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Micromachines publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Laser Shock Peening and Allied Processes to Improve Materials Strength

edited by Jan Brajer and

Pathak Sunil

submission deadline 31 Dec 2025 | 1 articles | Viewed by 1113 | Submission Open

Keywords: laser shock peening; ultrasonic nanocrystal surface modification; residual stresses; plastic deformation; fatigue life; microstructure

(This special issue belongs to the Section E：Engineering and Technology)

Nanogenerators: Design, Fabrication and Applications

edited by Junqing Zhao and

Xiaojing Mu

submission deadline 31 Dec 2025 | 1 articles | Viewed by 1095 | Submission Open

Keywords: nanogenerator; micro- and nano-manufacturing; nanotechnology; energy harvesting; nanoelectronics

(This special issue belongs to the Section A：Physics)

Photodetectors and Their Applications

edited by Jinfeng Han

submission deadline 31 Dec 2025 | 1 articles | Viewed by 1086 | Submission Open

Keywords: photodetectors; flexible devices; materials; applications

(This special issue belongs to the Section A：Physics)

Innovations in 3D Printing Technologies: From Microfabrication to Functional Applications

edited by

Panagiotis Kyratsis

submission deadline 31 Dec 2025 | 1 articles | Viewed by 1080 | Submission Open

Keywords: 3D printing technologies; additive manufacturing; artificial intelligence (AI) in 3D printing; sustainability in 3D printing; multi-material printing

(This special issue belongs to the Section D3: 3D Printing and Additive Manufacturing)

Droplet Microfluidic-Based Systems: Fundamentals, Applications, and Future Directions

edited by Wei Guo and Yage Zhang

submission deadline 31 Dec 2025 | 1 articles | Viewed by 1037 | Submission Open

Keywords: microfluidics; droplet manipulations; high-throughput screening; microfabrications; biochemical assays; directed evolution

(This special issue belongs to the Section B：Biology and Biomedicine)

Advances in Nanophotonics: Physics, Materials, and Applications

edited by

Yi-Yu Cai

submission deadline 31 Dec 2025 | 1 articles | Viewed by 834 | Submission Open

Keywords: plasmonics; metamaterials; nanophotonics; self-assembly; single-particle spectroscopy

(This special issue belongs to the Section A：Physics)

Metasurface-Based Devices and Systems

edited by

Giuseppe Brunetti

and

Muhammad Ali Butt

submission deadline 31 Dec 2025 | 1 articles | Viewed by 834 | Submission Open

Keywords: dielectric metasurface; imaging; sensing; communications technologies; beamforming; beamsteering; dielectric antenna

(This special issue belongs to the Section A：Physics)

CMOS-MEMS Fabrication Technologies and Devices, 2nd Edition

edited by

Liangxing Hu

submission deadline 31 Dec 2025 | 1 articles | Viewed by 662 | Submission Open

Keywords: CMOS-MEMS fabrication technologies; CMOS; MEMS; CMOS-MEMS integration; 3D integration

(This special issue belongs to the Section A：Physics)

Current Research Progress in Microwave Metamaterials and Metadevices

edited by

Linda Shao

and

Xiaoguang Zhao

submission deadline 31 Dec 2025 | 1 articles | Viewed by 623 | Submission Open

Keywords: theory and modeling of metamaterials/metasurfaces; electromagnetic metamaterials/metasurfaces; reconfigurable metamaterials/metasurfaces; novel effects in microwave metadevices

(This special issue belongs to the Section D：Materials and Processing)

Potentials of 2D Materials for Emerging Electronic Devices

edited by

Ghulam Dastgeer

submission deadline 31 Dec 2025 | Viewed by 568 | Submission Open

Keywords: 2D materials; sensing devices; field-effect transistors (FETs); gas sensors; biosensors; transition metal dichalcogenides (TMDs); graphene; optical sensors; flexible electronics; Internet of Things (IoT); wearable sensors; surface functionalization; nanodevices; neuromorphic sensing; artificial intelligence integration

(This special issue belongs to the Section D：Materials and Processing)

Micro/Nano Optical Devices and Sensing Technology

edited by

Zhidong Zhang

submission deadline 31 Dec 2025 | 1 articles | Viewed by 452 | Submission Open

Keywords: micro/nano optical devices; optical sensing; photonic crystals; plasmonic resonance; metasurfaces; micro/nano fabrication

