjustment, and passively focusing electrostatic lenses. With optimization of voltages, lens aperture, and lens distance, a precision of approximately 200 μm was achieved, similar to conventional polymer-based 3D printers. This technique enables the printing of 2D/3D nanofibrous structures for enhanced performance in different applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Connor D. Armstrong, Noah Todd, Abdullah T. Alsharhan, David I. Bigio, Ryan D. Sochol
Summary: This study presents a shape-changing nozzle fabricated by PolyJet 3D printing, allowing for the modulation of fiber distribution in polymer matrices during extrusion. Experimental results show that varying nozzle actuation pressure and geometry can influence the swelling behavior of composite materials.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Review
Materials Science, Multidisciplinary
Paula I. P. Soares, Joana Romao, Ricardo Matos, Jorge Carvalho Silva, Joao Paulo Borges
Summary: The design, research, and development of new and improved smart multifunctional devices is a major topic in the agenda for advanced functional materials. Smart materials triggered by external stimuli are seen as having high potential for innovative treatments and improved drug delivery systems.
PROGRESS IN MATERIALS SCIENCE
(2021)
Article
Engineering, Manufacturing
Dharneedar Ravichandran, Weiheng Xu, Mounika Kakarla, Sayli Jambhulkar, Yuxiang Zhu, Kenan Song
Summary: This study introduces a new additive manufacturing mechanism, Multiphase Direct Ink Writing (MDIW), which prints individual lines composed of a desirable number of sublayers by matching the viscosity between polymer solutions and nanoparticle suspensions. The 64-layered structure shows the highest modulus, strength, and energy absorption, enhancing the mechanical properties of composite materials.
ADDITIVE MANUFACTURING
(2021)
Article
Engineering, Biomedical
Elia A. Guzzi, Raffaele Bischof, Dalia Dranseikiene, Dhananjay Deshmukh, Adam Wahlsten, Giovanni Bovone, Stephane Bernhard, Mark W. Tibbitt
Summary: Recent advances in additive manufacturing technologies have enabled the fabrication of complex biological structures with hierarchical organization. The combination of direct ink writing ( DIW) and digital light processing (DLP) allows for improved spatial control over material mechanics, leading to the production of hierarchical biomaterials with user-defined properties at micro- and macro-scales. This multitechnology approach also enables the printing of live cells for biofabrication applications, showcasing its versatility and potential in tissue engineering.
Article
Materials Science, Multidisciplinary
Jia En Aw, Xiang Zhang, Arif Z. Nelson, Leon M. Dean, Mostafa Yourdkhani, Randy H. Ewoldt, Philippe H. Geubelle, Nancy R. Sottos
Summary: The ability to manufacture highly intricate designs is a key advantage of 3D printing. This study utilizes a self-regulative printing process to achieve high-dimensional accuracy by adapting to changes in print speed and environmental conditions.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Engineering, Multidisciplinary
Aamir Shahzad, Ismail Lazoglu
Summary: This paper outlines the current state-of-the-art manufacturing of various ceramics using the DIW technique, highlighting the innovations and challenges associated with this approach.
COMPOSITES PART B-ENGINEERING
(2021)
Review
Materials Science, Multidisciplinary
Gillian F. Hawes, Sarish Rehman, Yverick Rangom, Michael A. Pope
Summary: This article discusses the importance of electrode and device manufacturing advancements in electrochemical energy storage devices and introduces three advanced manufacturing methods. These methods can increase electrode loading, improve electrochemical performance, and add additional functionality such as flexibility and wearability.
INTERNATIONAL MATERIALS REVIEWS
(2023)
Review
Chemistry, Multidisciplinary
Peng Wang, Benjamin Barnes, Zhongjie Huang, Ziyi Wang, Ming Zheng, YuHuang Wang
Summary: For thousands of years, carbon ink has been used for writing and painting, but recent discoveries in nanocarbon materials and advances in large-scale synthesis have allowed for a new generation with advanced functionalities. The combination of multifunctional nanocarbon inks with modern printing technologies is transforming applications like flexible electronics and stimuli-responsive devices.
ADVANCED MATERIALS
(2021)
Review
Engineering, Manufacturing
Ratnesh Raj, Amit Rai Dixit
Summary: This article discusses the application of Direct Ink Writing (DIW) in three-dimensional printing of carbon-based materials. Carbon-based materials have impressive chemical stability, strength, and flexible nanostructure, making them important in 3D printing. The article elaborates on the fundamental requirements of DIW for carbon-doped polymeric inks and describes its application in electronics, medical, and mechanical fields.
