Publications & Works

Publication Network
Journal articles indexed in SCI, SSCI, and AHCI 36

1. Electret vibration energy harvesters with symmetrically configured curved-beam hinges

HAH D.
Microsystem Technologies , vol.30, no.3, pp.331-341, 2024 (SCI-Expanded) identifier

2. Hemispherical-shell-shaped organic photovoltaic cells for absorption enhancement and improved angular coverage

HAH D.
Journal of Photonics for Energy , vol.14, no.1, 2024 (SCI-Expanded) identifier

3. Analysis of electret-based vibration energy harvesting devices with curved-beam hinges

HAH D.
Journal of Intelligent Material Systems and Structures , vol.34, no.14, pp.1702-1712, 2023 (SCI-Expanded) identifier identifier

4. Respiration monitoring using a paper-based wearable humidity sensor, a step forward to clinical tests

Solak İ., Gençer S., Yıldırım B., Öznur E., HAH D., İÇÖZ K.
Sensors and Actuators A: Physical , vol.355, 2023 (SCI-Expanded) identifier

5. RF MEMS variable attenuators with improved dB-linearity

HAH D.
Microsystem Technologies , vol.29, no.3, pp.311-320, 2023 (SCI-Expanded) identifier

6. Shell-shaped active layers for omnidirectional organic photovoltaic cells

HAH D.
Journal of Photonics for Energy , vol.12, no.4, 2022 (SCI-Expanded) Sustainable Development identifier identifier

7. AIN Piezoelectric Quad-Actuators for 2D Optical Micro Scanning

HAH D.
INTEGRATED FERROELECTRICS , vol.225, no.1, pp.376-383, 2022 (SCI-Expanded) identifier identifier

8. Analysis of optical gyroscopes with vertically stacked ring resonators

HAH D.
TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES , vol.29, no.3, pp.1554-1564, 2021 (SCI-Expanded) Creative Commons License identifier identifier identifier

9. Absorption enhancement by semi-cylindrical-shell-shaped structures for an organic solar cell application

HAH D.
APPLIED OPTICS , vol.59, no.28, pp.8645-8652, 2020 (SCI-Expanded) Sustainable Development identifier identifier identifier

10. Linear variable optical attenuators with shaped-finger comb-drive actuators

HAH D.
APPLIED OPTICS , vol.59, no.2, pp.277-284, 2020 (SCI-Expanded) identifier identifier identifier

11. All-polymer ultrasonic transducer design for an intravascular ultrasonography application

HAH D.
TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES , vol.27, no.4, pp.2444-2455, 2019 (SCI-Expanded) identifier identifier

12. Analytical design of MEMS variable capacitors based on shaped-finger comb-drives

Hah D.
Microsystem Technologies , 2019 (SCI-Expanded) identifier

13. C-band optical filters with micromechanical tuning

Hah D.
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS , vol.24, pp.551-560, 2018 (SCI-Expanded) Creative Commons License identifier identifier

14. A design method of comb-drive actuators for linear tuning characteristics in mechanically tunable optical filters

Hah D.
Microsystem Technologies , vol.23, pp.3835-3842, 2017 (SCI-Expanded) identifier identifier

15. Clinical probe utilizing surface enhanced Raman scattering

Kim J., HAH D., Daniels-Race T., Feldman M.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B , vol.32, no.6, 2014 (SCI-Expanded) Creative Commons License identifier identifier

16. Note: Folded optical system for narrow forward looking probe

Hou H., Hah D., Kim J., Feldman M.
REVIEW OF SCIENTIFIC INSTRUMENTS , vol.85, no.2, 2014 (SCI-Expanded) Creative Commons License identifier identifier

17. Nanorough gold for enhanced Raman scattering

Kim J., Kang K., Sarkar A., Malempati P., Hah D., Daniels-Race T., et al.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B , vol.31, no.6, 2013 (SCI-Expanded) Creative Commons License identifier identifier

18. Electrophoretic Deposition of Carbon Nanotubes on Silicon Substrates

Sarkar A., Hah D.
JOURNAL OF ELECTRONIC MATERIALS , vol.41, no.11, pp.3130-3138, 2012 (SCI-Expanded) Creative Commons License identifier identifier

19. Combined soil moisture meter and penetrometer

Feldman M., Hah D., Hanifa K., Zhang Z.
Geotechnical Testing Journal , vol.35, no.3, pp.437-440, 2012 (SCI-Expanded) identifier identifier

20. Mechanically tunable optical filters with a microring resonator

Hah D., Bordelon J., Zhang D.
APPLIED OPTICS , vol.50, no.22, pp.4320-4327, 2011 (SCI-Expanded) identifier identifier