(This special issue belongs to the Section A：Physics)

Feature Papers of Micromachines in Additive Manufacturing 2025

edited by Reza Teimouri

submission deadline 31 Dec 2025 | Viewed by 366 | Submission Open

Keywords: novel applications of additive manufacturing; selective laser melting; hybrid additive manufacturing; laser powder bed fusion; laser-based additive manufacturing; metallic additive manufacturing; 3D printing

(This special issue belongs to the Section D3: 3D Printing and Additive Manufacturing)

Selected Papers from the 26th EuroSimE Conference

edited by

Jiajie Fan

and Willem Van Driel

submission deadline 31 Dec 2025 | Viewed by 295 | Submission Open

Keywords: MEMS/NEMS; microelectronics microsystems reliability; simulation and modeling

(This special issue belongs to the Section A：Physics)

Wearable Piezoelectric Sensors for Biomedical Applications

edited by

Ragu Sasikumar

and

Palraj Ranganathan

submission deadline 31 Dec 2025 | Viewed by 176 | Submission Open

Keywords: piezoelectric nanogenerators; wearable sensors; biomechanical motions; healthcare

(This special issue belongs to the Section A：Physics)

Advances in Vacuum Nanoelectronics

edited by

John Xanthakis

submission deadline 31 Dec 2025 | Viewed by 175 | Submission Open

Keywords: nanoelectronics for X-ray sources; field emission displays; electron emitters for microscopy and lithography; vacuum transistors; thermoelectric energy conversion; photo-induced electron nanosources; nanoelectronics of THz technology; field emission and microplasma; modern theory of field emission and electron devices

(This special issue belongs to the Section A：Physics)

MEMS Sensors and Their Novel Breakthrough Applications

edited by Yu-Sheng Lin

submission deadline 31 Dec 2025 | Viewed by 155 | Submission Open

Keywords: MEMS sensors; microstructures; nanomaterials; nanophotonics; 2D materials; metamaterials; photonic integrated circuit; microfluidics; biochips; 3D printing

(This special issue belongs to the Section A：Physics)

Research Progress on Piezoelectric Energy Harvesting Devices

edited by

Min Wang

and

Junrui Liang

submission deadline 31 Dec 2025 | Viewed by 138 | Submission Open

Keywords: piezoelectrics materials and structures; novel ferroelectric and piezoelectric materials; vibration control and application; piezoelectric energy harvesting devices and systems

(This special issue belongs to the Section A：Physics)

Magnetorheological Materials and Application Systems, Second Edition

edited by

Seung-Bok Choi

and

Miao Yu

submission deadline 31 Dec 2025 | Viewed by 132 | Submission Open

Keywords: magnetorheological materials; temperature effect; thermal conductivity; heat transfer

(This special issue belongs to the Section E：Engineering and Technology)

Research Progress of Ultra-Precision Micro-Nano Machining, Second Edition

edited by

Huaizhong Li

and Xiubing Jing

submission deadline 31 Dec 2025 | Viewed by 130 | Submission Open

Keywords: ultra-precision machining; micro-nano machining; micro-nano chip formation; process modeling and simulation; process automation and optimization

(This special issue belongs to the Section D：Materials and Processing)

Recent Advances in Soft Miniature Robotics: Design, Fabrication, Control, and Application

edited by

Rongjing Zhang

and

Patrick R. Onck

submission deadline 31 Dec 2025 | Viewed by 127 | Submission Open

Keywords: soft robotics; stimuli-responsive materials; bioinspired actuation; 3D/4D printing; human– robot collaboration; medical robotics; autonomous control; wearable technologies

(This special issue belongs to the Section E：Engineering and Technology)

MEMS and NEMS Sensors: Innovations, Applications, and Future Directions in Micro/Nano Technologies

edited by Meng Nie and

Kuibo Yin

submission deadline 31 Dec 2025 | Viewed by 122 | Submission Open

Keywords: MEMS/nano sensors; micro/nano nanotechnology; sensor technology; material innovations; wearable devices; nanoelectronics

(This special issue belongs to the Section A：Physics)