3D PRINTING AND ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Multidisciplinary
Dipankar Behera, Michael Cullinan
Summary: This paper discusses the state-of-the-art in microscale additive manufacturing processes and their scalability challenges. It focuses on Direct Ink Write/Jet Processes and the key challenges to high throughput 3D microfabrication. The paper identifies these challenges and suggests potential approaches to eliminate them for fabricating true 3D parts at high throughputs.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Zhenhua Wang, Boyu Zhang, Weicheng Cui, Nanjia Zhou
Summary: Pneumatically actuated soft robots have gained significant attention for their potential in enhancing human-machine interactions. Challenges remain in manufacturing soft robots with complex 3D structures, but a novel multi-material ink writing method has been introduced to overcome limitations of traditional fabrication technologies and expand additive manufacturing capabilities for soft robotics.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Yixuan Wang, Yun Liu, Xingtian Hao, Xingping Zhou, Haiyan Peng, Zhihao Shen, Ivan I. Smalyukh, Xiaolin Xie, Bai Yang
Summary: This paper demonstrates a versatile and robust approach by anchoring flexible alkyl chains on the surface of carbon dots, enabling the solvent-free processing and direct ink writing of liquid crystal carbon dots. The liquid crystalline phase-transition temperature can be adjusted by varying the alkyl chain length, and the resulting objects exhibit highly emissive fluorescence. This approach not only represents a fundamental advance by imparting liquid crystal functions to carbon dots, but also holds great promise for technological utility in advanced manufacturing.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yixuan Wang, Yun Liu, Xingtian Hao, Xingping Zhou, Haiyan Peng, Zhihao Shen, Ivan I. Smalyukh, Xiaolin Xie, Bai Yang
Summary: This study discovers a new liquid crystallization method by anchoring flexible alkyl chains on the surface of carbon dots (CDs), which effectively reduces aggregation-caused quenching effect and enables low-temperature melt-processing capability. Direct ink writing (DIW) with liquid crystal (LC) carbon dots has been successfully demonstrated, showing highly emissive objects.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Loredana M. Massaro, Silvia Gentilini, Alberto Portone, Andrea Camposeo, Dario Pisignano, Claudio Conti, Neda Ghofraniha
Summary: The study explores complex networks of light emitters as novel platforms for photonic circuits, successfully demonstrating the use of nanoscale random lasers. Heterogeneous random lasers made of ribbon-like and highly porous fibers show a novel emission effect by alternately switching on and off with different pumping light intensities. The observed blinking effect in the emitting fibers is attributed to mode interaction along light guiding fibers, opening up new possibilities for flexible photonic networks with specific and adaptable activity.
Article
Materials Science, Multidisciplinary
George Flamourakis, Antonis Kordas, Georgios D. Barmparis, Anthi Ranella, Maria Farsari
Summary: Multiphoton lithography offers the potential for high-resolution, free-form 3D printing of micro-optical elements and tissue engineering scaffolds, but material and structure autofluorescence present a major challenge. This study demonstrates the use of Sudan Black B as both a photoinitiator and post-fabrication treatment to create a non-fluorescent composite for producing high-quality microstructures.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Chemistry, Multidisciplinary
Ioannis Spanos, Zacharias Vangelatos, Costas Grigoropoulos, Maria Farsari
Summary: This paper explores the mechanical performance of characteristic auxetic and anisotropic designs fabricated by multiphoton lithography, with distinct responses conveyed through finite element analysis. Nanoindentation experiments observed through scanning electron microscopy validate the modeling and observe anisotropic or auxetic phenomena, showcasing the potential for investigating these architected materials at the microscale.
Article
Chemistry, Multidisciplinary
Dan Qu, Matteo Archimi, Andrea Camposeo, Dario Pisignano, Eyal Zussman
Summary: A method of fabricating circularly polarized lasers using cellulose nanocrystals and a laser dye through evaporation-induced assembly is presented, showing controlled chiral nematic structure and modification of laser polarization state into left-handed, resulting in strong and tailored CP laser emission.
Article
Chemistry, Physical
Xianguang Yang, Long Wen, Jiahao Yan, Yanjun Bao, Qin Chen, Andrea Camposeo, Dario Pisignano, Baojun Li
Summary: This study demonstrates the use of an external silica nanofiber to excite an organic-inorganic hybrid nanowaveguide, achieving asymmetric coupling of excitation signals in two opposite directions and producing light of different colors. By mixing red, green, and blue components in a three-in-one manner, a rainbow-like light is achieved in the hybrid waveguide. This research represents a significant advancement towards integrated nanophotonic devices for all-optical routing and full-color display.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Gaia Ciampalini, Filippo Fabbri, Guido Menichetti, Luca Buoni, Simona Pace, Vaidotas Miseikis, Alessandro Pitanti, Dario Pisignano, Camilla Coletti, Alessandro Tredicucci, Stefano Roddaro
Summary: The conducting properties of graphene-MoS2 heterojunction were investigated, revealing a suppression of transport on the n-side of the transconductance curve due to trapping by sulfur vacancies, which counterintuitively depends on the field effect.
