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Showing 1 to 12 of 24 entries
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A 380pW Dual Mode Optical Wake-up Receiver with Ambient Noise Cancellation.

Symposium on VLSI Circuits : [proceedings]. Symposium on VLSI Circuits

Lim W, Jang T, Lee I, Kim HS, Sylvester D, Blaauw D.
PMID: 28392978
Symp VLSI Circuits. 2016 Jun;2016. doi: 10.1109/VLSIC.2016.7573481. Epub 2016 Sep 22.

We present a sub-nW optical wake-up receiver for wireless sensor nodes. The wake-up receiver supports dual mode operation for both ultra-low standby power and high data rates, while canceling ambient in-band noise. In 0.18µm CMOS the receiver consumes 380pW...

A 5.8nW, 45ppm/°C On-Chip CMOS Wake-up Timer Using a Constant Charge Subtraction Scheme.

Proceedings of the ... Custom Integrated Circuits Conference. Custom Integrated Circuits Conference

Jeong S, Lee I, Blaauw D, Sylvester D.
PMID: 26778895
Proc Cust Integr Circuits Conf. 2014 Sep;2014. doi: 10.1109/CICC.2014.6946008.

This work presents an ultra-low power oscillator designed for wake-up timers in compact wireless sensors. A constant charge subtraction scheme removes continuous comparator delay from the oscillation period, which is the source of temperature dependence in conventional RC relaxation...

A 60%-Efficiency 20nW-500µW Tri-Output Fully Integrated Power Management Unit with Environmental Adaptation and Load-Proportional Biasing for IoT Systems.

Digest of technical papers. IEEE International Solid-State Circuits Conference

Jung W, Gu J, Myers PD, Shim M, Jeong S, Yang K, Choi M, Foo Z, Bang S, Oh S, Sylvester D, Blaauw D.
PMID: 27546940
Dig Tech Pap IEEE Int Solid State Circuits Conf. 2016 Jan-Feb;2016:154-155. doi: 10.1109/ISSCC.2016.7417953.

No abstract available.

A >78%-Efficient Light Harvester over 100-to-100klux with Reconfigurable PV-Cell Network and MPPT Circuit.

Digest of technical papers. IEEE International Solid-State Circuits Conference

Lee I, Lim W, Teran A, Phillips J, Sylvester D, Blaauw D.
PMID: 27546942
Dig Tech Pap IEEE Int Solid State Circuits Conf. 2016 Jan-Feb;2016:370-371. doi: 10.1109/ISSCC.2016.7418061.

No abstract available.

MBus: An Ultra-Low Power Interconnect Bus for Next Generation Nanopower Systems.

Proceedings. International Symposium on Computer Architecture

Pannuto P, Lee Y, Kuo YS, Foo Z, Kempke B, Kim G, Dreslinski RG, Blaauw D, Dutta P.
PMID: 26855555
Proc Int Symp Comput Archit. 2015 Jun;2015:629-641. doi: 10.1145/2749469.2750376.

As we show in this paper, I/O has become the limiting factor in scaling down size and power toward the goal of invisible computing. Achieving this goal will require composing optimized and specialized-yet reusable-components with an interconnect that permits...

27.6. A 0.7pF-to-10nF Fully Digital Capacitance-to-Digital Converter Using Iterative Delay-Chain Discharge.

IEEE journal of solid-state circuits

Jung W, Jeong S, Oh S, Sylvester D, Blaauw D.
PMID: 26279586
IEEE J Solid-State Circuits. 2015 Feb;2015. doi: 10.1109/ISSCC.2015.7063137.

No abstract available.

Infrared Energy Harvesting in Millimeter-Scale GaAs Photovoltaics.

IEEE transactions on electron devices

Moon E, Blaauw D, Phillips JD.
PMID: 29129936
IEEE Trans Electron Devices. 2017 Nov;64(11):4554-4560. doi: 10.1109/TED.2017.2746094. Epub 2017 Sep 06.

The design and characterization of mm-scale GaAs photovoltaic cells are presented and demonstrate highly efficient energy harvesting in the near infrared. Device performance is improved dramatically by optimization of the device structure for the near-infrared spectral region and improving...

A 4.7nW 13ppm/°C Self-Biased Wakeup Timer Using a Switched-Resistor Scheme.

Digest of technical papers. IEEE International Solid-State Circuits Conference

Jang T, Choi M, Jeong S, Bang S, Sylvester D, Blaauw D.
PMID: 27546939
Dig Tech Pap IEEE Int Solid State Circuits Conf. 2016 Jan-Feb;2016:102-103. doi: 10.1109/ISSCC.2016.7417927.

No abstract available.

Three-dimensional tumor model mimics stromal - breast cancer cells signaling.

Oncotarget

Ham SL, Thakuri PS, Plaster M, Li J, Luker KE, Luker GD, Tavana H.
PMID: 29416611
Oncotarget. 2017 Dec 05;9(1):249-267. doi: 10.18632/oncotarget.22922. eCollection 2018 Jan 02.

Tumor stroma is a major contributor to the biological aggressiveness of cancer cells. Cancer cells induce activation of normal fibroblasts to carcinoma-associated fibroblasts (CAFs), which promote survival, proliferation, metastasis, and drug resistance of cancer cells. A better understanding of...

The effect of doping on low temperature growth of high quality GaAs nanowires on polycrystalline films.

Nanotechnology

DeJarld M, Teran A, Luengo-Kovac M, Yan L, Moon ES, Beck S, Guillen C, Sih V, Phillips J, Milunchick JM.
PMID: 27834310
Nanotechnology. 2016 Dec 09;27(49):495605. doi: 10.1088/0957-4484/27/49/495605. Epub 2016 Nov 11.

The increasing demand for miniature autonomous sensors requires low cost integration methods, but to date, material limitations have prevented the direct growth of optically active III-V materials on CMOS devices. We report on the deposition of GaAs nanowires on...

High-Efficiency Photovoltaic Modules on a Chip for Millimeter-Scale Energy Harvesting.

Progress in photovoltaics

Moon E, Lee I, Blaauw D, Phillips JD.
PMID: 34354330
Prog Photovolt. 2019 Jun;27(6):540-546. doi: 10.1002/pip.3132. Epub 2019 Mar 28.

Photovoltaic modules at the mm-scale are demonstrated in this work to power wirelessly interconnected mm-scale sensor systems operating under low flux conditions, enabling applications in the Internet of Things and biological sensors. Module efficiency is found to be limited...

A 120nW 8b Sub-ranging SAR ADC with Signal-Dependent Charge Recycling for Biomedical Applications.

Symposium on VLSI Circuits : [proceedings]. Symposium on VLSI Circuits

Jeong S, Jung W, Jeon D, Berenfeld O, Oral H, Kruger G, Blaauw D, Sylvester D.
PMID: 26855850
Symp VLSI Circuits. 2015 Jun;2015:C60-C61. doi: 10.1109/VLSIC.2015.7231327.

We present an 8-bit sub-ranging SAR ADC designed for bursty signals having long time periods with small code spread. A modified capacitive-DAC (CDAC) saves previous sample's MSB voltage and reuses it throughout subsequent conversions. This prevents unnecessary switching of...

Showing 1 to 12 of 24 entries