21. Analysis of resonant optical gyroscopes with two input/output waveguides

Hah D., Zhang D.
OPTICS EXPRESS , vol.18, no.17, pp.18200-18205, 2010 (SCI-Expanded) identifier identifier

22. Experimental characterization of two-axis MEMS scanners with hidden radial vertical combdrive actuators and cross-bar spring structures

Tsai J., Hsieh T., Liao C., Chiou S., Hah D., Wu M. C.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING , vol.19, no.4, 2009 (SCI-Expanded) Creative Commons License identifier identifier

23. Pre-shaped buckled-beam actuators: Theory and experiments

Park S., Hah D.
SENSORS AND ACTUATORS A-PHYSICAL , vol.148, no.1, pp.186-192, 2008 (SCI-Expanded) identifier identifier

24. Two-axis MEMS scanners with radial vertical combdrive actuators - design, theoretical analysis, and fabrication

Tsai J., Chiou S., Hsieh T., Sun C., Hah D., Wu M. C.
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS , vol.10, no.4, 2008 (SCI-Expanded) Creative Commons License identifier identifier

25. 1 x N-2 wavelength-selective switch with two cross-scanning one-axis analog micromirror arrays in a 4-f optical system

Tsai J., Huang S., Hah D., Wu M.
JOURNAL OF LIGHTWAVE TECHNOLOGY , vol.24, no.2, pp.897-903, 2006 (SCI-Expanded) identifier identifier

26. MEMS-actuated photonic crystal switches

Lee M., Hah D., Lau E., Toshiyoshi H., Wu M.
IEEE PHOTONICS TECHNOLOGY LETTERS , vol.18, pp.358-360, 2006 (SCI-Expanded) identifier identifier

27. Surface- and bulk-micromachined two-dimensional scanner driven by angular vertical comb actuators

Piyawattanametha W., Patterson P., Hah D., Toshiyoshi H., Wu M.
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS , vol.14, no.6, pp.1329-1338, 2005 (SCI-Expanded) Creative Commons License identifier identifier

28. A self-aligned vertical comb-drive actuator on an SOI wafer for a 2D scanning micromirror

Hah D., Choi C., Kim C., Jun C.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING , vol.14, no.8, pp.1148-1156, 2004 (SCI-Expanded) identifier identifier

29. Angular vertical comb-driven tunable capacitor with high-tuning capabilities

Nguyen H., Hah D., Patterson P., Chao R., Piyawattanametha W., Lau E., et al.
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS , vol.13, no.3, pp.406-413, 2004 (SCI-Expanded) identifier identifier

30. Theory and experiments of angular vertical comb-drive actuators for scanning micromirrors

Hah D., Patterson P., Nguyen H., Toshiyoshi H., Wu M.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS , vol.10, no.3, pp.505-513, 2004 (SCI-Expanded) identifier identifier

31. Low-voltage, large-scan angle MEMS analog micromirror arrays with hidden vertical comb-drive actuators

Hah D., Huang S., Tsai J., Toshiyoshi H., Wu M.
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS , vol.13, no.2, pp.279-289, 2004 (SCI-Expanded) identifier identifier

32. Open-loop operation of MEMS-based 1 X N wavelength-selective switch with long-term stability and repeatability

Tsai J., Huang S., Hah D., Toshiyoshi H., Wu M.
IEEE PHOTONICS TECHNOLOGY LETTERS , vol.16, no.4, pp.1041-1043, 2004 (SCI-Expanded) identifier identifier

33. A low voltage actuated microelectromechanical switch for RF application

Hah D., Yoon E., Hong S.
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS , vol.40, pp.2721-2724, 2001 (SCI-Expanded) identifier

34. A low-voltage actuated micromachined microwave switch using torsion springs and leverage

Hah D., Yoon E., Hong S.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES , vol.48, no.12, pp.2540-2545, 2000 (SCI-Expanded) identifier identifier

35. An optomechanical pressure sensor using multimode interference couplers with polymer waveguides on a thin p(+)-Si membrane

Hah D., Yoon E., Hong S.
SENSORS AND ACTUATORS A-PHYSICAL , vol.79, no.3, pp.204-210, 2000 (SCI-Expanded) identifier identifier

36. An optomechanical pressure sensor using multimode interference couplers

Hah D., Yoon E., Hong S.
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS , vol.38, pp.2664-2668, 1999 (SCI-Expanded) identifier identifier
Articles Published in Other Journals 2