Article
Biochemistry & Molecular Biology
Gianfranco Cordella, Antonio Tripodo, Francesco Puosi, Dario Pisignano, Dino Leporini
Summary: This paper examines the nanoscale surface instability of ultrathin molecular films deposited on a substrate under uniaxial compression using molecular dynamics simulations. The study reveals the development of one-dimensional wrinkling structures and the scaling relationship between wavelength and film length. It is found that small compressions can be well described, while large compressions lead to increased wrinkling amplitudes with nearly constant cross sections, offering a novel interpretation of instability. These findings may be crucial for designing effective wrinkling and buckling patterns in flexible platforms for electronics and photonics.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Polymer Science
Michele Monteferrante, Adriano Tiribocchi, Sauro Succi, Dario Pisignano, Marco Lauricella
Summary: This study investigates the free radical polymerization of photocurable polymers using reactive classical molecular dynamics combined with a dynamical approach of the nonequilibrium molecular dynamics (D-NEMD) method. The results provide insights into the physical and topological properties of the polymer and predict its mechanical behavior. This approach offers a novel tool to describe photopolymerization processes and optimize additive manufacturing methods.
Article
Materials Science, Multidisciplinary
Qiuguo Li, Hao Rao, Xinzhou Ma, Haijuan Mei, Zhengting Zhao, Weiping Gong, Andrea Camposeo, Dario Pisignano, Xianguang Yang
Summary: Cu2Te microdisks were successfully prepared using GaTe as Te source, exhibiting a new red emission band in the photoluminescence spectrum and functioning as an efficient optical microcavity for red lasing. These microdisks also serve as ideal substrates for surface enhanced Raman scattering, with high enhancement factor and detection limit to nanomolar level.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Giovanni Morello, Maria Moffa, Martina Montinaro, Annachiara Albanese, Karolis Kazlauskas, Saulius Jursenas, Ausra Tomkeviciene, Juozas Grazulevicius, Andrea Camposeo, Dario Pisignano
Summary: The optical gain of electrospun polystyrene fibers doped with a multi-fragment molecular dye has been studied. Aligned fibers show enhanced performance and the gain spectrum can be tuned by adjusting the dye concentration. On the other hand, randomly oriented fibers exhibit random lasing with a manifold of spectral line narrowing. Increasing the dye content reduces the lasing threshold and allows tuning of the laser emission wavelength. These findings highlight the potential of these fibers for variable-gain, broadband lasing in optical sensing and tunable microlaser devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Israel Greenfeld, Andrea Camposeo, Alberto Portone, Luigi Romano, Maria Allegrini, Francesco Fuso, Dario Pisignano, H. Daniel Wagner
Summary: The molecular orientation in polymer fibers can be enhanced by mixing nanowires, resulting in improved optical properties. Experimental results showed that the molecular orientation was significantly increased near the nanowire boundaries. This method has potential applications in improving the performance of optical devices and sensors.
ACS APPLIED NANO MATERIALS
(2022)
Article
Multidisciplinary Sciences
Dhruv Saxena, Alexis Arnaudon, Oscar Cipolato, Michele Gaio, Alain Quentel, Sophia Yaliraki, Dario Pisignano, Andrea Camposeo, Mauricio Barahona, Riccardo Sapienza
Summary: Recent research has shown that random lasing in complex networks can achieve efficient lasing properties and fast-switching multifunctional light sources by controlling the spatial shape of the pump profile. By solving nonlinear equations within the network graph and selectively lasing the strongest intensity modes, the spectrum of the lasing networks can be effectively programmed. This high sensitivity allows for control of the lasing spectrum through non-uniform pump patterns, leading to the development of optical devices with wide impact for on-chip photonics for communication, sensing, and computation.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Matteo Archimi, Ella Schoolaert, Jana Becelaere, Richard Hoogenboom, Andrea Camposeo, Karen De Clerck, Dario Pisignano
Summary: This study reports on switchable optical gain based on arrays of thermo-responsive poly(2-n-propyl-2-oxazoline) nanofibers. The nanofibers exhibit light amplification and high humidity absorption capability. Waveguiding analysis reveals that the switching mechanism is caused by moisture sorption swelling-induced morphological changes. These responsive light-emitting nanofibers have potential applications in dynamically-controlled lasers, environmentally-switchable optoelectronics, and smart sensors.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Luana Persano, Sujoy Kumar Ghosh, Dario Pisignano
Summary: The realization of intelligent, self-powered components and devices exploiting the piezoelectric effect at large scale would greatly improve resource utilization efficiency, but a profound redesign of materials and architectures is required. Polymers, especially PVDF and its copolymers, have been widely used in this field due to their strong piezoelectric response and flexibility. Electrospinning enables the fabrication of piezoelectric polymer nanofibers with desired properties and is suitable for large-scale production.
ACCOUNTS OF MATERIALS RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Salvatore Moschetto, Margherita Bolognesi, Federico Prescimone, Marco Brucale, Alessio Mezzi, Luca Ortolani, Maria Caporali, Pasqualantonio Pingue, Manuel Serrano-Ruiz, Dario Pisignano, Maurizio Peruzzini, Luana Persano, Stefano Toffanin
Summary: Bidimensional materials like phosphorene show promise for electronic and optoelectronic applications, but challenges such as reactivity and deposition techniques have limited their real-world use. Recent studies suggest that 2D POx nanostructures exhibit electric responsiveness and can be prepared via electrospraying. This research paves the way for the potential implementation of phosphorus oxide-based 2D nanomaterials in energy-harvesting/conversion applications.
ACS APPLIED NANO MATERIALS
(2021)
