1. “A Review on Recent Advancements of Graphene and Graphene-Related Materials in Biological Applications”
by Catania, F.; Marras, E.; Giorcelli, M.; Jagdale, P.; Lavagna, L.; Tagliaferro, A. and Bartoli, M.
Appl. Sci. 2021, 11(2), 614; https://doi.org/10.3390/app11020614
Available online: https://www.mdpi.com/2076-3417/11/2/614

2. “Review on Silver Nanoparticles as a Novel Class of Antibacterial Solutions”
by Crisan, C.; Mocan, T.; Manolea, M.; Lasca, L.; Tăbăran, F. and Mocan, L.
Appl. Sci. 2021, 11(3), 1120; https://doi.org/10.3390/app11031120
Available online: https://www.mdpi.com/2076-3417/11/3/1120

3. “Carbon Nanotube-Based Composite Filaments for 3D Printing of Structural and Conductive Elements”
by Podsiadły, B.; Matuszewski, P.; Skalski, A. and Słoma, M.
Appl. Sci. 2021, 11(3), 1272; https://doi.org/10.3390/app11031272
Available online: https://www.mdpi.com/2076-3417/11/3/1272

4. “Ag-Nanowire Bundles with Gap Hot Spots Synthesized in Track-Etched Membranes as Effective SERS-Substrates”
by Kozhina, E.; Bedin, S.; Nechaeva, N.; Podoynitsyn, S.; Tarakanov, V.; Andreev, S.; Grigoriev, Y. and Naumov, A.
Appl. Sci. 2021, 11(4), 1375; https://doi.org/10.3390/app11041375
Available online: https://www.mdpi.com/2076-3417/11/4/1375

5. “Nanoparticles and Nanocrystals by Supercritical CO₂-Assisted Techniques for Pharmaceutical Applications: A Review”
by Franco, P. and De Marco, I.
Appl. Sci. 2021, 11(4), 1476; https://doi.org/10.3390/app11041476
Available online: https://www.mdpi.com/2076-3417/11/4/1476

6. “Nanotechnology Development for Formulating Essential Oils in Wound Dressing Materials to Promote the Wound-Healing Process: A Review”
by De Luca, I.; Pedram, P.; Moeini, A.; Cerruti, P.; Peluso, G.; Di Salle, A. and Germann, N.
Appl. Sci. 2021, 11(4), 1713; https://doi.org/10.3390/app11041713
Available online: https://www.mdpi.com/2076-3417/11/4/1713

7. “Mechanical Properties of DNA Hydrogels: Towards Highly Programmable Biomaterials”
by Bush, J.; Hu, C. and Veneziano, R.
Appl. Sci. 2021, 11(4), 1885; https://doi.org/10.3390/app11041885
Available online: https://www.mdpi.com/2076-3417/11/4/1885

8. “Yttrium Oxide Nanoparticle Synthesis: An Overview of Methods of Preparation and Biomedical Applications”
by Rajakumar, G.; Mao, L.; Bao, T.; Wen, W.; Wang, S.; Gomathi, T.; Gnanasundaram, N.; Rebezov, M.; Shariati, M.; Chung, I.; Thiruvengadam, M. and Zhang, X.
Appl. Sci. 2021, 11(5), 2172; https://doi.org/10.3390/app11052172
Available online: https://www.mdpi.com/2076-3417/11/5/2172

9. “Enhancement of Antimicrobial Activity of Alginate Films with a Low Amount of Carbon Nanofibers (0.1% w/w)”
by Sanmartín-Santos, I.; Gandía-Llop, S.; Salesa, B.; Martí, M.; Lillelund Aachmann, F. and Serrano-Aroca, Á.
Appl. Sci. 2021, 11(5), 2311; https://doi.org/10.3390/app11052311
Available online: https://www.mdpi.com/2076-3417/11/5/2311

10. “Systematic Review on Human Skin-Compatible Wearable Photoplethysmography Sensors”
by Lee, I.; Park, N.; Lee, H.; Hwang, C.; Kim, J. and Park, S.
Appl. Sci. 2021, 11(5), 2313; https://doi.org/10.3390/app11052313
Available online: https://www.mdpi.com/2076-3417/11/5/2313