Microscale Biosensors Based on Smart Hydrogels and Soft Materials

edited by

Ye Tian

and

Wenlong Xu

submission deadline 31 Dec 2025 | Viewed by 120 | Submission Open

Keywords: soft materials; hydrogel; biosensor; hydrogel sensing; flexible sensing

(This special issue belongs to the Section B1: Biosensors)

Microwave-Assisted Advanced Manufacturing Technologies

edited by

Nanya Li

submission deadline 31 Dec 2025 | Viewed by 102 | Submission Open

Keywords: 3D printing; additive manufacturing; microwave material process; biomedical engineering; advanced processing methods

(This special issue belongs to the Section E：Engineering and Technology)

Recent Progress in Wearable Healthcare Devices

edited by

Sungyong Jung

and

Hyusim Park

submission deadline 31 Dec 2025 | Viewed by 101 | Submission Open

Keywords: wearable microsystems; flexible/stretchable microelectronics; MEMS/NEMS for health monitoring; on-skin and implantable sensors; multimodal biosensing; AI-enabled microsensors; energy harvesting at microscale; microfluidics for wearable devices; edge computing in wearable health; microfabrication for biomedical applications

(This special issue belongs to the Section E：Engineering and Technology)

Novel Designs in Programmable or Self-Assembling Microdevices

edited by Cheng Lin, Xiaozhou Xin and Liwu Liu

submission deadline 31 Dec 2025 | Viewed by 98 | Submission Open

Keywords: self-assembling material; implantable microdevices; shape memory polymers; 3D/4D Printing; smart microstructures and microdevices

(This special issue belongs to the Section E：Engineering and Technology)

Advances in Microfluidic Technologies for 3D Cell Culture, Organ-on-a-Chip, Regenerative Trials and Translational Medicine

edited by

Iraj Alipourfard

submission deadline 31 Dec 2025 | Viewed by 96 | Submission Open

Keywords: regenerative therapy; disease modelling; organ-on-chip; microfluidics; 3D cell culture; stem cell; cell markers

(This special issue belongs to the Section B：Biology and Biomedicine)

Micro/Nano Photonics and Metamaterials: From Research to Applications

edited by Fuxin Guan, Wange Song and

Xinhua Wen

submission deadline 31 Dec 2025 | Viewed by 87 | Submission Open

Keywords: metamaterials/metasurfaces; photonic integrated platform; topological and non-Hermitian physics; micro/nano-scale manufacturing techniques; time-varying media; nonlinear optical devices; complex media; photonic and phononic crystals

(This special issue belongs to the Section A：Physics)

Recent Advances in Printing Electronics and Sensor Technologies

edited by Md. Rajibur Rahaman Khan

submission deadline 31 Dec 2025 | Viewed by 87 | Submission Open

Keywords: printed electronics; conductive inks; screen printing; sensors; smart textiles; colorimetric sensor; healthcare devices; printed circuitry

(This special issue belongs to the Section E：Engineering and Technology)

Solid-State Sensors, Actuators and Microsystems—Transducers 2025

edited by

Hyoung Jin Cho

Ha Duong Ngo

and

Jing Wang

submission deadline 31 Dec 2025 | Viewed by 82 | Submission Open

Keywords: microscale and nanoscale materials and fabrication; soft; flexible and stretchable materials and electronics; MEMS; sensors and microsystem; resonators; actuators and transducers; microfluidic platform technologies

Recent Advances in Field-Effect Transistors: Materials, Devices, and Emerging Applications

edited by Xiao Yu

submission deadline 31 Dec 2025 | Viewed by 78 | Submission Open

Keywords: field-effect transistors; CMOS scaling; novel channel materials; ferroelectric FETs; steep-slope devices; nanosheet FETs; device modeling; gate stack engineering; 2D materials; emerging logic devices

(This special issue belongs to the Section D1: Semiconductor Devices)

Optical Biosensors and Their Biomedical Applications

edited by Wonil Nam

submission deadline 31 Dec 2025 | Viewed by 75 | Submission Open

Keywords: surface-enhanced Raman spectroscopy (SERS); plasmonic nanoantenna; microfluidic biosensor; lab-on-a-chip; photonic crystal sensor; whispering-gallery-mode microresonator; optical microfiber; optofluidics; fluorescence lifetime imaging; intracellular sensing; optoporation; wearable optical sensor; point-of-care diagnostics; nanoplasmonics; single-molecule detection