1. Tapered curved-beam hinges for electret-based vibration energy harvesting devices

Hah D.
Engineering Research Express , vol.6, no.4, 2024 (ESCI) identifier

2. Flexible and Ecofriendly Keypad Based on Paper and Pencil

Er S. F., Kalabey N., HAH D.
IEEE Sensors Letters , vol.7, no.11, 2023 (ESCI) identifier
Papers Presented at Peer-Reviewed Scientific Conferences 45

1. Quasi-Static Operation of 2-Axis-Tilt Microscanners with AlN Piezoelectric Quad-Actuators

HAH D.
Symposium on Design, Test, Integration and Packaging of MEMS and MOEMS, Paris, France, 25 - 27 August 2021 identifier identifier

2. Effects of Curved-Beam Heights to Harvested Energy in a Blanaced Comb-Drive Configuration

HAH D.
Symposium on Design, Test, Integration and Packaging of MEMS and MOEMS, Paris, France, 25 - 27 August 2021 identifier identifier

3. Planar MEMS Variable Optical Attenuators (VOAs) with Linear Attenuation-Voltage Characteristics

HAH D.
2019 Symposium on Design, Test, Integration and Packaging of MEMS and MOEMS, DTIP 2019, Paris, France, 12 - 15 May 2019 identifier identifier

4. Analytical design of linear variable capacitors with shaped-finger comb-drive actuators

HAH D.
20th Symposium on Design, Test, Integration and Packaging of MEMS and MOEMS, DTIP 2018, Roma, Italy, 22 - 25 May 2018, pp.1-5 identifier

5. Design of capacitive micromachined ultrasonic transducers (CMUTs) on a flexible substrate for intravascular ultrasonography (IVUS) applications

HAH D., Je C. H., Lee S.
19th Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS, DTIP 2017, Bordeaux, France, 29 May - 01 June 2017 identifier identifier

6. An FEM study of die attach packaging effect on nanomechanical Si optical filters

Seok S., HAH D.
19th Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS, DTIP 2017, Bordeaux, France, 29 May - 01 June 2017 identifier identifier

7. Design of wide-band tunable optical filters with cascaded microring resonators and shaped-finger comb-drive actuators

HAH D.
18th Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS, DTIP 2016, Budapest, Hungary, 30 May - 02 June 2016, (Full Text) Creative Commons License identifier identifier

8. Design of mechanically tunable optical filters with microring resonators

HAH D., Bordelon J.
17th Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS, DTIP 2015, Montpellier, France, 27 - 30 April 2015, (Full Text) Creative Commons License identifier identifier

9. Performance Improvement of a Two-Axis Radial-Vertical-Combdrive Scanner by Using a Symmetric Spring Design

Hsieh T., Chang Y., Chiou S., Tsai J., Hah D., Wu M. C.
IEEE/LEOS International Conference on Optical MEMS and Nanophotonics, Freiburg, Germany, 11 - 14 August 2008, pp.108-109 identifier identifier

10. A two-axis MEMS scanner driven by radial vertical combdrive actuators

Chiou S., Hsieh T., Tsai J., Sun C., Hah D., Wu M. C.
IEEE/LEOS International Conference on Optical MEMS and Nanophotonics, Hualian, Taiwan, 12 - 16 August 2007, pp.83-84 identifier identifier

11. Silicon-based on-chip micromirrors for DWDM wavelength-selective crossconnects

Chi C., Hou C., Lee C., HAH D., Wu M. C.
IEEE/LEOS International Conference on Optical MEMS and Their Applications Conference, 2006, Big Sky, MT, United States Of America, 21 - 24 August 2006, pp.130-131 identifier

12. Integrated 1x4 wavelength-selective switch with on-chip MEMS micromirrors

Chi C., Tsai J., Lee M. M., HAH D., Wu M. C.
Conference on Lasers and Electro-Optics, CLEO 2006, Long Beach, CA, United States Of America, 21 May 2006 identifier

13. Silicon-based monolithic 4x4 wavelength-selective cross connect with on-chip micromirrors

Chi C., Tsai J., Hah D., Mathai S., Lee M. M., Wu M. C.
Conference on Optical Fiber Communications/National Fiber Optic Engineers Conference, California, United States Of America, 5 - 10 March 2006, pp.91-92 identifier

14. Solid-immersion micromirror with enhanced angular deflection for silicon-based planar lightwave circuits

Chi C., Tsai J., Hah D., Jeong K., Wu M.
10th IEEE/LEOS International Conference on Optical MEMs and Their Applications, Oulu, Finland, 1 - 04 August 2005, pp.131-132 identifier identifier

