Biosensors:
● “Synthesis of Mesoporous CuO Hollow Sphere Nanozyme for Paper-Based Hydrogen Peroxide Sensor”
by Dong Cheng, Jing Qin, Youyou Feng and Jing Wei
Biosensors 2021, 11(8), 258; https://doi.org/10.3390/bios11080258

● “Wearable Biosensors for Non-Invasive Sweat Diagnostics”
by Jing Xu, Yunsheng Fang and Jun Chen
Biosensors 2021, 11(8), 245; https://doi.org/10.3390/bios11080245

C:
● “Towards Controlled Degradation of Poly(lactic) Acid in Technical Applications”
by Stefanie Teixeira, Katarzyna Morawa Eblagon, Filipa Miranda, M. Fernando R. Pereira and José Luis Figueiredo
C 2021, 7(2), 42; https://doi.org/10.3390/c7020042

● “Comments on the XPS Analysis of Carbon Materials”
by David J. Morgan
C 2021, 7(3), 51; https://doi.org/10.3390/c7030051

Chemosensors:
● “How Meaningful Are Minor Details in the Generation of Nanomodified Electrochemical Enzyme Biosensors? Exploring the Scenario with Sinusoidal Approaches”
by Md. Towhidur Rahman, David López-Iglesias, Alfonso Sierra-Padilla, Juan José García-Guzmán, Laura M. Cubillana-Aguilera, Dolores Bellido-Milla and José María Palacios-Santander
Chemosensors 2022, 10(8), 316; https://doi.org/10.3390/chemosensors10080316

● “Molecularly Imprinted Polymers for Chemical Sensing: A Tutorial Review”
by Nadja Leibl, Karsten Haupt, Carlo Gonzato and Luminita Duma
Chemosensors 2021, 9(6), 123; https://doi.org/10.3390/chemosensors9060123

● “Leftover Kiwi Fruit Peel-Derived Carbon Dots as a Highly Selective Fluorescent Sensor for Detection of Ferric Ion”
by Raji Atchudan, Thomas Nesakumar Jebakumar Immanuel Edison, Suguna Perumal, Rajangam Vinodh, Ashok K. Sundramoorthy, Rajendran Suresh Babu and Yong Rok Lee
Chemosensors 2021, 9(7), 166; https://doi.org/10.3390/chemosensors9070166

Coatings:
● “Fabrication of Thermal Plasma Sprayed NiTi Coatings Possessing Functional Properties”
by Sneha Samal, Ondřej Tyc, Jan Cizek, Jakub Klecka, František Lukáč, Orsolya Molnárová, Esther de Prado, Zdeněk Weiss, Jaromír Kopeček, Luděk Heller et al.
Coatings 2021, 11(5), 610; https://doi.org/10.3390/coatings11050610

● “Structure and Applications of Pectin in Food, Biomedical, and Pharmaceutical Industry: A Review”
by Cariny Maria Polesca Freitas, Jane Sélia Reis Coimbra, Victor Gomes Lauriano Souza and Rita Cássia Superbi Sousa
Coatings 2021, 11(8), 922; https://doi.org/10.3390/coatings11080922

Cosmetics:
● “Biobased and Eco-Compatible Beauty Films Coated with Chitin Nanofibrils, Nanolignin and Vitamin E”
by Luca Panariello, Alessandro Vannozzi, Pierfrancesco Morganti, Maria-Beatrice Coltelli and Andrea Lazzeri
Cosmetics 2021, 8(2), 27; https://doi.org/10.3390/cosmetics8020027

● “Natural Antioxidants from Plant Extracts in Skincare Cosmetics: Recent Applications, Challenges and Perspectives”
by Hien Thi Hoang, Ju-Young Moon and Young-Chul Lee
Cosmetics 2021, 8(4), 106; https://doi.org/10.3390/cosmetics8040106

Crystals:
● “”Seeing Is Believing”—In-Depth Analysis by Co-Imaging of Periodically-Poled X-Cut Lithium Niobate Thin Films”
by Sven Reitzig, Michael Rüsing, Jie Zhao, Benjamin Kirbus, Shayan Mookherjea and Lukas M. Eng
Crystals 2021, 11(3), 288; https://doi.org/10.3390/cryst11030288

