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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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Next-Generation Wearable Technologies: Integrating Smart Sensing, Biomedical Innovation, and Sustainable Energy Solutions

edited by

Alwathiqbellah Ibrahim

submission deadline 30 Nov 2025 | Viewed by 34 | Submission Open

Keywords: wearable technologies; smart sensors; biomedical sensing; self-powered systems; energy harvesting; health monitoring; adaptive sensing; sustainable electronics

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

Advanced Nanomaterials for High-Performance Gas Sensors

edited by

Rajneesh Kumar Mishra

submission deadline 30 Nov 2025 | Viewed by 2 | Submission Open

Keywords: nanostructured materials; gas sensing mechanisms; metal oxide semiconductors (MOSs); two-dimensional (2D) materials; heterojunction engineering; room-temperature sensing; selectivity enhancement; sensor sensitivity optimization

(This special issue belongs to the Section C：Chemistry)

Flexible, Wearable Devices for Personalized Theranostics

edited by

Nam-Trung Nguyen

and Tuan-Khoa Nguyen

submission deadline 15 Dec 2025 | Viewed by 56 | Submission Open

Keywords: bioelectronics; biointerfaces; biosensors; flexible electronics; point-of-care diagnosis; point-of-care theranostics; wearable biosensors

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

Advanced Intelligent Robotic Systems: From Microrobots to Wearable Robots, 2nd Edition

edited by Jing Luo, Weiyong Si,

Muye Pang

Chenguang Yang

and Zhou Zhao

submission deadline 30 Dec 2025 | Viewed by 171 | Submission Open

Keywords: microrobots; wearable robots; robot manipulation

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

3D/4D Printing of Polymer-Based Composites and Lightweight Structures

edited by

Yuan Chen

and

Ping Cheng

submission deadline 30 Dec 2025 | Viewed by 98 | Submission Open

Keywords: three-dimensional/four-dimensional printing; polymers and polymer-based composites; lightweight structures; numerical simulation; function design; mechanics characterization

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

MEMS Sensors and Actuators: Design, Fabrication and Applications, 2nd Edition

edited by

Lei Shao

Zhiran Yi

and

Ha Duong Ngo

submission deadline 30 Dec 2025 | Viewed by 84 | Submission Open

Keywords: MEMS; sensors; actuators; transducers; microsystems; microfabrication

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

Metamaterials for Sensing Applications

edited by

Yuzhi Shi

and

Yi Yang

submission deadline 31 Dec 2025 | 4 articles | Viewed by 4745 | Submission Open

Keywords: metamaterials; lab on a chip; biological sensing using subwavelength structures; chemical sensing using subwavelength structures; physical sensing using subwavelength structures; optical manipulation using metamaterials; optofluidic device; light– matter interactions

Advances in Digital Manufacturing and Nano Fabrication

edited by

Jian Cheng

, Jianguo Zhang and

Qi Liu

submission deadline 31 Dec 2025 | 2 articles | Viewed by 2105 | Submission Open

Keywords: digital manufacturing; smart manufacturing; nano fabrication; ultra-precision/precision machining; digital twin; advanced manufacturing processes; additive manufacturing; subtractive manufacturing; nano-scale machining; artificial intelligence in manufacturing; sustainable manufacturing

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

Thin Film Photovoltaic and Photonic Based Materials and Devices

edited by

Hugo Aguas

submission deadline 31 Dec 2025 | 1 articles | Viewed by 1478 | Submission Open

Keywords: solar cells; photovoltaics; thin films; photonics

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

Recent Advance in Piezoelectric Actuators and Motors, 3rd Edition

edited by

Liang Wang

and

Dalius Mažeika

submission deadline 31 Dec 2025 | 1 articles | Viewed by 649 | Submission Open

Keywords: piezoelectric actuator; ultrasonic motor; piezoelectric transducer; piezoelectric mirror; arrays energy harvesting; vibration control; piezoelectric actuator and motor modeling; piezoelectric actuator and motor applications: aerospace; weapons; optical instruments; biomedical equipments

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

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 446 | 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)

Artificial Intelligence for Micro Inertial Sensors

edited by

Xudong Zou

and Chong Li

submission deadline 31 Dec 2025 | 1 articles | Viewed by 304 | Submission Open

Keywords: MEMS sensors; inertial sensors; machine learning; artificial intelligence

(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 | Viewed by 187 | Submission Open

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

(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 141 | 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)

Celebration of 60th Anniversary of Moore's Law: The Significant Milestone in Micromachines

edited by

Sabina Merlo

Huikai Xie

and

Nam-Trung Nguyen

submission deadline 31 Dec 2025 | Viewed by 126 | Submission Open

Keywords: basic structures of MEMS ; applications of MEMS ; processes of MEMS; bio-MEMS and related fields ; integrated circuits; integrated photonic circuits; semiconductor devices; 2D semiconductor materials; complementary metal– oxide– semiconductor (CMOS); metal– oxide– semiconductor field-effect transistor (MOSFET); nanotransistor; photodetectors; quantum devices; finFETs

Selected Papers from the 26th EuroSimE Conference

edited by

Jiajie Fan

and Willem Van Driel

submission deadline 31 Dec 2025 | Viewed by 116 | Submission Open

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

(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 | Viewed by 106 | Submission Open

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

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

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

edited by Wei Guo and Yage Zhang

submission deadline 31 Dec 2025 | Viewed by 96 | 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 Vacuum Nanoelectronics

edited by

John Xanthakis

submission deadline 31 Dec 2025 | Viewed by 82 | 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)