15. A large port-count 1x32 wavelength-selective switch using a large scan-angle, high fill-factor, two-axis analog micromirror array

Tsai J., Fan L., Chi C., HAH D., Wu M. C.
30th European Conference on Optical Communication, Stockholm, Sweden, 5 - 09 September 2004, pp.1-2

16. A high fill-factor, large scan-angle, two-axis analog micromirror array driven by leverage mechanism

Tsai J., Fan L., HAH D., Wu M. C.
International Conference on Optical MEMS and Their Applications, Takamatsu, Japan, 22 - 26 August 2004, pp.30-31

17. Scanning micromirrors: An overview

Patterson P., Hah D., Fujino M., Piyawattanametha W., Wu M.
Conference on Optomechatronic Micro/Nano Components, Devices and Systems, Pennsylvania, United States Of America, 27 - 28 October 2004, vol.5604, pp.195-207, (Full Text) identifier identifier

18. A Surface and Bulk Micromachined Angular Vertical Combdrive for Scanning Micromirrors

Piyawattanametha W., Patterson P., Wu M., HAH D., Toshiyoshi H.
Optical Fiber Communication Conference (OFC), Atlanta, United States Of America, vol.86, pp.251-252 identifier identifier

19. Wavelength-selective 1xN2 switches with two-dimensional input/output fiber arrays

Tsai J., Huang S., HAH D., Wu M. C.
CLEO 2003, Baltimore, United States Of America, 1 - 06 June 2003, pp.772-774

20. MOEM scanners for optical networks

HAH D., Choi C., Jun C., Kim Y., Patterson P., Toshiyoshi H., et al.
The 9th KIEE MEMS symposium, Seoul, South Korea, 06 February 2003, pp.13-19

21. Nano-electro-mechanical photonic crystal switches

Lee M., HAH D., Lau E., Toshiyoshi H., Wu M. C.
6th International Symposium on Contemporary Photonics Technology (CPT 2003), Tokyo, Japan, 15 - 17 January 2003, pp.135-138

22. A self-aligned vertical comb-drive actuator using surface micromachining for scanning micromirrors

Hah D., Choi C., Jun C., Kim Y.
IEEE/LEOS International Conference on Optical MEMS, Hawaii, United States Of America, 18 - 21 August 2003, pp.151-152 identifier identifier

23. Wavelength-selective 1×N2 switches with two-dimensional input/output fiber arrays

Tsai J., Huang S., HAH D., Wu M. C.
Conference on Lasers and Electro-Optics (CLEO); Postconference Digest, Baltimore, MD, United States Of America, 1 - 06 June 2003, vol.88, pp.775-777, (Full Text) identifier

24. A 2D scanner by surface and bulk micromachined angular vertical comb actuators

Piyawattanametha W., Patterson P., Hah D., Toshiyoshi H., Wu M.
IEEE/LEOS International Conference on Optical MEMS, Hawaii, United States Of America, 18 - 21 August 2003, pp.93-94 identifier identifier

25. 1xN(2) wavelength-selective switch with telescope-magnified 2D input/output fiber collimator array

Tsai J., Huang S., Hah D., Wu M.
IEEE/LEOS International Conference on Optical MEMS, Hawaii, United States Of America, 18 - 21 August 2003, pp.45-46 identifier

26. Analog micromirror arrays with orthogonal scanning directions for wavelength-selective 1XN(2) switches

Tsai J., Huang S., Hah D., Wu M.
12th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS 03), Massachusetts, United States Of America, 8 - 12 June 2003, pp.1776-1779 identifier

27. MEMS photonic devices and their applications

Wu M., HAH D., Huang S., Tsai J.
7th Optoelectronics and communications conference (OECC 2002), Yokohama, Japan, 8 - 12 July 2002, pp.38-39

28. Low voltage MEMS micromirror arrays with hidden vertical comb-drive actuators

HAH D., Huang S., Nguyen H., Chang H., Tsai J., Toshiyoshi H., et al.
Hilton Head 2002 Solid-State Sensor & Actuator Workshop, Hilton Head Island, United States Of America, 3 - 06 June 2002, pp.11-14

29. A novel tunable MEMS capacitor based on angled vertical comb drive actuators

Nguyen H., HAH D., Patterson P., Chao R., Piyawattanametha W., Wu M. C.
Hilton Head 2002 Solid-State Sensor & Actuator Workshop, Hilton Head Island, United States Of America, 3 - 06 June 2002, pp.277-280