● “Concepts of Nucleation in Polymer Crystallization”
by Jun Xu, Günter Reiter and Rufina G. Alamo
Crystals 2021, 11(3), 304; https://doi.org/10.3390/cryst11030304

Fibers:
● “Development of a Robot-Based Multi-Directional Dynamic Fiber Winding Process for Additive Manufacturing Using Shotcrete 3D Printing”
by Norman Hack, Mohammad Bahar, Christian Hühne, William Lopez, Stefan Gantner, Noor Khader and Tom Rothe
Fibers 2021, 9(6), 39; https://doi.org/10.3390/fib9060039

● “Shielding of Cosmic Radiation by Fibrous Materials”
by Tomasz Blachowicz and Andrea Ehrmann
Fibers 2021, 9(10), 60; https://doi.org/10.3390/fib9100060

Gels:
● “Synthesis of Nanogels: Current Trends and Future Outlook”
by Emanuele Mauri, Sara Maria Giannitelli, Marcella Trombetta and Alberto Rainer
Gels 2021, 7(2), 36; https://doi.org/10.3390/gels7020036

● “Tunable Human Myocardium Derived Decellularized Extracellular Matrix for 3D Bioprinting and Cardiac Tissue Engineering”
by Gozde Basara, S. Gulberk Ozcebe, Bradley W. Ellis and Pinar Zorlutuna
Gels 2021, 7(2), 70; https://doi.org/10.3390/gels7020070

Inorganics:
● “Misinterpretations in Evaluating Interactions of Vanadium Complexes with Proteins and Other Biological Targets”
by João Costa Pessoa and Isabel Correia
Inorganics 2021, 9(2), 17; https://doi.org/10.3390/inorganics9020017

● “A Quasi-Intramolecular Solid-Phase Redox Reaction of Ammonia Ligands and Perchlorate Anion in Diamminesilver(I) Perchlorate”
by Lara Alexandre Fogaça, Laura Bereczki, Vladimir M. Petruševski, Berta Barta-Holló, Fernanda Paiva Franguelli, Miklós Mohai, Kende Attila Béres, Istvan E Sajó, Imre Miklós Szilágyi and Laszlo Kotai
Inorganics 2021, 9(5), 38; https://doi.org/10.3390/inorganics9050038

● “Effects of Glymes on the Distribution of Mg(B₁₀H₁₀) and Mg(B₁₂H₁₂) from the Thermolysis of Mg(BH₄)₂”
by Ba L. Tran, Tamara N. Allen, Mark E. Bowden, Tom Autreyand Craig M. Jensen
Inorganics 2021, 9(6), 41; https://doi.org/10.3390/inorganics9060041

Magnetochemistry:
● “Geometrically Constrained Skyrmions”
by Swapneel Amit Pathak and Riccardo Hertel
Magnetochemistry 2021, 7(2), 26; https://doi.org/10.3390/magnetochemistry7020026

● “Nonvolatile Voltage Controlled Molecular Spin-State Switching for Memory Applications”
by Thilini K. Ekanayaka, Guanhua Hao, Aaron Mosey, Ashley S. Dale, Xuanyuan Jiang, Andrew J. Yost, Keshab R. Sapkota, George T. Wang, Jian Zhang, Alpha T. N’Diaye et al.
Magnetochemistry 2021, 7(3), 37; https://doi.org/10.3390/magnetochemistry7030037

● “Tuning of Structural, Dielectric, and Electronic Properties of Cu Doped Co–Zn Ferrite Nanoparticles for Multilayer Inductor Chip Applications”
by Muhammad Hadi, Khalid Mujasam Batoo, Ankush Chauhan, Omar M. Aldossary, Ritesh Verma and Yujie Yang
Magnetochemistry 2021, 7(4), 53; https://doi.org/10.3390/magnetochemistry7040053

● “Simulating Static and Dynamic Properties of Magnetic Molecules with Prototype Quantum Computers”
by Luca Crippa, Francesco Tacchin, Mario Chizzini, Antonello Ait, Michele Grossi, Alessandro Chies, Paolo Santin, Ivano Tavernelli and Stefano Carretta
Magnetochemistry 2021, 7(8), 117; https://doi.org/10.3390/magnetochemistry7080117

● “Green Synthesis of Metal and Metal Oxide Nanoparticles: Principles of Green Chemistry and Raw Materials”
by Liubov Soltys, Ostap Olkhovyy, Tetiana Tatarchuk and Mu. Naushad
Magnetochemistry 2021, 7(11), 145; https://doi.org/10.3390/magnetochemistry7110145