(This special issue belongs to the Section B：Biology and Biomedicine)

Smart Biomaterials for Biofabrication: Design, Functionality, and Application

edited by

Shabir Hassan

submission deadline 31 Dec 2025 | Viewed by 72 | Submission Open

Keywords: smart biomaterials; biofabrication; tissue engineering; drug delivery; 3D bioprinting; minimally invasive implantation; AI-driven design

(This special issue belongs to the Section B2: Biofabrication and Tissue Engineering)

Recent Advancements in Microwave and Optoelectronics Devices

edited by

Alexandre Jean René Serres

submission deadline 31 Dec 2025 | Viewed by 46 | Submission Open

Keywords: microwave devices; optoelectronic systems; antenna design and applications

(This special issue belongs to the Section A：Physics)

Optofluidic Devices and Their Applications

edited by Xiang Wu

submission deadline 1 Jan 2026 | Viewed by 185 | Submission Open

Keywords: optofluidics; lab-on-a-chip; microfluidics; biomedical diagnostics; environmental sensing; solar energy harvesting; artificial photosynthesis; optofluidic microscopy; spectroscopy; pollutant detection; single-cell analysis; portable imaging; 3D printing in optofluidics; hybrid integration; personalized medicine; molecular analysis; renewable energy solutions; device fabrication techniques; miniaturized analytical systems; high-sensitivity detection; biosensors

(This special issue belongs to the Section B：Biology and Biomedicine)

Point-of-Care Testing Based on Biosensors and Biomimetic Sensors

edited by

Rosa Fireman Dutra

submission deadline 15 Jan 2026 | 1 articles | Viewed by 945 | Submission Open

Keywords: point-of-care testing; immunosensors; biomimetic techniques; molecularly imprinted polymers; artificial enzymes; aptamers; biosensors; diagnostics; rapid detection; multiplexing; electrochemical sensors; optical sensors; nanomaterials

(This special issue belongs to the Section B4: Point-of-Care Devices)

Self-Powered Sensors: Design, Applications and Challenges

edited by Jian Chen

submission deadline 20 Jan 2026 | Viewed by 305 | Submission Open

Keywords: self-powered sensors; triboelectric/piezoelectric nanogenerator; flexible electronics; thermoelectric; biofuel cell

(This special issue belongs to the Section A：Physics)

Wide-Bandgap Semiconductor Devices: Materials, Fabrication, and Applications, 2nd Edition

edited by Jie Su, Xi Jiang and Song Yuan

submission deadline 25 Jan 2026 | 4 articles | Viewed by 4865 | Submission Open

Keywords: wide-bandgap semiconductor materials and devices; power semiconductor devices; semiconductor performance characterization; power electronics; semiconductor device fabrication; semiconductor device reliability

(This special issue belongs to the Section D1: Semiconductor Devices)

Optoelectronic Fusion Technology

edited by

Jianping Chen

and

Sha Zhu

submission deadline 25 Jan 2026 | 3 articles | Viewed by 4265 | Submission Open

Keywords: optoelectronic chip; optoelectronic fusion technology; heterogeneous integration; wafer-level chip fabrication; packaging and testing; intelligent information processing; perception; and computing

(This special issue belongs to the Section A：Physics)

Nanomaterials for Energy Storage and Sensing Applications

edited by Claudia Cirillo and Mariagrazia Iuliano

submission deadline 25 Jan 2026 | Viewed by 77 | Submission Open

Keywords: nanomaterials; energy storage; sensing applications; nanostructures; functional nanomaterials; material synthesis; nanotechnology

(This special issue belongs to the Section D：Materials and Processing)

Acoustic-Wave-Based Sensors and Microfluidics: Theories, Techniques, and Applications

edited by

Wenbo Peng

and Xiaolong Zhao

submission deadline 30 Jan 2026 | 4 articles | Viewed by 14211 | Submission Open

Keywords: surface acoustic wave; bulk acoustic wave; acoustic wave sensors; sensing mechanisms; acoustofluidics; acoustic streaming; micro/nanoparticle manipulation; lab-on-a-chip

(This special issue belongs to the Section A：Physics)