30. Advanced MEMS for photonics

Wu M., Patterson P., HAH D., Lee M., Huang S., Tsai J.
60th Device Research Conference, DRC 2002, California, United States Of America, 24 - 26 June 2002, vol.2002-January, pp.13-16, (Full Text) identifier

31. A Low Voltage, Large Scan Angle MEMS Micromirror Array with Hidden Vertical Comb-Drive Actuators for WDM Routers

HAH D., Huang S., Nguyen H., Chang H., Wu M. C., Toshiyoshi H.
Optical Fiber Communication Conference, OFC 2002, California, United States Of America, 17 March 2002, pp.92-93 identifier identifier

32. MEMS WDM routers using analog micromirror arrays

Wu M., Tsai J., Huang S., Hah D.
15th Annual Meeting of the IEEE-Lasers-and-Electro-Optics-Society, Glasgow, England, 10 - 14 November 2002, pp.582-583 identifier identifier

33. A scanning micromirror with angular comb drive actuation

Patterson P., Hah D., Nguyen H., Toshiyoshi H., Chao R., Wu M.
15th IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2002), Nevada, United States Of America, 20 - 24 January 2002, pp.544-547, (Full Text) identifier identifier

34. Design of electrostatic actuators for MOEMS applications

Hah D., Toshiyoshi H., Wu M.
Conference on Design, Test, Integration, and Packaging of MEMS/MOEMS 2002, Cannes, France, 6 - 08 May 2002, vol.4755, pp.200-207, (Full Text) identifier identifier

35. Open-loop operation of MEMS WDM routers with analog micromirror array

Huang S., Tsai J., Hah D., Toshiyoshi H., Wu M.
IEEE/LEOS International Conference on Optical MEMS, LUGANO, Switzerland, 20 - 23 August 2002, pp.179-180 identifier identifier

36. Microelectromechanical scanning devices for optical networking applications

Wu M. C., HAH D., Patterson P. R., Toshiyoshi H.
2002 IEEE International Solid-State Circuits Conference, San Francisco, CA, United States Of America, 3 - 07 February 2002, pp.288 identifier identifier

37. Recent advances in optical MEMS devices and systems

Patterson P., Hah D., Lee M., Tsai J., Wu M.
Conference on Photonic Devices and Algorithms for Computing IV, Washington, United States Of America, 8 - 09 July 2002, vol.4788, pp.1-8 identifier identifier

38. MOEMS electrostatic scanning micromirrors design and fabrication

Patterson P., Hah D., Su G., Toshiyoshi H., Wu M.
1st International Symposium on Integrated Electronics, Pennsylvania, United States Of America, 12 - 17 May 2002, vol.2002, pp.369-380 identifier

39. Integration of a honeycomb micromirror with a surface micromachined 2D scanner for improved performance

Patterson P., Su G., HAH D., Wu M. C.
AVS 48th International Symposium, San Francisco, United States Of America, 29 October - 02 November 2001, pp.1

40. An angular vertical comb drive actuator for scanning micromirrors

Patterson P., HAH D., Chang H., Toshiyoshi H., Wu M. C.
International Conference on Optical MEMS and Their Applications, Okinawa, Japan, 25 - 28 September 2001, pp.25-26

41. Low voltage actuated RF MEMS switches using push-pull operation

HAH D., Yoon E., Hong S.
International Conference on Solid State Devices and Materials, Sendai, Japan, 28 - 31 August 2000, pp.392-393

42. Surface micromachined microwave switch with push-pull configuration

HAH D., Yoon E., Hong S.
The 2nd Korean MEMS Conference, Daejeon, South Korea, 07 April 2000, pp.263-268

43. A low voltage actuated micromachined microwave switch using torsion springs and leverage

Hah D., Yoon E., Hong S.
IEEE MTT-S International Microwave Symposium (IMS2000), Massachusetts, United States Of America, 11 - 16 June 2000, pp.157-160 identifier

44. Optomechanical pressure sensors using multi-mode interference couplers on thin p+-Si membranes

HAH D., Yoon E., Hong S.
The 6th Korean Conference on Semiconductor, Seoul, South Korea, 01 February 1999, pp.175-176

45. Optical coupler sensor with movable waveguide

HAH D., Hong S., Kwon Y.
The 3rd Korean Conference on Semiconductor, Jeongju, South Korea, 5 - 06 February 1996, pp.457-458
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Publication

84

Publication (WoS)

54

Publication (Scopus)

63

Citation (WoS)

905

H-Index (WoS)

10

Citation (Scopus)

1278

H-Index (Scopus)

18

Citation (Scholar)

2165

H-Index (Scholar)

24

Project

9

Intellectual Property

9

Thesis Advisory

6
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