Materials:
● “A Stretchable, Self-Healable Triboelectric Nanogenerator as Electronic Skin for Energy Harvesting and Tactile Sensing”
by Xi Han, Dongjie Jiang, Xuecheng Qu, Yuan Bai, Yu Cao, Ruizeng Luo and Zhou Li
Materials 2021, 14(7), 1689; https://doi.org/10.3390/ma14071689

● “High UV and Sunlight Photocatalytic Performance of Porous ZnO Nanostructures Synthesized by a Facile and Fast Microwave Hydrothermal Method”
by Sofia Henriques Ferreira, Maria Morais, Daniela Nunes, Maria João Oliveira, Ana Rovisco, Ana Pimentel, Hugo Águas, Elvira Fortunato and Rodrigo Martins
Materials 2021, 14(9), 2385; https://doi.org/10.3390/ma14092385

● “Behaviour and Properties of Eco-Cement Pastes Elaborated with Recycled Concrete Powder from Construction and Demolition Wastes”
by Laura Caneda-Martínez, Manuel Monasterio, Jaime Moreno-Juez, Sagrario Martínez-Ramírez, Rosario García and Moisés Frías
Materials 2021, 14(5), 1299; https://doi.org/10.3390/ma14051299

● “Current Trends in Automotive Lightweighting Strategies and Materials”
by Frank Czerwinski
Materials 2021, 14(21), 6631; https://doi.org/10.3390/ma14216631

● “Antioxidants: Classification, Natural Sources, Activity/Capacity Measurements, and Usefulness for the Synthesis of Nanoparticles”
by Jolanta Flieger, Wojciech Flieger, Jacek Baj and Ryszard Maciejewski
Materials 2021, 14(15), 4135; https://doi.org/10.3390/ma14154135

● “Charge Carrier Processes and Optical Properties in TiO2 and TiO2-Based Heterojunction Photocatalysts: A Review”
by Stefano Lettieri, Michele Pavone, Ambra Fioravanti, Luigi Santamaria Amato and Pasqualino Maddalena
Materials 2021, 14(7), 1645; https://doi.org/10.3390/ma14071645

Membranes:
● “A Review on Ionic Liquid Gas Separation Membranes”
by Karel Friess, Pavel Izák, Magda Kárászová, Mariia Pasichnyk, Marek Lanč, Daria Nikolaeva, Patricia Luis and Johannes Carolus Jansen
Membranes 2021, 11(2), 97; https://doi.org/10.3390/membranes11020097

● “Removing of the Sulfur Compounds by Impregnated Polypropylene Fibers with Silver Nanoparticles-Cellulose Derivatives for Air Odor Correction”
by Aurelia Cristina Nechifor, Simona Cotorcea, Constantin Bungău, Paul Constantin Albu, Dumitru Pașcu, Ovidiu Oprea, Alexandra Raluca Grosu, Andreia Pîrțac and Gheorghe Nechifor
Membranes 2021, 11(4), 256; https://doi.org/10.3390/membranes11040256

● “Orodispersible Membranes from a Modified Coaxial Electrospinning for Fast Dissolution of Diclofenac Sodium”
by Tingbao Ning, Yangjian Zhou, Haixia Xu, Shiri Guo, Ke Wang and Deng-Guang Yu
Membranes 2021, 11(11), 802; https://doi.org/10.3390/membranes11110802

Metals:
● “Electrochemical Impedance Spectroscopy for the Measurement of the Corrosion Rate of Magnesium Alloys: Brief Review and Challenges”
by Sebastián Feliu, Jr.
Metals 2020, 10(6), 775; https://doi.org/10.3390/met10060775

● “Hydrogen Ironmaking: How It Works”
by Fabrice Patisson and Olivier Mirgaux
Metals 2020, 10(7), 922; https://doi.org/10.3390/met10070922

Nanomaterials:
● “Charge Transfer and Biocompatibility Aspects in Conducting Polymer-Based Enzymatic Biosensors and Biofuel Cells”
by Simonas Ramanavicius and Arunas Ramanavicius
Nanomaterials 2021, 11(2), 371; https://doi.org/10.3390/nano11020371