Microreactors for Chemical Applications

edited by

Yangcheng Lu

submission deadline 31 Dec 2025 | Viewed by 74 | Submission Open

Keywords: microreactor; chemical synthesis; chemical analysis; reaction; chemical process; process intensification; separation; chemical technology; chemical materials

(This special issue belongs to the Section C：Chemistry)

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

edited by

Panagiotis Kyratsis

submission deadline 31 Dec 2025 | Viewed by 74 | 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)

MEMS/NEMS Devices and Applications, 3rd Edition

edited by

Ching-Liang Dai

and Zhi-Xuan Dai

submission deadline 31 Dec 2025 | Viewed by 73 | Submission Open

Keywords: physical sensors; force sensors; magnetic sensors; optical sensors; microphones; flow sensors; thermal sensors; chemical sensors; biosensors; gas sensors; actuators; resonators/filters; switches/relays; energy harvesters; lens/mirrors

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

Soft Sensors and Soft Circuits: Design, Implementation and Applications

edited by

Lei Jing

and Tomohito Sekine

submission deadline 31 Dec 2025 | Viewed by 65 | Submission Open

Keywords: e-textiles; e-skin; soft robotics; wearable sensors; flexible and stretchable electronics; human– machine interfaces; conductive polymers; self-healing sensors; hydrogel-based sensors; skin-mountable devices

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

Advancing Energy Storage Techniques: Chemistry, Materials and Devices

edited by Yingmeng Zhang

submission deadline 31 Dec 2025 | Viewed by 62 | Submission Open

Keywords: energy storage and conversion devices; advanced materials; novel electrode design; cell engineering design; energy storage chemistry; energy storage mechanism; machine learning; multidisciplinary approaches

(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 | Viewed by 59 | Submission Open

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

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

Small-Scale Mechanical Behaviors in Advanced Engineering Materials

edited by

Ting Tsui

and Nitya Nand Gosvami

submission deadline 31 Dec 2025 | Viewed by 50 | Submission Open

Keywords: small-scale mechanical properties; nano-tribology and wear; nanoindentation and contact mechanics; chemical mechanical polish (CMP); mechanical wear in biomedical implant materials; biological cell adhesion on surfaces

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

Microwave Passive Components, 3rd Edition

edited by

Lin Huang

, Weijie Wang,

Guoxiang Shu

and

Guo Liu

submission deadline 31 Dec 2025 | Viewed by 44 | Submission Open

Keywords: theory; modeling; fabrication; measurement and applications; microwave-; millimeter- and terahertz-wave passive component/devices applied in communication; radar and other systems; passive component/devices in antennas; filters; biosensors; vacuum electronic devices; pulse compressor; particle accelerator; etc.; other work related to microwave devices

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

MEMS Sensors and Their Novel Breakthrough Applications

edited by Yu-Sheng Lin

submission deadline 31 Dec 2025 | Viewed by 31 | 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)

Advances in Flexible and Wearable Electronics: Devices and Systems

edited by

Eun Gyo Jeong

submission deadline 31 Dec 2025 | Viewed by 30 | Submission Open

Keywords: flexible electronics; wearable devices; stretchable sensors; printed and hybrid electronics; low-power circuits and system integration; wireless communication for wearables; energy harvesting and self-powered systems; smart materials and nanostructures; biomedical applications

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

Ultrafast Laser Micro- and Nanoprocessing, 3rd Edition

edited by

Xin Zhao

submission deadline 31 Dec 2025 | Viewed by 15 | Submission Open

Keywords: ultrafast lasers; materials processing; nano- and microscale; laser– matter interaction; laser ablation; laser machining; surface texturing; two/multi-photon polymerization/reduction; beam/pulse shaping; numerical modeling

(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 | Viewed by 10 | 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)

Thin Film Deposition and Characterization in Micro- and Nano-Technology

edited by

Chih-Hao Lee

submission deadline 31 Dec 2025 | Submission Open

Keywords: thin film deposition; thin film characterization; nanoprobe; nanotechnology

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

Recent Study and Progress in Micro/Nanorobots

edited by Fangzhou Xia and

Riko Šafarič

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

Keywords: miniaturized robot design and fabrication; precision instruments for nanotechnology; novel transducers for sensing/actuation; MEMS devices in micro/nanorobotics; smart material and physical intelligence; control and estimation at the micro/nanoscale; data-driven motion control on the nanoscale; nanoscale fabrication and characterization; swarm and collective behavior; nano/microrobots for biomedical applications

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

DNA-Based Electrochemical Biosensors and Aptasensors: Advances in Medical Diagnostics and Detection

edited by

Van Thuan Nguyen

submission deadline 28 Feb 2026 | Viewed by 71 | Submission Open

Keywords: electrochemical biosensors; aptamer-based biosensor; aptasensors; medical diagnostics; point-of-care testing; biomarker detection; pathogen detection; DNA/RNA biosensors; nanotechnology-based sensors; biomedical applications; microfluidic integration; clinical diagnostics; rapid detection technologies; electrochemical detection methods

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

GaN Heterostructure Devices: From Materials to Application, 2nd Edition

edited by Baijun Zhang

submission deadline 28 Feb 2026 | Viewed by 32 | Submission Open

Keywords: GaN heterostructure; optoelectronic devices; electronic devices; biosensor; THz devices; MEMS devices

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

Biomedical Micro/Nanorobots: Design, Fabrication and Applications

edited by Chuang Zhang and