REFERENCES

1. Wang, C.; Chen, X.; Wang, L.; et al. Bioadhesive ultrasound for long-term continuous imaging of diverse organs. Science 2022, 377, 517-23.

2. Zhai, R.; Pan, Z.; Kou, Y.; et al. Multi-frequency dual-echo magnetic resonance imaging for real-time and artifact-free magnetic robot navigation. Engineering 2026, 57, 189-99.

3. Dan, Q.; Jiang, X.; Wang, R.; Dai, Z.; Sun, D. Biogenic imaging contrast agents. Adv. Sci. 2023, 10, 2207090.

4. Lin, M.; Zhang, Z.; Gao, X.; et al. A fully integrated wearable ultrasound system to monitor deep tissues in moving subjects. Nat. Biotechnol. 2023, 42, 448-57.

5. Hu, H.; Ma, Y.; Gao, X.; et al. Stretchable ultrasonic arrays for the three-dimensional mapping of the modulus of deep tissue. Nat. Biomed. Eng. 2023, 7, 1321-34.

6. Wang, C.; Li, X.; Hu, H.; et al. Monitoring of the central blood pressure waveform via a conformal ultrasonic device. Nat. Biomed. Eng. 2018, 2, 687-95.

7. Han, H.; Ma, X.; Deng, W.; et al. Imaging-guided bioresorbable acoustic hydrogel microrobots. Sci. Robot. 2024, 9, eadp3593.

8. Tong, X.; Liu, C. Z.; Luo, Y.; et al. Panoramic photoacoustic computed tomography with learning-based classification enhances breast lesion characterization. Nat. Biomed. Eng. 2025, 10, 161-77.

9. Zhang, Q.; Liang, X.; Zhang, Y.; Nie, H.; Chen, Z. A review of contrast-enhanced ultrasound using SonoVue® and SonazoidTM in non-hepatic organs. Eur. J. Radiol. 2023, 167, 111060.

10. Marsico, M.; Gabbani, T.; Casseri, T.; Biagini, M. R. Factors predictive of improved abdominal ultrasound visualization after oral administration of simethicone. Ultrasound. Med. Biol. 2016, 42, 2532-7.

11. Liu, J.; Liu, N.; Xu, Y.; et al. Bioresorbable shape-adaptive structures for ultrasonic monitoring of deep-tissue homeostasis. Science 2024, 383, 1096-103.

12. Li, Z.; Yang, D.; Liu, S.; et al. Broadband gradient impedance matching using an acoustic metamaterial for ultrasonic transducers. Sci. Rep. 2017, 7, 42863.

13. Ma, G.; Sheng, P. Acoustic metamaterials: from local resonances to broad horizons. Sci. Adv. 2016, 2, e1501595.

14. Cummer, S. A.; Christensen, J.; Alù, A. Controlling sound with acoustic metamaterials. Nat. Rev. Mater. 2016, 1, 16001.

15. Lemoult, F.; Fink, M.; Lerosey, G. Acoustic resonators for far-field control of sound on a subwavelength scale. Phys. Rev. Lett. 2011, 107, 064301.

16. Lemoult, F.; Kaina, N.; Fink, M.; Lerosey, G. Wave propagation control at the deep subwavelength scale in metamaterials. Nat. Phys. 2012, 9, 55-60.

17. Boccaccio, M.; Rachiglia, P.; Malfense Fierro, G. P.; Pio Pucillo, G.; Meo, M. Deep-subwavelength-optimized holey-structured metamaterial lens for nonlinear air-coupled ultrasonic imaging. Sensors 2021, 21, 1170.

18. Zhang, M.; Jin, B.; Hua, Y.; et al. Reconfigurable dynamic acoustic holography with acoustically transparent and programmable metamaterial. Nat. Commun. 2025, 16, 9126.

19. Jia, Y.; Zhang, S.; Zhang, X.; et al. Compact meta-differentiator for achieving isotropically high-contrast ultrasonic imaging. Nat. Commun. 2024, 15, 2934.

20. Zhou, Y.; Zheng, H.; Kravchenko, I. I.; Valentine, J. Flat optics for image differentiation. Nat. Photonics. 2020, 14, 316-23.

21. Mei, J.; Ma, G.; Yang, M.; Yang, Z.; Wen, W.; Sheng, P. Dark acoustic metamaterials as super absorbers for low-frequency sound. Nat. Commun. 2012, 3, 756.

22. Ma, G.; Yang, M.; Xiao, S.; Yang, Z.; Sheng, P. Acoustic metasurface with hybrid resonances. Nat. Mater. 2014, 13, 873-8.

23. Yang, M.; Chen, S.; Fu, C.; Sheng, P. Optimal sound-absorbing structures. Mater. Horiz. 2017, 4, 673-80.

24. Zhang, K.; Ma, C.; He, Q.; et al. Metagel with broadband tunable acoustic properties over air-water-solid ranges. Adv. Funct. Mater. 2019, 29, 1903699.

25. Dong, E.; Song, Z.; Zhang, Y.; et al. Bioinspired metagel with broadband tunable impedance matching. Sci. Adv. 2020, 6, eabb3641.

26. Tian, Y.; Yang, Y.; Wang, J.; et al. Biodegradable ultrasound contrast tape for tracing intestinal motility. Nat. Commun. 2025, 16, 7910.

27. Zhang, J.; Zhou, N.; Dong, E.; et al. Soft bio-metamaterials with high acoustic transparency and gradient refractive index for tunable acoustic beamformer. Matter 2024, 7, 3857-75.

28. Jin, Y.; Kumar, R.; Poncelet, O.; Mondain-monval, O.; Brunet, T. Flat acoustics with soft gradient-index metasurfaces. Nat. Commun. 2019, 10, 143.

29. Chen, Q.; Zhang, B.; Bai, Y.; Wang, L.; Rejab, M. R. M. Review of Phononic crystals and acoustic metamaterials. IOP. Conf. Ser. Mater. Sci. Eng. 2020, 788, 012052.

30. Yuk, H.; Varela, C. E.; Nabzdyk, C. S.; et al. Dry double-sided tape for adhesion of wet tissues and devices. Nature 2019, 575, 169-74.

Soft Science
ISSN 2769-5441 (Online)

Portico

All published articles are preserved here permanently:

https://www.portico.org/publishers/oae/

Portico

All published articles are preserved here permanently:

https://www.portico.org/publishers/oae/