11. “Green Approaches to Carbon Nanostructure-Based Biomaterials”
by Adorinni, S.; Cringoli, M.; Perathoner, S.; Fornasiero, P. and Marchesan, S.
Appl. Sci. 2021, 11(6), 2490; https://doi.org/10.3390/app11062490
Available online: https://www.mdpi.com/2076-3417/11/6/2490

12. “Biogenic Nanoparticles: Synthesis, Characterisation and Applications”
by Mughal, B.; Zaidi, S.; Zhang, X. and Hassan, S.
Appl. Sci. 2021, 11(6), 2598; https://doi.org/10.3390/app11062598
Available online: https://www.mdpi.com/2076-3417/11/6/2598

13. “Electrospun PVP/PVA Nanofiber Mat as a Novel Potential Transdermal Drug-Delivery System for Buprenorphine: A Solution Needed for Pain Management”
by Rahmani, F.; Ziyadi, H.; Baghali, M.; Luo, H. and Ramakrishna, S.
Appl. Sci. 2021, 11(6), 2779; https://doi.org/10.3390/app11062779
Available online: https://www.mdpi.com/2076-3417/11/6/2779

14. “Tuning Single-Molecule Conductance by Controlled Electric Field-Induced trans-to-cis Isomerisation”
by Quintans, C.; Andrienko, D.; Domke, K.; Aravena, D.; Koo, S.; Díez-Pérez, I. and Aragonès, A.
Appl. Sci. 2021, 11(8), 3317; https://doi.org/10.3390/app11083317
Available online: https://www.mdpi.com/2076-3417/11/8/3317

15. “Surface Functionalization of PLGA Nanoparticles to Increase Transport across the BBB for Alzheimer’s Disease”
by Del Amo, L.; Cano, A.; Ettcheto, M.; Souto, E.; Espina, M.; Camins, A.; García, M. and Sánchez-López, E.
Appl. Sci. 2021, 11(9), 4305; https://doi.org/10.3390/app11094305
Available online: https://www.mdpi.com/2076-3417/11/9/4305

16. “Antibacterial Activity of TiO₂ Nanoparticles Prepared by One-Step Laser Ablation in Liquid”
by Khashan, K.; Sulaiman, G.; Abdulameer, F.; Albukhaty, S.; Ibrahem, M.; Al-Muhimeed, T. and AlObaid, A.
Appl. Sci. 2021, 11(10), 4623; https://doi.org/10.3390/app11104623
Available online: https://www.mdpi.com/2076-3417/11/10/4623

17. “Electrospun Nanofibrous Membranes for Tissue Engineering and Cell Growth”
by Tanzli, E. and Ehrmann, A.
Appl. Sci. 2021, 11(15), 6929; https://doi.org/10.3390/app11156929
Available online: https://www.mdpi.com/2076-3417/11/15/6929

18. “Nanotechnology, Nanomedicine, and the Kidney”
by Hauser, P.; Chang, H.; Yanagawa, N. and Hamon, M.
Appl. Sci. 2021, 11(16), 7187; https://doi.org/10.3390/app11167187
Available online: https://www.mdpi.com/2076-3417/11/16/7187

19. “Fe₃O₄ Nanoparticles: Structures, Synthesis, Magnetic Properties, Surface Functionalization, and Emerging Applications”
by Nguyen, M.; Tran, H.; Xu, S. and Lee, T.
Appl. Sci. 2021, 11(23), 11301; https://doi.org/10.3390/app112311301
Available online: https://www.mdpi.com/2076-3417/11/23/11301

20. “Copper Nanoparticles: Synthesis and Characterization, Physiology, Toxicity and Antimicrobial Applications”
by Crisan, M.; Teodora, M. and Lucian, M.
Appl. Sci. 2022, 12(1), 141; https://doi.org/10.3390/app12010141
Available online: https://www.mdpi.com/2076-3417/12/1/141