Current Trends in Microneedles: Design, Fabrication and Applications

edited by

Colin Dalton

and

Thomas M. Lijnse

submission deadline 30 Jan 2026 | 6 articles | Viewed by 11708 | Submission Open

Keywords: solid and hollow microneedles; coated microneedles; dissolvable microneedles; microneedle microfabrication; microneedle arrays; microneedle patches; microneedle applications; microneedle design; drug delivery; biosensing; biocompatibility; tissue mechanics

(This special issue belongs to the Section B：Biology and Biomedicine)

Power Semiconductor Devices and Applications, 3rd Edition

edited by

Shengdong Hu

submission deadline 30 Jan 2026 | 5 articles | Viewed by 6728 | Submission Open

Keywords: high- and low-voltage silicon-based devices; GaN and compound semiconductor devices; SiC- and other-material-based devices; power IC technology

(This special issue belongs to the Section D1: Semiconductor Devices)

Research Trends of RF Power Devices

edited by Sheng-Lyang Jang and

Wen-Cheng Lai

submission deadline 30 Jan 2026 | 1 articles | Viewed by 570 | Submission Open

Keywords: RF power device design and fabrication; RF power circuit design and characterization; heterogeneous integration of RF semiconductor devices; RF/THz power circuit; integrated power devices; passive components; sensors

(This special issue belongs to the Section E：Engineering and Technology)

Biosensors for Biomedical and Environmental Applications, Third Edition

edited by

Antonella Battisti

submission deadline 31 Jan 2026 | 6 articles | Viewed by 14953 | Submission Open

Keywords: sensors; biosensors; environmental sensors; biomedical sensors; food sensors; quality control; nanosystems; nanomaterials; immobilization technologies; aptamer-based biosensors; enzyme-based biosensors; cell-based biosensors; DNA-based biosensors; immunosensors; lab on a chip (LOC); miniaturization; microstructured sensors; nanostructured sensors; biomarkers detection; pollutants detection; contaminants detection; xenobiotics detection

(This special issue belongs to the Section B1: Biosensors)

Microfluidic Chips for Biomedical Applications

edited by

Yung-Shin Sun

and

Paul Hsieh-Fu Tsai

submission deadline 31 Jan 2026 | 7 articles | Viewed by 13725 | Submission Open

Keywords: microfluidics; lab-on-a-chip; organ-on-a-chip; microfabrication; μ TAS; MEMS

(This special issue belongs to the Section B：Biology and Biomedicine)

Advanced Micro- and Nano-Manufacturing Technologies, 2nd Edition

edited by

Kun Li

submission deadline 31 Jan 2026 | 9 articles | Viewed by 13636 | Submission Open

Keywords: high energy additive manufacturing (HEAM) processes; advanced materials by HEAM; performance and applications of HEAM; post-processing of HEAM parts; modeling and design of AM processes

(This special issue belongs to the Section D3: 3D Printing and Additive Manufacturing)

SiC Based Miniaturized Devices, 3rd Edition

edited by

Stephen Edward Saddow

, Brenda L. VanMil and Benoit Hamelin

submission deadline 31 Jan 2026 | 6 articles | Viewed by 10832 | Submission Open

Keywords: SiC microsystems; SiC MEMS; SiC biomedical devices; SiC micromachines; SiC microsensors

(This special issue belongs to the Section D：Materials and Processing)

Advanced Wide Bandgap Semiconductor Materials and Devices

edited by

Peng Li

submission deadline 31 Jan 2026 | 6 articles | Viewed by 5577 | Submission Open

Keywords: AlN; GaN; SiC; ZnO; TiO2; Ga2O3; photodetectors; LEDs; HEMTs; IGBT

(This special issue belongs to the Section D1: Semiconductor Devices)

Emerging Nanomaterials and Novel Structures for Photodetectors and Their Applications

edited by

Zhanfeng Huang

submission deadline 31 Jan 2026 | 4 articles | Viewed by 4750 | Submission Open

Keywords: photodetectors; optoelectronic sensors; optoelectronic materials; photodetector design and integration; perovskite photodetector; organic photodetector; imaging technology; human health monitoring; marine environmental monitoring

(This special issue belongs to the Section D：Materials and Processing)

Nanoparticle-Based (Bio)Sensors for Biomedical and Environmental Monitoring

edited by