● “Nano-Hydroxyapatite Derived from Biogenic and Bioinspired Calcium Carbonates: Synthesis and In Vitro Bioactivity”
by Francesca Cestari, Francesca Agostinacchio, Anna Galotta, Giovanni Chemello, Antonella Motta and Vincenzo M. Sglavo
Nanomaterials 2021, 11(2), 264; https://doi.org/10.3390/nano11020264

● “Impact of Microplastics and Nanoplastics on Human Health”
by Maxine Swee-Li Yee, Ling-Wei Hii, Chin King Looi, Wei-Meng Lim, Shew-Fung Wong, Yih-Yih Kok, Boon-Keat Tan, Chiew-Yen Wong and Chee-Onn Leong
Nanomaterials 2021, 11(2), 496; https://doi.org/10.3390/nano11020496

● “Hypericum perforatum L.-Mediated Green Synthesis of Silver Nanoparticles Exhibiting Antioxidant and Anticancer Activities”
by Abdalrahim Alahmad, Armin Feldhoff, Nadja C. Bigall, Pascal Rusch, Thomas Scheper and Johanna-Gabriela Walter
Nanomaterials 2021, 11(2), 487; https://doi.org/10.3390/nano11020487

● “Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications”
by Soumya Sikdar, Pramod V. Menezes, Raven Maccione, Timo Jacob and Pradeep L. Menezes
Nanomaterials 2021, 11(6), 1375; https://doi.org/10.3390/nano11061375

● “Highly Skin-Conformal Laser-Induced Graphene-Based Human Motion Monitoring Sensor”
by Sung-Yeob Jeong, Jun-Uk Lee, Sung-Moo Hong, Chan-Woo Lee, Sung-Hwan Hwang, Su-Chan Cho and Bo-Sung Shin
Nanomaterials 2021, 11(4), 951; https://doi.org/10.3390/nano11040951

Polymers:
● “Multifunctional Polyhedral Oligomeric Silsesquioxane (POSS) Based Hybrid Porous Materials for CO₂ Uptake and Iodine Adsorption”
by Mohamed Gamal Mohamed, Mei-Yin Tsai, Chih-Feng Wang, Chih-Feng Huang, Martin Danko, Lizong Dai, Tao Chen and Shiao-Wei Kuo
Polymers 2021, 13(2), 221; https://doi.org/10.3390/polym13020221

● “Nanosponge-Based Composite Gel Polymer Electrolyte for Safer Li-O₂ Batteries”
by Julia Amici, Claudia Torchio, Daniele Versaci, Davide Dessantis, Andrea Marchisio, Fabrizio Caldera, Federico Bella, Carlotta Francia and Silvia Bodoardo
Polymers 2021, 13(10), 1625; https://doi.org/10.3390/polym13101625

● “Protective Face Mask Filter Capable of Inactivating SARS-CoV-2, and Methicillin-Resistant Staphylococcus aureus and Staphylococcus epidermidis”
by Miguel Martí, Alberto Tuñón-Molina, Finn Lillelund Aachmann, Yukiko Muramoto, Takeshi Noda, Kazuo Takayama and Ángel Serrano-Aroca
Polymers 2021, 13(2), 207; https://doi.org/10.3390/polym13020207

● “A Review of Vat Photopolymerization Technology: Materials, Applications, Challenges, and Future Trends of 3D Printing”
by Marek Pagac, Jiri Hajnys, Quoc-Phu Ma, Lukas Jancar, Jan Jansa, Petr Stefek and Jakub Mesicek
Polymers 2021, 13(4), 598; https://doi.org/10.3390/polym13040598

Separations:
● “Metal-Organic Frameworks in Bioanalysis: Extraction of Small Organic Molecules”
by Natalia Manousi, Orfeas-Evangelos Plastiras, Natasa P. Kalogiouri, Constantinos K. Zacharis and George A. Zachariadis
Separations 2021, 8(5), 60; https://doi.org/10.3390/separations8050060

● “Supercritical Carbon Dioxide Extraction, Antioxidant Activity, and Fatty Acid Composition of Bran Oil from Rice Varieties Cultivated in Portugal”
by Tânia I. Pinto, José A. Coelho, Bruna I. Pires, Nuno R. Neng, José M. Nogueira, João C. Bordado and José P. Sardinha
Separations 2021, 8(8), 115; https://doi.org/10.3390/separations8080115